DK175575B1 - Benzodiazepinforbindelse og farmaceutisk præparat indeholdende en sådan forbindelse - Google Patents
Benzodiazepinforbindelse og farmaceutisk præparat indeholdende en sådan forbindelse Download PDFInfo
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- DK175575B1 DK175575B1 DK198801395A DK139588A DK175575B1 DK 175575 B1 DK175575 B1 DK 175575B1 DK 198801395 A DK198801395 A DK 198801395A DK 139588 A DK139588 A DK 139588A DK 175575 B1 DK175575 B1 DK 175575B1
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Classifications
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Description
DK 175575 B1
Opfindelsen angår en hidtil ukendt antagonist for gastrin og cholecystokininer (CCK) med formel I og dens anvendelse.
Udgangsmaterialer for forbindelser med formlen I som angivet i det følgende 5 er beskrevet i US patentansøgning nr. 942 131, indleveret 16. december 1986, som er en CIP af ansøgning nr. 624 853, indleveret 26. juni 1984, der nu er faldet, med benævnelsen "Acylaminophenylketones and Amines", hvortil der henvises.
10 Den foreliggende ansøgning er baseret på en CIP af US patentansøgning nr.
741 972, indleveret 10. juni 1985, som er en CIP af ansøgning nr. 705 272, indleveret 25. februar 1985 og nu bortfaldet, hvilken ansøgning igen er en CIP af ansøgning nr. 624 854, der blev indleveret 26. juni 1984, og som nu er bortfaldet.
15
Cholecystokininer (CCK) og gastrin er strukturelt relaterede neuropeptider, som eksisterer i gastrointestinalt væv og i det centrale nervesystem (se V.
Mutt, Gastrointestinal Hormones, G.B.J. Glass, udg., Raven Press, N.Y., p.
169 og G. Nisson, ibid, p. 127).
20
Cholecystokinier omfatter CCK-33, et neuropeptid med 33 aminosyrer i den oprindeligt isolerede form (se Mutt og Jorpes, Biochem. J. 125, 678 (1971)), de carboxylterminale octapeptid deraf, CCK-8 (også et naturligt forekommende neuropeptid, og den minimale fuldt aktive sekvens), og 39- og 12-25 aminosyre formerne, mens gastrin forekommer i 34-, 17- og 14-aminosyre former, hvor den minimale aktive sekvens er det C-terminale pentapeptid, Gly-Trp-Met-Asp-Phe-NH2, som er det fælles strukturelle element, der indgår i såvel CCK som gastrin.
30 CCK’er menes at være fysiologiske mæthedshormoner, der således muligvis spiller en vigtig rolle i appetitregulering (G.P. Smith, Eating and Its Disorders, A.J. Stunkard og E. Stellar, udg., Raven Press, New York, 1984, p. 67) såvel som stimulerende colonmotilitet, galdeblærekontraktion, pancreatisk enzym DK 175575 B1 2 sekretion og inhiberende mavetømning. De er rapporteret som eksisterende sammen med dopamin i visse midt-hjerne neuroner og kan således også spille en rolle ved driften af dopaminerge systemer i hjernen foruden at tjene som neurotransmittere i sig selv (se A.J. Prange et al., ''Peptides in the Cen-5 tral Nervous System", Ann. Repts. Med. Chem. 17, 31, 33 [1982] og deri citerede referencer, J.A. Williams, Biomed. Res. 3 107 [1982] og J.E. Morley,
Life Sci. 30, 479, [1982]).
Gastrins primære rolle synes på den anden side at være stimulering af sekre-10 tionen af vand og elektrolytter fra maven og er som sådan involveret i kontrollen med mavesyre og pepsinsekretion. Andre fysiologiske virkninger af gastrin omfatter så forøget mucosal blodstrøm og forøget antral motilitet, hvor rottestudier har vist, at gastrin har en positiv trophisk virkning på maveslim-hinden som sandsynliggjort ved forøget DNA, RNA og proteinsyntese.
15
Antagonister mod CCK og mod gastrin har været nyttige til forhindring af og behandling af CCK-relaterede og/elier gastrin-relaterede lidelser i mave-tarm-kanalen (GI) og det centrale nervesystem (CNS) i dyr, specielt mennesker.
Netop fordi der er nogen overlapning i de biologiske aktiviteter for CCK og 20 gastrin, har antagonister også en tendens til at have affinitet over for begge receptorer. I praksis er der imidlertid tilstrækkelig selektivitet til de forskellige receptorer til, at større aktivitet over for specifikke CCK- eller gastrinrelaterede lidelser ofte også kan identificeres.
