Zi Tie-Ying, Zang Zhi-He, Yuan Ming-Yong, Zheng Ling-Li
Acta Crystallogr Sect E Struct Rep Online. 2009 Jan 8;65(Pt 2):o232. doi: 10.1107/S1600536808043687.
The title compound, C(27)H(40)O(4), was obtained from the oxidation of (25R)-3b-hydr-oxy-5a-spiro-stan-12-one (Hecogenin) by Jone's reagent. The mol-ecule contains six alicyclic and heterocyclic rings, all trans-fused, among which four six-membered rings adopt similar chair conformations while two five-membered rings assume an envelope conformation.
标题化合物C(27)H(40)O(4)是通过用琼斯试剂氧化(25R)-3β-羟基-5α-螺甾-12-酮(海柯皂苷元)得到的。该分子含有六个脂环族和杂环,均为反式稠合,其中四个六元环具有相似的椅式构象,而两个五元环呈信封式构象。