Process for production of steroid compound

Details Process for production of steroid compound Process for production of steroid compound

2011-05-03

2011-05-03

Badio, Barbara P (Department: 1628)

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

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

Reexamination Certificate

active

07935838

ABSTRACT:
The present invention relates to a process for production of a steroid compound having a partial structure represented by Formula (2) by oxidizing a steroid compound having a partial structure represented by Formula (1), without the need of any special apparatus, in a safe and economical manner, with less adverse affect on environment, in a simple and high efficient manner. Specifically, the invention relates to a process for producing a steroid compound having a partial structure of ring A and ring B of the steroid skeleton represented by Formula (2):wherein R represents a hydrogen atom or C1-6alkyl group,comprising the step of reacting a steroid compound having a partial structure of ring A and ring B of the steroid skeleton represented by Formula (1):wherein R is the same as above;with a catalytic amount of copper halide in the presence of oxygen.

REFERENCES:
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patent: 2005/0090477 (2005-04-01), Zorn et al.
patent: 2001-525855 (2001-12-01), None
Groh, et al; “Preparation of 3-ketodesogestrel metabolites by microbial transformation and chemical synthesis.” Steriods, 1997, vol. 62, No. 5, pp. 437-443.
Rao, et al; “Preparative chemical methods for aromatization of 19-nor-▴{circumflex over ())}{circumflex over (})}4-3-oxosteroids.” Steroids, 1994, vol. 59, No. 11, pp. 621 to 627.

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