25 Selektive CCK-antagonister er i sig selv nyttige til behandling af CCK-relaterede lidelser i appetitreguleringssystemerne hos dyr såvel som til at styrke og forlænge opiat-medieret analgesi, hvorved de har nytte i behandlingen af smerte [se P.L. Faris et al., Science 226, 1215 (1984)], mens selektive gastrin antagonister er nyttige i modulationen af CNS-opførslen 30 som palliativ for gastrointestinale neoplasma og i behandlingen og forhindringen af gastrin-relaterede lidelser i mave-tarm-kanalsystemet hos mennesker og dyr, såsom mavesår, Zollinger-Ellison syndrom, antal G celle- DK 175575 B1 3 hyperplasia og andre tilstande, ved hvilke reduceret gastrin-aktivitet er af terapeutisk værdi.
Da CCK og gastrin også har trophiske virkninger på visse tumorer [K. Ok-5 yama, Hokkaido J. Med. Sci., 60, 206-216 (1985)] er antagonister for CCK og gastrin også nyttige til behandling af sådanne tumorer (se R.D. Beauchamp et al., Ann. Surg., 202,303 (1985)].
Der er blevet rapporteret fire forskellige kemiske klasser CCK-receptor an-10 tagonister. Den første klasse omfatter derivater af cycliske nucleotider, af hvilke dibutyryl-cyclisk GMP har vist sig at være den kraftigste ved detaljerede strukturfunktionsstudier (se, N. Barlos et al., Am. J. Physiol., 242, G 161 (1982) og P. Robberrecht et al., Mol., Pharmacol., 1_7> 268 (1980)).
15 Den anden klasse omfatter peptid antagonister, som er C-terminale fragmenter og analoge med CCK, af hvilke både kortere (Boc-Met-Asp-Phe-NH2, Met-Asp-Phe-NH2), og længere (Cbz-Tyr(S03H)-Met-Gly-Trp-Met-Asp-NH2) C-terminale fragmenter af CCK kan virke som CCK-antagonister, ifølge nylige strukturfunktionsstudier (se R.T. Jensen et al., Biochem. Biophys.
20 Acta., 757, 250 (1983) og M. Spanarkel et al., J. Biol. Chem., 258, 6746 (1983) ). Sidstnævnte forbindelse er fornylig blevet rapporteret som værende en delvis agonist [se J.M. Howard et al., Gastroenterology 86(5), del 2, 1118 (1984) ].
25 Den tredie klasse af CCK-receptor antagonister omfatter aminosyre derivaterne: proglumid, et derivat af glutaramsyre, N-acyl tryptophaner, herunder para-chlorbenzoyl-L-tryptophan (benzotript), [se W.F. Hahne et al., Proc.
Natl. Acad. Sci. U.S.A., 78, 6304 (1981), R.T. Jensen et al., Biochem. Biophys. Acta., 761, 269 (1983)]. Alle disse forbindelser er imidlertid ret svage 30 antagonister for CCK (IC50: generelt 10'4 M [skønt kraftigere analoge af proglumid fornylig er blevet rapporteret i F. Makovec et al., Arzneim-Forsch Drug Res., 35 (II), 1048 (1985) og i tysk patentansøgning nr. DE 3522506AI], men DK 175575 B1 4 ned til 10'6 M i tilfælde af peptider), og peptid-CCK-antagonisterne har væsentlig stabilitets- og absorptionsproblemer.
En fjerde klasse består af forbedrede CCK-antagonister omfattende et ikke-5 peptid med hidtil ukendt struktur fra fermenteringskilder [R.S.L. Chang et al., Science, 230, 177-179 (1985)], og 3-substituerede benzodiazepiner baseret på denne struktur [publiserede Europa patentansøgning nr. 167 919, 167 920 og 169 392, B E. Evans et al., Proc. Natl. Acad. Sci. U.S.A., 83, p. 4918-4922 (1986) og R.S.L. Chang et af., ibid, p. 4923-4926] er også blevet rapporteret.
10
Der er ikke blevet rapporteret nogen virkelig effektive receptor-antagonister for in vivo virkningerne af gastrin (J.S. Morley, Gut Pept. Ulcer Proc., Hiroshima Symp. 2, 1983, p. 1) og meget svage in vitro antagonister, såsom proglumid og visse peptider, er blevet beskrevet [(J. Martinez, J. Med. Chem.
15 27, 1597 (1984)]. Fornylig er der imidlertid rapporteret pseudopeptid-analoge af tetragastrin som værende mere effektive gastrin-antagonister end tidligere midler [J. Martinez et al., J. Med. Chem., 28, 1874-1879 (1985)].
Klassen af forbindelser med benzodiazepinstruktur (BZD) er blevet udnyttet 20 indgående som terapeutiske midler, specielt som lægemidler til brug i forbindelse med det centrale nervesystem (CNS), såsom anxiolytika, og som udviser stærk binding til "benzodiazepin receptorer" in vitro er ikke i det forløbende blevet rapporteret som bindende til CCK- eller gastrin-receptorer.
