作 者 :张起风;罗士德;王惠英
期 刊 :云南植物研究 1998年 20卷 03期 页码:1-3
关键词:20R 24R-表-25-达玛烷烯-3-酮;16β一羟基达玛烷-20(22);25-二烯-3-酮;
Keywords:Dysoxylum hongkongense, 26 - hydroxy - dammara,
摘 要 :从楝科植物香港坚木(Dysoxylum hongkongense(Tufch.)Merr)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),163一羟基达玛烷-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,2Is,25-三羟基-2Is,23R-表-9(11)-达玛烷烯(8)。
Abstract: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 hydroxy -dammaranone and cycloart -23 -ene -3 (3, 25 -diol were isolated from the leaves of Dysoxylum hongkongense.The proposed structures were established by spectral analysis and comparisons with closely related compounds.