Preparation of .DELTA..sup.9(11) steroid

Details Preparation of .DELTA..sup.9(11) steroid Preparation of .DELTA..sup.9(11) steroid

1993-06-02

1995-03-21

Mars, Howard T.

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

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

C07J 300

Patent

active

053997271

ABSTRACT:
A process for the preparation of a compound of the formula ##STR1## comprising reacting a compound of the formula ##STR2## with chlorosulfonic in an organic solvent wherein the reaction is effected at -20.degree. C. to -10.degree. C. and the temperature is then allowed to rise to 0.degree. C. to 5.degree. C.

REFERENCES:
patent: 4127596 (1978-11-01), Beaton et al.
1990 Butterworth Publishers, Steroids, 1990, vol. 55, Mar. (Jacobus N. Batist, et al) The Chemistry of 9-alpha-hydroxysteroids. 3. Methods . . . -3-one (pp. 109-113).

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