Man har vist, at benzodiazepiner antagoniserer CCK-induceret aktivering af 25 rotte hippocampale neuroner, men denne virkning medieres af benzodiazepin receptoren, ikke CCK-receptoren [se J. Bradwejn et al., Nature, 312, 363 (1984)]. Af disse rapporterede BZD'er indeholder størstedelen ingen substituenter knyttet til 3-stillingen i den 7-leddede ring, da det er velkendt i teknikken, at 3-substituenter resulterer i nedsat anxiolytisk aktivitet, specielt 30 når disse substituenter forøges i størrelse.
DK 175575 B1 5 PA 1985 02872 angår anvendelsen af et benzodiazepinderivat til fremstilling af et lægemiddel til anvendelse til at antagonisere cholecystokinin i gastro-intestiral væv og til at antagonisere gastrin, samt benzodiazepinderivater.
5 Det tilsigtigedes derfor med den foreliggende opfindelse at identificere stoffer, som mere effektivt antagoniserer virkningen af cholecystokininer og gastrin i sygdomstilstande hos dyr, foretrukkent pattedyr, specielt mennesker.
Den foreliggende opfindelse angår hidtil ukendte forbindelser, som mere selektivt inhiberer. cholecystokininer eller inhiberer gastrin. Der tilvejerbinges 10 herved præparater til at antagonisere virkningerne af cholecystokinin og gastrin i sygdomstilstande hos pattedyr, bl.a. til at forhindre eller behandle sygdomstilstande eller lidelser i mave-tarm-kanalen, det centrale nervesystem og det appetitregulerende system hos pattedyr, specielt mennesker, eller til at forøge fødeindtagelsen hos dyr.
15
Det har vist sig, at forbindelserne med formlen I er antagonister for gastrin og cholecystokinin (CCK), og at de binder til gastrin- og CCK-receptorer. Disse forbindelser er nyttige ved behandlingen og forhindringen af CCK-relaterede sygdomme i mave-tarm-kanalen, det centrale nervesystem og det appeti-20 tregulerende system hos dyr, fordrukkent pattedyr og specielt mennesker. De er ogsånyttige ved behandlingen og forhindringen af gastrin- relaterede sygdomme, sår i mave-tarm-kanalen, Zollinger-Ellison syndrom, antral G celle-hyperplasia og andre tilstande, i hvilke reduceret gastrin-aktivitet er af terapeutisk betydning.
25
Opfindelsen angår således forbindelsen med formlen I, V o o P~CH‘ (1) (X H " DK 175575 B1 6 dens enantiomerer og de farmaceutisk acceptable salte deraf.
• De farmaceutisk acceptable salte af forbindelsen med formlen I omfatter konventionelle ikke-toksiske salte eller quarternære ammonium salte af for-5 bindeiser med formlen I, der dannes f.eks. ud fra ikke-toksiske uorganiske eller organiske syrer. F.eks. omfatter sådanne konventionelle ikke-toksiske salte afledt fra uorganiske syrer som saltsyre, hydrogenbromidsyre, svovlsyre, sulfatsyre, phosphorsyre og salpetersyre, og saltene fremstillet ud fra organiske syrer, såsom eddikesyre, propionsyre, ravsyre, glycolsyre, stearin-10 syre, mælkesyre, æblesyre, vinsyre, citronsyre, ascorbinsyre, pamsyre, mal-einsyre, hydroxymaleinsyre, phenyleddikesyre, glutaminsyre, benzoesyre, salicylsyre, sulfanilsyre, 2-acetoxybenzoesyre, fumarsyre, toluensulfonsyre, methansulfonsyre, ethandisulfonsyre, oxalsyre og isethionsyre.
15 De farmaceutisk acceptable salte omfattet af den foreliggende opfindelsen kan syntetiseres ud fra forbindelser med formlen I, som indeholder en basisk eller sur gruppe, ved konventionelle kemiske metoder. Generelt fremstilles saltene ved omsætning af den frie base eller syre med stoichiometriske mængder eller med et overskud af den ønskede saltdannende uorganiske 20 eller organiske syre eller base i et egnet opløsningsmiddel eller forskellige kombinationer af opløsningsmidler.
Forbindelserne med formlen l's evne til at antagonisere CCK og gastrin gør dem nyttige som farmaceutiske midler til pattedyr, specielt til mennesker, til 25 behandling af og undgåelse af sygdomme eller lidelser, hvori CCK og/ eller gastrin kan være involveret. Eksempler på sådanne sygdomstilstande er gastrointestinal sygdomme, specielt sådanne som irritabelt tarmsyndrom, gastroesophageal refluks sygdom eller sår, overskud af pancreatisk eller gastisk sekretion, akut pancreatitis eller motilitets lidelser, lidelser i det centrale 30 nervesystem forårsaget af CCK-interaktioner med dopamin, såsom neurolep-tiske sygdomme, tardiv dyskinesia, Parkinson's syge, psykose eller Gilles de la Tourette syndrom, lidelser i de appetitregulerende systemer, Zollinger-Ellison syndom, antal G celle hyperplasia eller smerte (potentiering af opiat DK 175575 B1 7 analgesi), såvel som visse tumorer i den nedre esophagus, maven, tarmene og colon.
