Acta Cryst. (2009). E65, o2113  [ doi:10.1107/S1600536809030669 ]

Methyl 3-dehydroxy-3-oxoursolate

K. Awang, N. H. Abdullah, N. F. Thomas and S. W. Ng

Abstract: Four of the five six-membered rings of the title pentacylic triterpene, C₃₁H₄₈O₃, adopt chair conformations; the fifth, which has a C=C double bond, adopts an approximate envelope conformation.

Online 8 August 2009

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