Structures of furanovibsanins A-G from Viburnum awabuki
Structures of furanovibsanins A-G from Viburnum awabuki
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DOI：
10.1016/s0040-4020(02)01330-3
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发表时间：
2002-12-09
期刊：
影响因子：
2.1
通讯作者：
Morisaki, M
中科院分区：
文献类型：
--
作者：
Fukuyama, Y;Kubo, M;Morisaki, M
九种新的七元vibsane型二萜的结构，分别为furanovibsanin A (1)、3-0-methylfuranovibsanin A (2)、furanovibsanin F (3)、furanovibsanin B (4)、7-epi-furanovibsanin B (5)、furanovibsanin C (6)、furanovibsanin D (7)、furanovibsanin E通过对 2D NMR 数据的深入分析以及与先前已知的 vibsanin C 和 E 的 NMR 数据的比较，阐明了从 Viburnum awabuki 叶子中分离的 Furanovibsanin G (9)。它们的结构特征是在 vibsanin C (12) 的 C-4 和 C-5 位上形成呋喃或环状烯醇缩醛环。 (C) 2002 Elsevier Science Ltd. 保留所有权利。
The structures of nine new 7-membered vibsane-type diterpenes named furanovibsanin A (1), 3-0-methylfuranovibsanin A (2), furanovibsanin F (3), furanovibsanin B (4), 7-epi-furanovibsanin B (5), furanovibsanin C (6), furanovibsanin D (7), furanovibsanin E (8), and furanovibsanin G (9), isolated from the leaves of Viburnum awabuki, were elucidated by intensive analyses of 2D NMR data and comparison of NMR data of the previously known vibsanins C and E. Their structures feature in a furan or a cyclic enol acetal ring forming on the C-4 and C-5 positions in vibsanin C (12). (C) 2002 Elsevier Science Ltd. All rights reserved.