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
GB17639/56A
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.)
Merck and Co Inc
Original Assignee
Merck and Co Inc
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 Merck and Co IncfiledCriticalMerck and Co Inc
Publication of GB764327ApublicationCriticalpatent/GB764327A/en
C07J9/00—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07J—STEROIDS
C07J75/00—Processes for the preparation of steroids in general
Abstract
The invention comprises 3-acetoxy-11-keto-bisnorcholanic acid and the methyl ester thereof, and the preparation of the acid by treating 3 - acetoxy - 11 - keto - D 22 - ergostene with ozone, and oxidizing the resulting ozonide with chromic acid, and when the methyl ester is required, the acid is esterified with diazomethane. One detailed example is given.
GB17639/56A1951-03-101952-03-03Compounds of the cyclopentanopolyhydrophenanthrene series and processes for preparing the same
ExpiredGB764327A
(en)