香港坚木中的达玛烷型三萜  

Dammarane Triterpenoids from Dysoxylum hongkongense

作　　者：张起凤[1] 罗士德[1] 王惠英[1] 

机构地区：[1]中国科学院昆明植物研究所植物化学开放研究室

出　　处：《云南植物研究》1998年第3期362-368,共7页Acta Botanica Yunnanica

摘　　要：从楝科植物香港坚木（Ｄｙｓｏｘｙｌｕｍｈｏｎｇｋｏｎｇｅｎｓｅ（Ｔｕｆｃｈ．）Ｍｅｒ）的树叶中分得了４个新的达玛烷型三萜，基于详细的光谱分析及与同类化合物的光谱数据比较鉴定了其结构，分别命名为：２０Ｒ，２４Ｒ－表－２５－达玛烷烯－３－酮（３），１６β－羟基达玛烷－２０（２２），２５－二烯－３－酮（４），２６－羟基达玛烷－２０，２４－二烯－３－酮（５）和３β－乙酰基－７α，２１Ｓ，２５－三羟基－２１Ｓ，２３Ｒ－表－９（１１）－达玛烷烯（８）。Four new dammarane type triterpenoids, named (20R, 24R)-epoxy-25-dammaren-3-one; 16 β-hydroxy-dammara-20(22), 25-dien-3-one(4); 26-hydroxy-dammara-20, 24-dien-3-one(5); 7α,21S, 25-trihydroxy-3β-acetoxy-21S, 23R-epoxy-9(11)-en-dammarane(8) together with four known compounds, ergosterol peroxide, dammara-20, 24-dien-3 β-ol, 20-R-form hydroxydammaranone and cycloart-23-ene-3 β, 25-diol were isolated from the leaves of Dysoxylum hongkongense. The proposed structures were established by spectral analysis and comparisons with closely related compounds.

关 键 词：三萜 香港坚木 楝科 达玛烷型三萜 

分 类 号：Q946.851[生物学—植物学]