Forbindelserne med formlen I kan administreres til en human patient enten 5 alene eller, fortrukkent, i kombination med farmaceutisk acceptable bærere eller fortyndingsmidler, eventuelt med kendte adjuvanser, såsom alun, i et farmaceutisk præparat, efter standardiseret farmaceutisk praksis. Forbindelserne kan administreres oralt eller parenteralt, herunder intravenøst, intra-muskulært, intraperitonealt, subkutant eller topisk.
10
Til oral anvendelse af en antagonist for CCK ifølge opfindelsen kan de udvalgte forbindelser f.eks. administreres i form af tabletter eller kapsler eller som en vandig opløsning eller suspension. I tilfælde af tabletter til oral anvendelse anvendes sædvanligvis bærere, der indeholder lactose og majsstivelse, og 15 smøremidler, såsom magnesiumstearat, tilsættes almindeligvis. Til oral administrering på kapselform omfatter nyttige fortyndingsmidler lactose og tørret majsstivelse. Når der kræves vandige suspensioner til oral anvendelse, kombineres den aktive bestanddel med emulgerings- og suspenderingsmidler. Om ønsket kan der tilsættes visse sødestoffer og/eller smags-20 og aromastoffer. Til intramuskulær, intraperitoneal, subkutan og intravenøs anvendelse fremstilles sædvanligvis sterile opløsninger af den aktive bestanddel, og pH for opløsningere indstilles på egnet måde og pufres.
Til intravenøs anvendelse må den totale koncentration af opløste stoffer kon-25 traileres for at gøre præparatet isotonisk.
Når en forbindelse med formlen I anvendes som antagonist for CCK eller gastrin i en human patient, vil den daglige dosis normalt blive bestemt af lægen med den dosis, der almindeligvis afhænger af alder, vægt og respons 30 fra den individuelle patient, såvel som alvoren af patientens symtomer. I de fleste tilfælde vil en effektiv daglig dosis imidlertid ligge i området fra ca. 0,05 mg/kg til ca. 50 mg/kg legemsvægt, og foretrukkent 0,5 mg/kg til ca. 20 mg/kg legemsvægt, administreret i en enkelt eller opdelte doser. I nogle DK 175575 B1 8 tilfælde kan det imidlertid være nødvendigt at anvende doser udenfor disse grænser.
Ved behandlingen af irritabel tarmsyndrom kan der f.eks. oralt (p.o.) adminis-5 treres 0,1 til 10 mg/kg af CCK-antagonist opdelt i to doser pr. dag (b.i.d.).
Ved behandling af forsinket mavetømning vil dosisområdet sandsynligvis være det samme, skønt lægemidlet kan administreres enten intravenøst (I.V.) eller oralt, idet den I.V. dosis sandsynligvis har tendens til at være lidt lavere p.g.a. bedre tilgængelighed. Akut pancreatitis kan behandles fortruk-10 kent med en I.V. form, hvorimod spasme- og/eller refleks- øsophageal, kronisk pancreatitis, post vagotomi diarre, anorexia eller smerte forbundet med gaidedyskinesia kan indikere administrering oralt.
Anvendelsen af en gastrin-antagonist som tumor palliativ for gastrointestinale 15 neoplasmer med g astrin-recepto rer som en modulator for aktiviteten af det centrale nervesystem, behandling af Zollinger-Ellison syndromet eller i behandlingen af mavesårslideiser eller lignende er en dosis på 0,1 til 10 mg/kg administreret 1-4 gange dagligt indikeret.
20 Fordi disse forbindelser antagoniserer virkningen af CCK i dyr, kan de også anvendes som foderadditiver for at forøge foderindtagelsen hos dyr i en daglig dosering på ca. 0,05 til 50 mg/kg legemsvægt.
Forbindelserne med formlen I fremstilles ved at omsætte en amin med form-25 len: en.
cd-.'
30 H
9 DK 175575 B1
med et isocyanat med formlen H3CX
5 <^^NZ=C=0
Udgangsforbindelsen 3-amino-5-substituerede og 1-substituerede benzodi-azepin fremstilles som beskrevet i teknikken. Alternativt fremstilles den som 10 vist nedenfor: i , ff) ,. .*. JL· λΑ V\J -> Vv/ ~Γ^ 12 ΤΓ H2 ^ V-“ h 2· isoamyl- r" g nitrat (R^ = phenyl) 20
Behandling af den 3-usubstituerede forbindelse med en egnet base, foretruk-kent kalium t-butoxid, efterfulgt af et nitroserende middel, foretrukkent isoa-mylnitrat, giver oximen. Reduktion, foretrukkent med Raney-nikkel, giver 3-aminoforbindelsen. Alternativt fremstilles aminen ved den metode, der er 25 omhandlet i US patentbeskrivelse nr. 4 628 084.
