Methanesulfonate salts of abiraterone-3-esters and recovery...

Details Methanesulfonate salts of abiraterone-3-esters and recovery... Methanesulfonate salts of abiraterone-3-esters and recovery...

2010-02-04

2011-12-13

Morris, Patricia (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

08076474

ABSTRACT:
A salt of a compound of formula (I) may be made with methanesulfonic acid. The salt and salts with other acids may be prepared by recovering from methyl tert-butyl ether (MTBE).

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Potter, G. A., et al; “A convenient, large-scale synthesis of abiraterone acetate 3.beta.-acetoxy-17-(3-pyridyl)androsta-5,16-diene!, a potential new drug for the treatment of prostate cancer”;Organic Preparations and Procedures Int'l; vol. 29(1); pp. 123-128; (1997) XP008056111.
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