Steroidal C-17 allene acetates and their 17(20)-unsaturated C-21 aldehyde derivatives.
D000447:Aldehydes; D000475:Alkenes; D011278:Pregnanes / Q000138:chemical synthesis*; D013057:Spectrum Analysis; D013237:Stereoisomerism
D000447:Aldehydes; D000475:Alkenes; D011278:Pregnanes