GB805564A - New esters of cyclopentanophenanthrene compounds and process for their production - Google Patents
New esters of cyclopentanophenanthrene compounds and process for their productionInfo
- Publication number
- GB805564A GB805564A GB12156/56A GB1215656A GB805564A GB 805564 A GB805564 A GB 805564A GB 12156/56 A GB12156/56 A GB 12156/56A GB 1215656 A GB1215656 A GB 1215656A GB 805564 A GB805564 A GB 805564A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cyclopentanophenanthrene
- hexahydrobenzoic acid
- production
- pregnadiene
- reacting
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J5/00—Normal 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
-
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention comprises cyclopentanophenanthrene compounds of the general formula <FORM:0805564/IV (b)/1> wherein R represents <FORM:0805564/IV (b)/2> or = O, and R1 represents hydrogen or the hydroxy radical, and the preparation thereof by reacting hexahydrobenzoic acid halide, e.g. the chloride or bromide, or hexahydrobenzoic acid anhydride with the required 21-hydroxy substituted cyclopentanophenanthrene compound in the presence of an organic tertiary base, e.g. pyridine, or by reacting hexahydrobenzoic acid with the required 21-hydroxy substituted cyclopentano-phenanthrene compound in the presence of an esterification catalyst. In the examples the 21-hexahydrobenzoates of D 1,4 - pregnadiene - 17a ,21 - diol - 3,11,20 - trione and D 1,4 - pregnadiene - 11b ,17a ,21 - triol - 3,20 - dione are prepared. Specification 761,526 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR805564X | 1955-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB805564A true GB805564A (en) | 1958-12-10 |
Family
ID=9251373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12156/56A Expired GB805564A (en) | 1955-04-26 | 1956-04-20 | New esters of cyclopentanophenanthrene compounds and process for their production |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB805564A (en) |
-
1956
- 1956-04-20 GB GB12156/56A patent/GB805564A/en not_active Expired
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