GB879101A - Improvements in or relating to cyclopentanophenanthrene compounds and process for the manufacture thereof - Google Patents

Improvements in or relating to cyclopentanophenanthrene compounds and process for the manufacture thereof

Info

Publication number
GB879101A
GB879101A GB17728/60A GB1772860A GB879101A GB 879101 A GB879101 A GB 879101A GB 17728/60 A GB17728/60 A GB 17728/60A GB 1772860 A GB1772860 A GB 1772860A GB 879101 A GB879101 A GB 879101A
Authority
GB
United Kingdom
Prior art keywords
hydrogen
carbon atoms
lower alkyl
preparation
relating
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
GB17728/60A
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.)
Syntex SA
Original Assignee
Syntex SA
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 Syntex SA filed Critical Syntex SA
Publication of GB879101A publication Critical patent/GB879101A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J1/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J75/00—Processes for the preparation of steroids in general

Landscapes

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

Abstract

The invention comprises compounds of the formula:- <FORM:0879101/IV (b)/1> wherein R1 is hydrogen or a hydrocarbon carboxylic acyl group of 2 to 12 carbon atoms, R2 is hydrogen or a lower alkyl group of 1 to 6 carbon atoms, R3 is hydrogen when R2 is a lower alkyl group or R3 is hydrogen or a hydrocarbon carboxylic acyl group of 2 to 12 carbon atoms when R2 is hydrogen, R4 is lower alkyl, and X is a double bond or the C4-5 linkage of an allo compound, together with their preparation by alkali metal double hydride reduction of the corresponding 3-keto compounds, e.g. with sodium borohydride followed by esterification if required. Examples detail the preparation of 2a -methyl-19-nor androstane-3,17b -diol, its \D4 derivative and their 2a ,17a -dimethyl analogues. Specifications 853,291 and 854,407 also are referred to. Reference has been directed by the Comptroller to Specification 809,485.
GB17728/60A 1956-12-17 1957-12-16 Improvements in or relating to cyclopentanophenanthrene compounds and process for the manufacture thereof Expired GB879101A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MX879101X 1956-12-17

Publications (1)

Publication Number Publication Date
GB879101A true GB879101A (en) 1961-10-04

Family

ID=19743128

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17728/60A Expired GB879101A (en) 1956-12-17 1957-12-16 Improvements in or relating to cyclopentanophenanthrene compounds and process for the manufacture thereof

Country Status (1)

Country Link
GB (1) GB879101A (en)

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