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
GB13175/49A
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
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Filing date
Publication date
Application filed by Syntex SAfiledCriticalSyntex SA
Publication of GB661805ApublicationCriticalpatent/GB661805A/en
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
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Health & Medical Sciences
(AREA)
General Health & Medical Sciences
(AREA)
Low-Molecular Organic Synthesis Reactions Using Catalysts
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
a -Oestradiol is obtained from lower fatty acid esters of oestrone by reacting said esters with an excess of lithium aluminium hydride in the presence of a dry inert ether solvent and thereafter hydrolyzing the lithium aluminium derivative formed. In examples, oestrone acetate and propionate are used as starting materials. Specification 646,979 is referred to.
GB13175/49A1948-12-231949-05-17Improvements in cyclopentanophenathrene derivatives and processes
ExpiredGB661805A
(en)