19-Benzo-yloxy-13,16-seco-ent-beyeran 13,16-lactone.

ABSTRACT: The title compound, C(27)H(34)O(5), a beyerane-type diterpenoid prepared by peroxidation and benzoyl-ation of isosteviol, contains a fused six-membered ring system. The O atoms of the benzoic ester and the lactone are disordered with occupancy ratios of 0.6?(4):0.4?(4) and 0.6?(2):0.4?(2), respectively. Three cyclo-hexane rings have chair conformations, whereas the remaining lactone ring adopts a half-chair conformation.

SUBMITTER: Cai J 

PROVIDER: S-EPMC3050127 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature