Microtropins J-P: 6’-O-(2”<i>S</i>,3”<i>R</i>)-2”-Ethyl-2”,3”-Dihydroxybutyrates of Phenolic Alcohol <i>&#223</i>-D-Glucopyranosides from the Branches of <i>Microtropis japonica</i>

• 作者: Hideaki Otsuka Katsuyoshi Matsunami Sachiko Sugimoto Yoshio Takeda Yuka Uemura
• 来源期刊: 美国植物学期刊(英文)
• 学科: 医学
• 关键词: Microtropis JAPONICA CELASTRACEAE Microtropin (2S 3R)-2-Ethyl-2 3-Dihydroxybutyrate
• 年，卷（期）: mgzwxqkyw_2013,（10）
• 页码范围: 1954-1959
• 页数: 6页
• 分类号: R28

摘要

From the branches of Microtropis japonica (Celastraceae), seven phenolic alcohol glucosides, named microtropins J-P (1-7), were isolated. The 6-position of glucose was esterified with 2-ethyl-2,3-dihydroxybutyric acid. Microtropin K (2) was hydrolyzed under a mild basic condition to give methyl (2S,3R)-2-ethyl-2,3-dihydroxybutyrate, whose absolute structure was determined by the comparison of NMR data and the optical rotation value with that reported.