title: (22E,24R)-3α,5-Cyclo-5α-ergosta-22-en-6-one.
abstract: In the title mol-ecule, C(28)H(44)O, the two six-membered rings have a chair conformation and the two five-membered rings haveenvelope conformations. The crystal packing exhibits no short inter-molecular contacts. The absolute configuration was assigned to correspond with that of the known chiral centres in a precursor molecule, which remained unchanged during the synthesis of the title compound.
authors.forename: Liu-Qing
authors.initials: LQ
authors.lastname: Sheng
authors.forename: Fang
authors.initials: F
authors.lastname: Zeng
authors.forename: Fei
authors.initials: F
authors.lastname: Chen
authors.forename: Chun-Nian
authors.initials: CN
authors.lastname: Xia