I tilfælde, hvor udgangsmaterialerne er optisk aktive, kontrolleres kiraliteten ved C3 ved syntese. Når racemiske udgangsmaterialer anvendes, opnås ra-cemiske produkter. De enantiomere kan fraskilles ved opspaltningen.
30 DK 175575 B1 10
In vitro aktivitet af forbindelserne med formlen I
Den biologiske aktivitet af forbindelsen med formlen I er blevet bedømt under anvendelse af 1) en 125l-CCK-receptorbindingsprøve og in vitro isolerede 5 vævspræparater og 2) 125l-gastrin~ og 3H-pentagastrin-bindingsprøve.
Materialer og metoder 1. CCK-receptorbinding (pancreas) 10 CCK-33 blev radiomærket med 125l-Bolton Hunter reagens (2000 Ci/mmole) som beskrevet af Sankara et al. (J. Biol. Chem. 254: 9349-9351, 1979). Receptorbinding blev foretaget efter Innis og Snyder (Proc. Natl. Acad. Sci. 77: 6917-6921, 1980) med mindre modifikationer i henseende til tilsætning af 15 proteaseinhibitorer, phenylmethan sulfonylfluorid og o-phenanthrolin. Sidstnævnte to forbindelser har ingen virkning på 125l-CCK-receptorbind-ingsprøven.
Han Spraque-Dawiey rotter med en vægt på 200-350 g blev slået ihjel ved 20 halshugning. Hele pancreas blev dissekeret fri for fedtvæv og blev homogeniseret i 20 volumen iskold 50 mM Tris-HCI (pH 7,7 ved 25 °C) med en Brink-mann Polytron PT 10. Homogenaterne blev centrifugeret ved 48.000 g i 10 min. Pellets blev resuspenderet i Tris-puffer, centrifugeret som i det foregående og resuspenderet i 200 volumen bindingsprøvepuffer (50 mM 25 Tris-HCI, pH 7,7 ved 25 °C, 5 mM dithiothrietol, 0,1 mM bacitracin, 1,2 mM phenylmethansulfonyifluorid og 0,5 mM o-phenanthrolin). Til bindingsprøven blev 25 pi puffer (til total binding) eller umærket CCK-8 sulfat til opnåelse af en slutkoncentration på 1 pm (for ikke-specifik binding) eller forbindelserne med formlen I (til bestemmelse af inhibering af 125l-CCK-binding) og 25 μΙ 30 125l-CCK-33 (30.000-40.000 cpm) sat til 450 μΙ membransuspensioner i mik- rofugerør. Alle prøver blev foretaget dobbelt eller tredobbelt. Reaktionsblandingerne blev inkuberet ved 37 ’C i 30 min. og centrifugeret i Beckman mikro-fuge (4 min.) umiddelbart efter tilsætning afen 1 ml iskold inkuberingspuffer.
DK 175575 B1 11
Den overliggende væske blev luftet og bortkastet, pellets blev talt med en Beckman gamma 5000. Til Scatchard-analyse (Ann. N.Y. Acad. Sci. 51; 660, 1949), ,25l-CCK-33 blev progressivt fortyndet med stigende koncentrationer af CCK-33.
5 2. CCK-receptorbinding (hjerne) CCK-33 blev radiomærket, og bindingen blev foretaget ifølge beskrivelsen for pancreas metoden med modifikationer efter Saito et al., J. Neurochem. 37: 10 483-490,1981.
Han Hartley marsvin med en vægt (300-500 g) blev slået ihjel ved halshugning, og hjernerne blev fjernet og anbragt i iskold 50 mM Tris-HCI plus 7,58 g/l Trizma-7,4 (pH 7,4 ved 25 *C). Cerebral cortex blev dissekeret og anvendt 15 som en receptorkilde. Hvert gram frisk marsvinehjernevæv blev homogeniseret i 10 ml Tris/Trizma-puffer med en Brinkman polytron PT-10. Ho-mogenateme blev centrifugeret ved 42.000 g i 15 min. Pellets blev gensuspenderet i Tris-puffer, centrifugeret som i det foregående og gensuspenderet i 200 volumen bindingsprøvepuffer (10 mM N-2-hydroxyethyl-piperazin-N'-2-20 ethansulfonsyre (HEPES), 5 mM MgCI2, 0,25 mg/ml bacitracin, 1 mM ethy-lenglycol-bis-(P-aminoethylether-N,N’-tetraeddikesyre) (EGTA), og 0,4% bovin serum albumin (BSA)). Til bindingsprøven blev 25 pi buffer (til total binding) eller umærket CCK-8-sulfat til opnåelse af en slutkoncentration på 1pm (for ikke-specifik binding) eller forbindelserne med formlen I (til bestemmelse 25 af inhibering af 125l-CCK-binding) og 25 μΙ 125l-CCK-33 (30.000-40.000 cmp) sat til 450 μΙ af membransuspensioneme i mikrofugerør. Alle prøver blev foretaget dobbelt eller tredobbelt. Reaktionsblandingerne blev inkuberet ved 25 °C i 2 timer og centrifugeret i en Beckman mikrofuge (4 min.) umiddelbart efter tilsætning af 1 ml iskold inkuberingspuffer. Den overliggende væske 30 blev luftet og bortkastet, pellets blev talt med Beckman gamma 5000.
