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GB1326745A - Chromone-2-carboxylic acid derivatives - Google Patents

Chromone-2-carboxylic acid derivatives

Info

Publication number
GB1326745A
GB1326745A GB2000270A GB1326745DA GB1326745A GB 1326745 A GB1326745 A GB 1326745A GB 2000270 A GB2000270 A GB 2000270A GB 1326745D A GB1326745D A GB 1326745DA GB 1326745 A GB1326745 A GB 1326745A
Authority
GB
United Kingdom
Prior art keywords
compound
formula
group
acetyl
alkyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2000270A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fisons Ltd
Original Assignee
Fisons Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fisons Ltd filed Critical Fisons Ltd
Publication of GB1326745A publication Critical patent/GB1326745A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D311/00Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/22Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4
    • C07D311/24Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4 with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00Sulfonic acids; Halides, esters, or anhydrides thereof
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/54Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of compounds containing doubly bound oxygen atoms, e.g. esters
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/09Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C59/00Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • C07C59/40Unsaturated compounds
    • C07C59/76Unsaturated compounds containing keto groups
    • C07C59/90Unsaturated compounds containing keto groups containing singly bound oxygen-containing groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1326745 Chromone-2-carboxylic acid derivatives FISONS Ltd 19 April 1971 [25 April 1970] 20002/70 Heading C2C Novel compounds of the Formula I in which P, Q, T, P<SP>1</SP>, Q<SP>1</SP> and T<SP>1</SP> may be the same or different and may be H or substituents other than H, R<SP>1</SP> is H or substituted or unsubstituted C 1-10 alkyl or alkoxy groups or a substituted or unsubstituted aryl group, R<SP>12</SP> is H, -COCH 2 R<SP>1</SP>, alkyl or an allyl-alkyl group of up to 6C, X is a carbon-carbon bond or a single atom which may carry substituents not forming part of the linkage between the two benzene nuclei, and W is H or -COCH 2 R<SP>1</SP>, and salts, esters or amides thereof may be obtained by (a) reacting a compound of Formula II with a compound of Formula III in which L<SP>1</SP> is a good leaving group or a group -X<SP>1</SP>Y, Y being H or alkali metal, R is H or, together with the OOC group, forms an ester, L<SP>2</SP> is a good leaving group when L<SP>1</SP> is -X<SP>1</SP>Y, and a group -X<SP>1</SP>Y when L<SP>1</SP> is a good leaving group, and X<SP>1</SP> denotes -S- or -O-, (b) by cyclization of groups A<SP>1</SP> and A<SP>2</SP> in a compound of Formula VI where A<SP>1</SP> and A<SP>2</SP> represent pairs of groups (i) -COOHR<SP>1</SP>COCOR<SP>6</SP> and -OM, or (ii) -H- and -OC(COOM)=CR<SP>1</SP>-COOM, in which R<SP>6</SP> is an -OM group or a group convertible thereto, M is H or an alkali metal; (c) (i) subjecting to a Fries rearrangement a compound of Formula Id or (ii) opening the pyrone ring of a single chromone nucleus in a corresponding compound of Formula VIII under alkaline conditions; (d) by hydrolysing or oxidizing a compound of Formula I in which -COOH is replaced by D where D denotes a group which is hydrolysable or oxidizable to -COOH; (e) dehydrogenating a compound of Formula X (f) selectively hydrogenating a compound of I in which at least one of groups P to T<SP>1</SP> represents an alkenyl group; (g) subjecting to an elevated temperature a compound of Formula I in which R<SP>12</SP> is alkyl or allyl-alkyl and at least one of P<SP>1</SP> to T<SP>1</SP> is H; (h) by reacting an R ester of a compound of Formula I in which R<SP>12</SP> is H with a compound of formula R<SP>1</SP>CH 2 COOH or an anhydride or acid halide thereof; or (i) reacting a compound as used in (h) with R<SP>11</SP>Hal in which R<SP>11</SP> is an alkyl or allyl-alkyl group, and where desired or necessary converting the compound of Formula I into a pharmaceutically acceptable derivative thereof, or vice versa. The preparation of the following intermediates is also described: p-iodophenol reacts with acetylenedicarboxylic acid dimethyl ester to form 4-iodophenoxyfumaric acid dimethyl ester which is converted to the free acid which on heating with H 2 SO 4 yields 2-carboxy-6-iodochromone, the latter being esterified to the ethyl ester; 2-amino-2-hydroxyacetophenone is diazotized and reacted with potassium xanthate forming 2-hydroxy-5-mercaptoacetophenone; 4- acetyl-3-hydroxyaniline is diazotized and reacted with SO 2 forming 4-acetyl-3-hydroxybenzenesulphonyl chloride which is reduced to 4-acetyl-3- hydroxythiophenol and an Na salt is formed; 2-hydroxy-4-methoxy-acetophenone and chlorosulphonic acid yield 5-acetyl-4-hydroxy-2-methoxybenzenesulphonic acid, the K salt of which is reacted with POCl 3 to give the corresponding sulphonyl chloride which is then reduced to 5- acetyl - 4 - hydroxy - 2 - methoxy - thiophenol; 4 - (4 - hydroxyphenoxy)phenylacetate reacts with chlorobenzene forming 2-hydroxy-5-(4- hydroxyphenoxy)acetophenone which is reacted with dimethyl acetylene dicarboxylate to form 60% of 4-(3-acetyl-4-hydroxyphenoxy)phenoxy fumaric acid and 40% of the corresponding substituted maleic acid; 4,41-dihydroxydiphenylmethane reacts with acetic anhydride forming 4-acetoxy-4<SP>1</SP>-dihydroxydiphenyl methane (and also the diacetoxy compound) which rearranges in the presence of TiCl 4 to 3-acetyl-4,41-dihydroxydiphenylmethane. Pharmaceutical compositions useful in the treatment of disorders in which the slowreacting substance of anaphylaxis (SRS-A) is a factor, e.g. skin afflictions, hay fever, or asthma, comprise compounds of the Formula I with a pharmaceutically acceptable diluent or carrier in forms suitable for administration parenterally, orally, by inhalation or topically.
GB2000270A 1970-04-25 1970-04-25 Chromone-2-carboxylic acid derivatives Expired GB1326745A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2000270 1970-04-25

Publications (1)

Publication Number Publication Date
GB1326745A true GB1326745A (en) 1973-08-15

Family

ID=10138712

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2000270A Expired GB1326745A (en) 1970-04-25 1970-04-25 Chromone-2-carboxylic acid derivatives

Country Status (6)

Country Link
CH (5) CH562238A5 (en)
DE (1) DE2120443A1 (en)
FR (1) FR2092089B1 (en)
GB (1) GB1326745A (en)
IL (1) IL36572A0 (en)
NL (1) NL7105580A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1144905A (en) * 1965-03-25 1969-03-12 Fisons Pharmaceuticals Ltd Substituted bis-(2-carboxy-chromonyl-oxy) derivatives and preparation and pharmaceutical compositions thereof
GB1204122A (en) * 1966-09-19 1970-09-03 Fisons Pharmaceuticals Ltd Novel bis-phenyl derivatives and the preparation thereof

Also Published As

Publication number Publication date
CH559202A5 (en) 1975-02-28
IL36572A0 (en) 1971-06-23
FR2092089A1 (en) 1972-01-21
CH562239A5 (en) 1975-05-30
CH562238A5 (en) 1975-05-30
CH552581A (en) 1974-08-15
NL7105580A (en) 1971-10-27
DE2120443A1 (en) 1971-11-11
FR2092089B1 (en) 1974-11-15
CH559203A5 (en) 1975-02-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees