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冬凌草中的新对映-贝壳杉烷二萜化合物 总被引:10,自引:0,他引:10
对河南省济源地区产冬凌草[Isodon rubescens(Hemsl.)Hara]再次进行了深入 的研究,从其叶的乙酸乙酯提取物中分离得到了16个化合物,其中1和2为两个新的 7,20-环氧-对映-贝壳杉烷类二萜化合物,其结构通过波谱分析确定为16(S)-羟 甲基-1α,6β,7β,11β-甲羟基-7α,20-环氧-对映-贝壳杉烷-15-酮(1)和 16(R)-羟甲基-1α,6β,7β,14β-四羟基-7α,20-环氧-对映-贝壳杉烷-15- 酮(2),分别命名为冬凌草已素(1)和庚素(2);其余的已知化合物分别鉴定 为lasiodonin(3),冬凌草甲素(oridonin,4),乙素(ponicidin),丙素( rubescensin C),丁素(rubescensin D),牛尾草丙素(rabdoternin C),荛 花香茶菜乙素(wikstroemioidin B),enmenol-1α-O-β-D-glucoside, enmenol,胡麻素(pedalitin),水杨酸,乌索酸,β-谷甾醇和胡萝卜甙。 相似文献
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Diterpenoids from Isodon sculponeatus 总被引:1,自引:0,他引:1
Further investigation on the leaves of Isodon sculponeatus afforded two new ent-kaurane diterpenoids,sculponeatins J and K .Their sturctures were elucidated on the basis of their spectral properties,as well as X-ray crystallographic analysis ,The cytotoxicities of these two new compounds against human tumor cells K562 and T24 were also tested ,and sculponeation J showed significant inhibitory effects with IC50 values less than 1.0 μg/mL。 相似文献
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