Forbindelserne med formlen I kan bestemmes som værende konkurrerende antagonister for CCK efter følgende prøver.
DK 175575 B1 12 3. Isoleret marsvinegaldeblære
Han Hartley marsvin med en vægt på 400-600 g blev slået ihjel ved hal-5 shugning. Hele galdeblæren dissekeres fri fra vedhængende væv og skæres i to lige store halvdele. Galdeblærestrimlerne ophænges langs aksen af galdegangen i et 5 ml organbad under en spænding på 1 g. Organbadet indeholder en Kreb's bicarbonatopløsning (118 mM NaCl, 4,75 mM KCI, 2,54 mM CaCI2, 1,19 mM KH2P04, 1,2 mM MgS04, i 25 mM NaHC03 og 11 mM dex-10 trose) holdes ved 32 °C og bobles med 95% 02 og 5% C02. Isometriske koncentrationer optegnes under anvendelse af Statham (60 g, 0,12 mm) strain gage og en Hewlett-Packard (77588) recorder. Vævene vaskes hvert 10. min. i 1 time til opnåelse af ligevægt før begyndelsen af studiet. CCK-8 sættes kumulativt til badene, og ECso’er bestemmelse under anvendelse af 15 regressionsanalyse. Efter udvaskning (hvert 10 min. i 1 time) tilsættes forbindelsen med formlen I mindst 5 min. før tilsætningen af CCK-8, og EC50 for CCK-8 bestemmes i nærværelse af forbindelsen med formlen I på tilsvarende måde.
20 4. Isoleret længdemuskel fra marsvineileum Længdemuskelstrimler med tilknyttet nerveplexsus fremstilles som beskrevet i Brit. J. Pharmac. 23: 356-363, 1964, J. Physiol. 194: 13-33, 1969. Han Hartley marsvin halshugges, og ileum fjernes (10 cm af den terminale ileum bort-25 kastes, og det næste 20 cm stykke anvendes). Et stykke (10 cm) af ileum strækkes på en glaspipette. Under anvendelse af en vatpind til at stryge væk tangentielt fra den mesentere tilknytning ved den ene ende adskilles den længderettede muskel fra den underliggende cirkulære muskes. Den længderettede muskel eller longitudinale muskel bindes derpå til en tråd, og ved 30 forsigtig træk fjernes den fra hele musklen. Et stykke på ca. 2 cm ophænges i 5 ml organbad indeholdende Krebs-opløsning og bobles med 95% 02 og 5% C02 ved 37 "C under en spænding på 0,5 g. CCK-8 tilsættes kumulativt til DK 175575 B1 13 badene, og EC50-værdier bestemmes i nærværelse afog fravær af forbindelser med formlen I som beskrevet i galdeblæreforsøget i det foregående.
Gastrin antagonisme 5
Gastrin antagonist-aktivitet af forbindelser med formlen I bestemmes under anvendelse af følgende prøve.
Gastrin-receptorbinding i marsvinemavekirtler. Fremstilling af marsvine-10 mavemukosalekirtler
Marsvinemavemukosalekirtler eller slimhindekirtler blev fremstillet ved proceduren af Bergllingh og Obrink Acta Physiol. Scand. 96: 150 (1976) med en lille modifikation efter Praissman et al. C. J. Receptor Res. 3 (1983). Mave-15 slimhinde fra Hartley hanmarsvin med en vægt på 300-500 g blev vasket omhyggeligt og hakket med fine knive i standardpuffer bestående af følgende: 130 mM NaCI, 12 mM NaHC03, 3 mM NaH2P04, 3 mM Na2HP04, 3 mM K2HPO4, 2 mM MgS04l ImM CaCI2, 5 mM glucose og 4 mM L-glutamin, 25 mM HEPES ved pH 7,4. Det hakkede væv blev vasket og derpåinkuberet 20 i et 37 °C rystebad i 40 min. med pufferen indeholdende 0,1% collagenase og 0,1% BSA og boblet med 95% 02 og 5% CO2. Vævene blev passeret to gange gennem en 5 ml glassprøjte til frigørelse af mavekirtlerne og blev derpå filtreret gennem 200 mesh nylon. De filtrerede kirtler blev centrifugeret ved 270 g i 5 min. og vasket 2 gange ved gensuspendering og centrifugering.
