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.
出处
《云南植物研究》
CSCD
1998年第3期362-368,共7页
Acta Botanica Yunnanica
关键词
三萜
香港坚木
楝科
达玛烷型三萜
Dysoxylum hongkongense, Meliaceae, dammarane triterpenoids, (20R, 24R)-epoxy-25-dammaren-3-one, 16 β-hydroxy-dammara-20 (22), 25-dien-3-one, 26-hydroxy-dammara-20, 24-dien-3-one, 7α,21S, 25-trihydroxy-3β-acetoxy-21S, 23R-epoxy-9(11)-en-dammarane.