Two New ent-Kaurane Diterpenoids from Isodon xerophilus  

作　　者：Ai Jun HOU Hui YANG Bei JIANG Qin Shi ZHAO Yan Ze LIU Zhong Wen LIN Han Dong SUN 

机构地区：[1]Laboratory of Phytochemistry,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650204 [2]Department of Phytochemistry,Henan College of Traditional Chinese Medicine,Zhengzhou 450003

出　　处：《Chinese Chemical Letters》2000年第9期795-798,共4页中国化学快报（英文版）

摘　　要：Two new ent-kaurane diterpenoids, xerophilusin E (1) and xerophilusin F (2), were isolated from the leaves of Isodon xerophilus. Their structures were determined as 3, 20: 7, 20-diepoxy-ent-kaur-16-en-15-one and 7 beta, 14 beta, 20 (R)-trihydroxy-11 beta-acetoxy-7,20-cyclo-ent-kaur-16-en-6, 15-dione, respectively, by spectral methods and X-ray crystallographic analysis.Two new ent-kaurane diterpenoids, xerophilusin E (1) and xerophilusin F (2), were isolated from the leaves of Isodon xerophilus. Their structures were determined as 3, 20: 7, 20-diepoxy-ent-kaur-16-en-15-one and 7 beta, 14 beta, 20 (R)-trihydroxy-11 beta-acetoxy-7,20-cyclo-ent-kaur-16-en-6, 15-dione, respectively, by spectral methods and X-ray crystallographic analysis.

关 键 词：Isodon xerophilus LABIATAE ent-kaurane diterpenoids xerophilusin E xerophilusin F 

分 类 号：O624[理学—有机化学]