25
Bindingsstudier
De vaskede marsvinemavekirtler fremstillet som i det foregående blev resus-penderet i 25 ml standardpuffer indeholdende 0,25 mg/ml bacitracin. For 30 bindingstudier blev der til 220 pi mavekirtler i tripelrør sat 10 μΙ puffer (til total binding) eller gastrin (1 pM slutkoncentration for ikke-specifik binding) eller prøveforbindelse og 10 pi 125l-gatsrin (NEN, 2200 Ci/mmol, 25 pM slut) eller 3H-pentagastrin (NEN 22 Ci/mmol, 1 nM slut). Rørene blev luftet med 95% DK 175575 B1 14 O2 og 5% CO2 og forsynet med kappe. Reaktionsblandingerne efter inkuber-ing ved 25 °C i 30 min. blev filtreret under reduceret tryk på glas G/F B filtre (Whatman) og straks vasket yderligere med 4 x 4 ml stand ard puffer indeholdende 0,1% BSA. Radioaktitiveten på filtrene blev målt under anvendelse af 5 en Beckman gamma 5500 for 125l-gastrin eller væske scintillationstælling for 3H-pentagastrin.
In vitro resultater 10 1. Virkning af forbindelserne med formlen I på 125l-CCK-33 receptorbinding
De foretrukne forbindelser med formlen I er de, som inhiberede specifik 125l-CCK-33 binding på en koncentrationsafhængig måde.
15 Scatchard-analyse af specifik 125l-CCK-33 receptorbinding i nærværelse eller fravær af forbindelserne med formlen I indikerede, at forbindelsen med formlen I kompetitivt inhiberede specifik 12ol-CCK-33 receptorbinding, da den forøgede KD-værdien (dissociations konstanten) uden at påvirke Bmax (maksimalt receptorantal). En Kj-værdi (dissociationskonstant for inhibitor) for for-20 bindeiserne med formlen I blev bestemt.
De i tabel I anførte data blev opnået for forbindelsen med formlen I.
Tabel I
25 CCK-receptorbindingsresultater IC50(/jM) 125 125 125
Forbindelse I-CCK I-CCK I-gastrin
Ifølge eksenpel pancreas hjerne mavekirtler 30 1 0,0081 0,0071 0,0031 2 1,4 0,003 .0,00066 DK 175575 B1 15
De mest foretrukne forbindelser med formlen I er følgende: N-(2,3-dihydro-1 -methyl-2-oxo-5-phenyl-1 H-1,4-benzodiazepin-3-yl)-N’-(3-methylphenyl)-urinstof, og 5 (R)-N-(2,3-dihydro-1 -methyl-2-oxo-5-phenyl-1 H-1,4-benzodiazepin-3-yl)-N’- (3-methoxyphenyl)-urinstof,
Et eksempel på gastrin-specifikke forbindelser med formlen I er: 10 (R)-N-(2,3-dihydro-1 -methyl-2-oxo-5-phenyl-1 H-1,4-benzodiazepin-3-yl)-N'- (3-methylphenyl)-urinstof,
Opfindelsen forklares nærmere ved hjælp af de efterfølgende eksempler. Alle temperaturer er i Celsius-grader.
15
Eksempel 1 N-(2,3-dihydro-1 -methyl-2-oxo-5-phenyl-1 H-1 ^-benzodiazepin-S-yQ-N'-fS-methylphenylj-urinstof 20 Ækvimolære mængder 3(R,S)-amino-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-on og 3-methylphenylisocyanat blev blandet i 8 ml tør tetra-hydrofuran ved stuetemperatur. Reaktionsblandingen fik lov at stå i 8 timer og blev derpå filtreret. De samlede faste stoffer blev vasket med tetrahydrofu-25 ran og tørret i vakuum over P2O5 til opnåelse af det analytiske produkt, smp. 207-209 ‘C.
NMR: Bekræfter strukturen af produktet.
HPLC: Mere end 99% ren.
MS: Molekylarion ved m/e = 398.
30
Analyse for: C23H22N4O2:
Beregnet: C, 72,34; H, 5,56; N, 14,06; DK 175575 B1 16
Fundet: C, 72,26; H, 5,22; N, 14,23.
Eksempel 2 5 (R)-N-(2,3-dihydro-1 -methyl-2-oxo-5-phenyl-1 H-1,4-benzodiazepin-3-yl)-N'- (3-methylphenyl)-urinstof Ækvimolære mængder 3(R,S)-amino-1,3-dihydro-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-on og 3-methylphenylisocyanat blev blandet i 8 ml tør tetra-10 hydrofuran ved stuetemperatur. Reaktionsblandingen fik lov at stå i 8 timer og blev derpå filtreret. De samlede faste stoffer blev vasket med tetrahydrofu-ran og tørret i vakuum over P205til opnåelse af det analytiske produkt, smp. 208-210 “C.
