标题青花蒿叶中的新三萜类化合物

Nam-Cheol Kim, Darrick S. H. L. Kim, A. Kinghorn
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引用次数: 22

摘要

从Abrus precatorius叶片的醇溶性酸水解提取物中分离到3个新的(1-3)三萜和1个已知的(4)三萜。通过二维核磁共振等波谱技术鉴定其结构为(20 S,22 S)-3 g,22-二羟基葫芦-5(10),24-二烯-26,29-二酸i -内酯(1),3- O -[6'-甲基-g -d -葡萄糖醛酸-葡萄糖醛酸甲酯]-3 g,22 g -二羟基烯-12-烯-29-葡萄糖醛酸甲酯(2),3- O -g -d -葡萄糖醛酸-葡萄糖醛酸甲酯(3)和槐二醇(4)。
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New Triterpenoids from the Leaves of Abrus Precatorius
Three new ( 1-3 ) triterpenoids and one known ( 4 ) triterpenoid were isolated from an acid hydrolyzed methanol-soluble extract of the leaves of Abrus precatorius . Their structures were identified as (20 S ,22 S )-3 g ,22-dihydroxycucurbita-5(10),24-diene-26,29-dioic acid i -lactone ( 1 ), 3- O -[6'-methyl- g - d -glucuronopyranosyl]-3 g ,22 g -dihydroxyolean-12-en-29-oic acid methyl ester ( 2 ), 3- O - g - d -glucuronopyranosylsophoradiol methyl ester ( 3 ), and sophoradiol ( 4 ) by spectroscopic techniques including 2D NMR.
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