Nisar Hussain, Habib-ur-Rehman, M. Parvez
Feb 13, 2010
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Journal
Acta Crystallographica Section E: Structure Reports Online
Abstract
The title compound [systematic name: 17-(5,6-dimethylhept-6-en-2-yl)-4,4,10,13,14-pentamethyl-1,5,6,10,11,12,13,15,16,17-decahydro-2H-cyclopenta[α]phenanthren-3(4H,9H,14H)-one], C31H50O, is a triterpenoid which was isolated from Skimmia laureola. The three six-membered rings adopt chair, slightly distorted half-chair and distorted boat conformations, and the five-membered ring is in an envelope conformation. All the rings are trans fused. In the crystal structure, there is a weak C—H⋯O hydrogen bond.