Abstract: A new C - 14 oxygenated taxoid, 14β-hydroxy-baccatin VI (1), together with seven known taxoids, baccatin VI (2), baccatin IV (3), lβ-dehydroxybaccatin IV (4) , taxayunnasin A (5), 2α-deacetyl-2α-benzoyl-13α-acetyltaxayuntin (6), 5α-hydroxy-2a, 7β, 9α, 10β, 13α-pentaacetoxy-4 (20), 11-taxadiene (7) and taxacin (8) were isolated from the ethanolic extract of leaves and stems of Taxus chinensis (Pilg) Rehd. The structures of the compounds were elucidated by spectroscopic tech-niques. The detailed 13C and 1H NMR data of the seven known compounds were measured in acetone- d6,and the NMR data of taxacin (8) were reported for the first time.

Key words: Taxus chinensis

摘要： 从中国红豆杉(Taxus chinensis)枝叶的乙醇提取物中分离得到8个紫杉烷二萜，通过波谱分析分别确定为：14β羟基巴卡亭VI (1)，巴卡亭VI (2)，巴卡亭IV (3),1β去羟基巴卡亭IV (4),云南红豆杉酯甲 (5),2α去乙酰2α苯甲酰基13α乙酰基云南紫杉亭 (6),5α羟基2α,7β,9α,10β,13α五乙酰氧基紫杉4 (20),11二烯 (7)和Taxacin (8)。其中化合物1为新化合物,并报道八个化合物在丙酮中测得的核磁共振信号，化合物8的数据属首次报道。

关键词: 中国红豆杉, 红豆杉科, 紫杉烷二萜, 14β-羟基巴卡亭VI