title: N-tert-Butyl-5α-androstane-17β-carboxamide.
abstract: The title compound, C(24)H(41)NO, is a new derivative of the anti-HIV steroid 17β-(N-tert-butyl-amino-carbon-yl)androst-4-en-3-one. There are four rings in the structure and these are trans-fused. The three six-membered rings exhibit chair conformations, while the five-membered ring adopts an envelope conformation.
authors.forename: Xin
authors.initials: X
authors.lastname: Yan
authors.forename: Shiqing
authors.initials: S
authors.lastname: Xu
authors.forename: Jingmei
authors.initials: J
authors.lastname: Wang
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.forename: Peng
authors.initials: P
authors.lastname: Xia