内-15α-[(2-甲氧基-苄氧基)甲基]-16-氧代贝壳杉烷-20-酸乙酯
Ethyl ent-15α-[(2-meth-oxy-benz-yloxy)meth-yl]-16-oxobeyeran-20-oate.
作者信息
Wu Ya, Wang Xia, Gong Jian-Hong, Wei Chang-Yong, Tao Jing-Chao
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2012 Feb 1;68(Pt 2):o495. doi: 10.1107/S1600536812001833. Epub 2012 Jan 21.
Abstract
The title compound, C(31)H(44)O(5), was synthesized from isostev-iol (systematic name: ent-16-ketobeyeran-19-oic acid). In the mol-ecule, the three six-membered rings adopt chair conformations and the stereochemistry of the A/B and B/C ring junctions are trans. The five-membered ring D adopts an envelope conformation with the methyl-ene C atom as the flap.
摘要
标题化合物C(31)H(44)O(5)由异甜菊醇（系统命名：对映-16-氧代贝壳杉烷-19-酸）合成。在分子中，三个六元环呈椅式构象，A/B和B/C环连接的立体化学为反式。五元环D呈信封式构象，以亚甲基C原子为翻盖。
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