[go: up one dir, main page]

GB868897A - Improvements in or relating to 9ª--halosteroids - Google Patents

Improvements in or relating to 9ª--halosteroids

Info

Publication number
GB868897A
GB868897A GB16113/59A GB1611359A GB868897A GB 868897 A GB868897 A GB 868897A GB 16113/59 A GB16113/59 A GB 16113/59A GB 1611359 A GB1611359 A GB 1611359A GB 868897 A GB868897 A GB 868897A
Authority
GB
United Kingdom
Prior art keywords
dione
pregnene
give
hydroxy
methyl
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
GB16113/59A
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.)
GD Searle LLC
Original Assignee
GD Searle LLC
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 GD Searle LLC filed Critical GD Searle LLC
Publication of GB868897A publication Critical patent/GB868897A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J5/00Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J75/00Processes for the preparation of steroids in general

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Steroid Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention comprises steroids of the formula: <FORM:0868897/IV (b)/1> (wherein R is an alkyl group of at most 6 carbon atoms, X is carbonyl, hydroxymethylene or alkanoyloxymethylene, the hydroxy or alkanoyloxy group being in the b -configuration and containing at most 3 carbon atoms, Y is -CH2-CH2-, -CH=CH-, -CH(CH3)-CH2- or -C(CH3)=CH-, the 6-methyl group when present being in the a -configuration and Hal is bromine, chlorine or fluorine); and their preparation either by esterification of the 17a -hydroxy compounds, using either a solution of the appropriate acid anhydride in the same acid or using the appropriate acid chloride, or by mixing a 9b : 11b -epoxy-17a -acyloxy-4-pregnene-30:20-dione with a hydrogen halide in a suitable solvent and, if desired, oxidising the 11b -hydroxysteroid so obtained to the corresponding 11-oxo steroid. In the esterification referred to above, when the starting material is an 11b : 17a -diol the product is commonly a mixture of the 11b -hydroxy-17a -acylate and the 11b : 17a -diacylate, which may be separated by chromatography. Examples illustrating these processes are given. Further examples describe the dehydrogenation of various steroids of the invention saturated in the 6 : 7-position by heating with chloranil and p-toluene-sulphonic acid in xylene to give the corresponding D 4:6-steroids. 6a - Methyl- 9a - fluoro- 17a - hydroxy- 4-pregnene-3 : 11 : 20-trione is prepared by inoculating a mixture of 6a -methyl-17a -hydroxy-4-pregnene-3 : 20-dione and casein digest medium with a culture of Rhizopus nigricans to give 6a -methyl-11a :17a -dihydroxy-4-pregnene-3 : 20-dione, reacting this with p-toluene-sulphonyl chloride to give the p-toluene sulphonic ester thereof, heating this ester in collidine to give 6a -methyl-17a -hydroxy-4 : 9(11)-pregnadiene-3 : 20-dione, re-acting this with N-bromo-acetamide in presence of perchloric acid to give 6a -methyl-9a -bromo-11b :17a - dihydroxy-4- pregnene- 3 : 20-dione, heating this with potassium acetate in ethanol to give 6a -methyl-9b : 11b -epoxy-17a -hydroxy-4-pregnene-3 : 20-dione, reacting this with hydrofluoric acid to give 6a -methyl-9a -fluoro- 11b : 17a - dihydroxy-4- pregnene- 3 : 20-dione, and oxidizing this with chromic anhydride in pyridine. 9b : 11b - Epoxy- 17a - acetoxy- 4- pregnene-3 : 20-dione is prepared by acetylating 17a -hydroxy-4 : 9(11)-pregnadiene-3 : 20-dione to give 17a -acetoxy-4 : 9(11)-pregnadiene-3 : 20-dione, reacting this with N-bromo-acetamide in presence of perchloric acid to give 9a -bromo-11b - hydroxy-17a - acetoxy-4-pregnene-3:20-dione and heating this with sodium carbonate in aqueous tetrahydrofuran and then with acetic acid.
GB16113/59A 1958-05-19 1959-05-11 Improvements in or relating to 9ª--halosteroids Expired GB868897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US868897XA 1958-05-19 1958-05-19

Publications (1)

Publication Number Publication Date
GB868897A true GB868897A (en) 1961-05-25

Family

ID=22201557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16113/59A Expired GB868897A (en) 1958-05-19 1959-05-11 Improvements in or relating to 9ª--halosteroids

Country Status (1)

Country Link
GB (1) GB868897A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107540719A (en) * 2016-06-26 2018-01-05 浙江仙琚制药股份有限公司 A kind of 17 α acetoxyl groups(8,13)The preparation method of the α hydroxyl progesterones of alkene 11

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107540719A (en) * 2016-06-26 2018-01-05 浙江仙琚制药股份有限公司 A kind of 17 α acetoxyl groups(8,13)The preparation method of the α hydroxyl progesterones of alkene 11
CN107540719B (en) * 2016-06-26 2020-02-21 浙江仙琚制药股份有限公司 A kind of preparation method of 17α-acetoxy-(8,13)-ene-11α-hydroxyprogesterone

Similar Documents

Publication Publication Date Title
Agnello et al. The Dehydrogenation of Corticosteroids with Chloranil1
GB902294A (en) Improvements in or relating to steroids and the manufacture thereof
GB868897A (en) Improvements in or relating to 9ª--halosteroids
US3117140A (en) 3-position substituted estranes
US3164618A (en) Alkylated steroids
US3184484A (en) 5, 10-methylene-19-nor- and 5, 10-seco-5, 19-cyclo-10-fluoro-androstenes and pregnenes and processes for their preparation
GB1037162A (en) Improvements in or relating to 19-oxo-androstane compounds and derivatives thereof
IE36592B1 (en) Process for the manufacture of pregnane derivatives
US3014938A (en) Preparation of 16, 21-diacetate derivative of cyclopentanophenanthrene compounds
US2744108A (en) 3-ethylene mercaptoles of 11-oxygenated derivatives of 17, 21-dihydroxy-4-pregnene-3, 20-diones
US3718542A (en) Inverted steps for the preparation of 9{60 -fluoro-16-methylene-prednisolone or-prednisone and 21-esters thereof
US3684800A (en) Di-epoxide process for the preparation of 9{60 -fluoro-16-methylene-prednisolone or-prednisone, and 21-esters thereof
US2744110A (en) 3-ethylene mercaptole derivatives of progesterone
US3211725A (en) 6alpha-methyl-21 halo nor ethisterones and intermediates in the preparation thereof
US3089873A (en) 16alpha-alkoxycorticoids
US3740317A (en) Degradation of side chain in sapogenins
US3026339A (en) 9, 11-dihalogeno substituted steroids of the androstane series
US3350427A (en) Process for the dehydrohalogenation of steroids
US3665022A (en) Degradation of side chain in sapogenins
US3828083A (en) Novel 6alpha,16alpha-dimethyl steroids
US3547913A (en) 16beta-methyl-16alpha,17alpha-epoxy pregnenolone and the 3-acylates thereof
US2949478A (en) Process of cleaving 9, 11 oxido steroids with alcohols and organic acids
GB906443A (en) Steroid compounds
US3574689A (en) 6,1&#39;-spirocyclopropyl progesterones and processes
US3246021A (en) Intermediates in the preparation of 6beta-methyl-halo ethisterone compounds