Process for the production of 2-oxa-3-one androstane...

Details Process for the production of 2-oxa-3-one androstane... Process for the production of 2-oxa-3-one androstane...

2007-11-20

2007-11-20

Badio, Barbara P. (Department: 1617)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

10779519

ABSTRACT:
The present invention relates to processes for the production of 2-oxa-3-one androstane derivatives. The processes comprise reacting a 3-one androstane derivative with ozone to form a 2-oxa-3-one androstane derivative.

REFERENCES:
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patent: 6583298 (2003-06-01), Santa et al.
patent: 2003/0032817 (2003-02-01), Cabaj et al.
Koizumi et al., “Antiandrogen, IV. C-17 spiro 2-oxasteroids.”, Chem. Pharm. Bull., vol. 44(11), pp. 2162-2164, 1996.
Rasmusson et al., “Azasteroids as inhibitors of rat prostatic 5alpha-reductase.” J. Med. Chem., vol. 27, pp. 16901701, 1984.

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