NMR: Bekræfter strukturen af produktet.
15 HPLC: Mere end 99% ren.
MS: Molekylarion ved m/e = 399 (FAB).
Analyse for: C24H22N4O2: 20 Beregnet: C, 72,34; H, 5,56; N, 14,06;
Fundet: C, 72,12; H, 5,84; N, 14,04.
Claims (4)
1. Forbindelsen med formlen 5 ch. /V~CH> t -· o o )—y (ι) ΓΤ >-- » ^ H 1° samt dens enantiomerer og farmaceutisk acceptable salte deraf.
2. Forbindelse ifølge krav 1, der er (R)-N-{2,3-dihydro-1-methyl-2-oxo-5-15 phenyl-1 H-1,4-benzodiazepin-3-yl)-N’-(3-methylphenyl)urinstof-
3. Farmaceutisk sammensætning omfattende en forbindelse ifølge krav 1 eller 2 og en farmaceutisk acceptabel bærer deraf. 20
4. Anvendelse af en forbindelse ifølge krav 1 eller 2 til fremstilling af et lægemiddel til at forhindre eller behandle sygdomstilstande eller lidelser i mave-tarm-kanalen, det centrale nervesystem og det appetitregulerende system.
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| US07/026,420 US4820834A (en) | 1984-06-26 | 1987-03-16 | Benzodiazepine analogs |
| US2642087 | 1987-03-16 |
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1987
- 1987-03-16 US US07/026,420 patent/US4820834A/en not_active Expired - Lifetime
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1988
- 1988-03-07 NZ NZ223772A patent/NZ223772A/xx unknown
- 1988-03-08 IL IL8566888A patent/IL85668A/en not_active IP Right Cessation
- 1988-03-11 ES ES88302141T patent/ES2052704T3/es not_active Expired - Lifetime
- 1988-03-11 EP EP88302141A patent/EP0284256B1/en not_active Expired - Lifetime
- 1988-03-11 DE DE3889756T patent/DE3889756T2/de not_active Expired - Fee Related
- 1988-03-11 CY CY194888A patent/CY1948A/xx unknown
- 1988-03-11 AT AT88302141T patent/ATE106401T1/de not_active IP Right Cessation
- 1988-03-15 IE IE75588A patent/IE64300B1/en not_active IP Right Cessation
- 1988-03-15 AU AU13133/88A patent/AU1313388A/en not_active Abandoned
- 1988-03-15 CA CA000561493A patent/CA1332411C/en not_active Expired - Fee Related
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- 1988-03-15 PT PT86980A patent/PT86980B/pt not_active IP Right Cessation
- 1988-03-15 KR KR1019880002698A patent/KR960012197B1/ko not_active Expired - Fee Related
- 1988-03-16 JP JP63060643A patent/JP3039783B2/ja not_active Expired - Fee Related
- 1988-03-16 ZA ZA881866A patent/ZA881866B/xx unknown
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1992
- 1992-06-26 MX MX9203479A patent/MX9203479A/es unknown
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1996
- 1996-08-15 HK HK157196A patent/HK157196A/en not_active IP Right Cessation
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| CA1332411C (en) | 1994-10-11 |
| NZ223772A (en) | 1991-09-25 |
| IE64300B1 (en) | 1995-07-26 |
| JPS63238069A (ja) | 1988-10-04 |
| IE880755L (en) | 1988-09-16 |
| HK157196A (en) | 1996-08-23 |
| KR960012197B1 (ko) | 1996-09-16 |
| DE3889756D1 (de) | 1994-07-07 |
| DK139588A (da) | 1989-01-06 |
| US4820834A (en) | 1989-04-11 |
| ATE106401T1 (de) | 1994-06-15 |
| EP0284256B1 (en) | 1994-06-01 |
| DK139588D0 (da) | 1988-03-15 |
| DE3889756T2 (de) | 1994-12-08 |
| KR880011126A (ko) | 1988-10-26 |
| ES2052704T3 (es) | 1994-07-16 |
| PT86980B (pt) | 1992-06-30 |
| MX9203479A (es) | 1992-08-01 |
| ZA881866B (en) | 1988-09-06 |
| PT86980A (pt) | 1988-04-01 |
| JP3039783B2 (ja) | 2000-05-08 |
| CY1948A (en) | 1988-03-11 |
| EP0284256A1 (en) | 1988-09-28 |
| IL85668A (en) | 1995-03-30 |
| AU1313388A (en) | 1988-09-15 |
| IL85668A0 (en) | 1988-08-31 |
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