Bocar Mamadou, Jossang Akino, Bodo Bernard
Laboratoire de Chimie des Substances Naturelles, ESA 8041, CNRS, Muséum National d'Histoire Naturelle, 63 Rue Buffon 75005 Paris, France.
J Nat Prod. 2003 Jan;66(1):152-4. doi: 10.1021/np0203178.
Four new cephalotaxus alkaloids, cephalotaxine alpha-N-oxide (1), cephalotaxine beta-N-oxide (2), 11-beta-hydroxycephalotaxine beta-N-oxide (3), and isocephalotaxine (4), were isolated, together with several known alkaloids from an EtOAc extract of the fruits of Cephalotaxus fortunei. The structures were determined by spectral analysis including mass spectrometry and 2D NMR. Compounds 1, 2, 3, and 4 displayed cytotoxicity against nasopharynx KB cells with IC50 values of 30, 14, 31, and 15 micro g/mL, respectively.
从中国粗榧果实的乙酸乙酯提取物中分离出四种新的三尖杉生物碱,即三尖杉碱α-N-氧化物(1)、三尖杉碱β-N-氧化物(2)、11-β-羟基三尖杉碱β-N-氧化物(3)和异三尖杉碱(4),以及几种已知生物碱。通过包括质谱和二维核磁共振在内的光谱分析确定了其结构。化合物1、2、3和4对鼻咽癌KB细胞显示出细胞毒性,IC50值分别为30、14、31和15μg/mL。