CONSTITUENTS OF THE SEEDS OF SWIETENIA-MAHAGONI JACQ .1. ISOLATION, STRUCTURES, AND H-1-NUCLEAR AND C-13-NUCLEAR MAGNETIC-RESONANCE SIGNAL ASSIGNMENTS OF NEW TETRANORTRITERPENOIDS RELATED TO SWIETENINE AND SWIETENOLIDE
CONSTITUENTS OF THE SEEDS OF SWIETENIA-MAHAGONI JACQ .1. ISOLATION, STRUCTURES, AND H-1-NUCLEAR AND C-13-NUCLEAR MAGNETIC-RESONANCE SIGNAL ASSIGNMENTS OF NEW TETRANORTRITERPENOIDS RELATED TO SWIETENINE AND SWIETENOLIDE
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DOI：
10.1248/cpb.38.639
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发表时间：
1990-03-01
影响因子：
1.7
通讯作者：
EKIMOTO, H
中科院分区：
文献类型：
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作者：
KADOTA, S;MARPAUNG, L;EKIMOTO, H
从楝科桃花心木（Swietenia mahagoni）的子叶中分离得到18个新的四降三萜化合物。其中8个新化合物，分别为swietenins B，C，D，E，F，3-O-乙酰基swietengland，6-O-乙酰基swietengland，3-O-惕各酰基-6-O-乙酰基swietengland，其结构均经二维核磁共振（2D NMR）技术测定。对10个已知化合物的~ 1H-和~（13）C-NMR谱进行了详细的分析。
Eighteen new tetranortriterpenoids were isolated from the cotyledons of Swietenia mahagoni (Meliaceae) along with ten known tetranortriterpenoids. Among them, the structures of eight new compounds, swietenins B, C, D, E, and F, 3-O-acetylswietenolide, 6-O-acetylswietenolide, and 3-O-tigloyl-6-O-acetylswietenolide, were determined by the use of two-dimensional nuclear magnetic resonance (2D NMR) techniques. Detailed analyses of the 1H- and 13C-NMR spectra of the ten known compounds were also performed.