Chemical Constituents of the Suspension Cell Cultures of Maytenus hookeri

作     者：鲁春华 张建新 甘烦远 沈月毛 

作者机构：中国科学院昆明植物研究所昆明650204 贵州省中国科学院天然产物化学重点实验室贵阳550002 

出 版 物：《Acta Botanica Sinica》 (Acta Botanica Sinica（植物学报：英文版）)

年 卷 期：2002年第44卷第5期

页      面：603-610页

核心收录：

学科分类：1008[医学-中药学(可授医学、理学学位)] 0710[理学-生物学] 1006[医学-中西医结合] 07[理学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 090102[农学-作物遗传育种] 100602[医学-中西医结合临床] 10[医学] 

基　　金：国家自然科学基金(3 0 0 70 0 0 7) 云南省自然科学基金 (99B0 0 17G)。~~ 

主　　题：Maytenus hookeri Celastraceae suspension cell cultures maytansine 2, 3-diacetoxyl maytenusone 

摘      要：Suspension cell cultures of Maytenus hookeri Loos. (Celastraceae) in SH media were established from the calli induced from the leaves and young steins of M. hookeri on MS media with the supplement of 2 mg/L 2,4-D and 0.1 mg/L KIN (kinetin). Ethyl acetate extract of the cultures showed inhibitory activities against Penicillium avellaneum UC-4376 which was sensitive to maytansinoids. Exhaustive isolation of natural products from a large scale of suspension cell cultures did not yield maytansine instead of affording nine compounds including one novel triterpenoid, named 2, 3-diacetoxyl maytenusone (1), and eight known ones including squalene (2), beta-sitosterol (3), 2 , 3 , 4-triacetyl-sitoindoside I (4), salaspermic acid (5), maytenonic acid (6), 2alpha-hydroxy-maytenonic acid (7), 6, 11,12-trihydroxy-8, 11, 13-abietrien-7-one (8) and 11, 12-dihydroxy-8, 11, 13-abietatrien-7-one (9) elucidated on the basis of 1D and 2D NMR data. The H-1-NMR and C-13-NMR assignments were made for 1, 5, 6 and 7, while the C-13-NMR assignments for 5 and 6 were revised. The chemical results suggested that the suspension cell cultures of M. hookeri did not produce maytansinoids under the reported experiment conditions.