Acta Crystallographica Section E (Jun 2009)
Methyl 3β-methoxycarbonyloxy-4,4-dimethyl-17-oxo-16α-(3-oxobutyl)-16β-carboxylate
Abstract
The title steroid, C29H44O7, is a new androgen derivative and a key intermediate for synthesizing novel anti-HIV steroid agents. There are four trans-fused rings in the structure. The three six-membered rings exhibit chair conformations, while the five-membered ring adopts an envelope conformation.
