发明授权
US5399727A Preparation of .DELTA..sup.9(11) steroid 失效
DELTA 9(11)类固醇的制备

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