GB963964A - Improvements in or relating to the bromination of hecogenin and esters thereof - Google Patents
Improvements in or relating to the bromination of hecogenin and esters thereofInfo
- Publication number
- GB963964A GB963964A GB628463A GB628463A GB963964A GB 963964 A GB963964 A GB 963964A GB 628463 A GB628463 A GB 628463A GB 628463 A GB628463 A GB 628463A GB 963964 A GB963964 A GB 963964A
- Authority
- GB
- United Kingdom
- Prior art keywords
- esters
- bromination
- hecogenin
- relating
- bromohecogenin
- 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
- C07J71/00—Steroids in which the cyclopenta(a)hydrophenanthrene skeleton is condensed with a heterocyclic ring
-
- 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 11b -bromohecogenin and its acetate, and the preparation of 11b -bromohecogenin and its esters with alkanoic acids containing 2 to 6 carbon atoms by bromination of the 11-unsubstituted compounds with bromine in a solvent consisting essentially of a primary alkanol containing at most 4 carbon atoms and in the presence of a strong acid. If the process is effected in methanol, esters are methanolysed. A suitable acid is hydrogen chloride. Examples are given and dehydrobromination of the products or its acetate, is also described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB628463A GB963964A (en) | 1963-02-15 | 1963-02-15 | Improvements in or relating to the bromination of hecogenin and esters thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB628463A GB963964A (en) | 1963-02-15 | 1963-02-15 | Improvements in or relating to the bromination of hecogenin and esters thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
GB963964A true GB963964A (en) | 1964-07-15 |
Family
ID=9811691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB628463A Expired GB963964A (en) | 1963-02-15 | 1963-02-15 | Improvements in or relating to the bromination of hecogenin and esters thereof |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB963964A (en) |
-
1963
- 1963-02-15 GB GB628463A patent/GB963964A/en not_active Expired
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