| 摘要 |
Steroids of the 5 alpha -pregnane series possessing a 3 alpha -hydroxy group, a 10-hydrogen atom or methyl group, an 11-oxo group, a 17 alpha -hydrogen atom, a 20-oxo group, and a group of the formula -XR at the 21-position wherein -XR represents -OCOR, -OCOOR, -CCOSR or -OCONHR and R represents (a) a solubilising group containing a basic nitrogen atom, (b) a nitrobenzyl group (c) a lower alkyl group (when X is not -OCO-) or (d) a halogenoalkyl group.
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