Four new norlignan glycoside isomers from the twigs of Cephalotaxus oliveri Mast. |
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| Authors: | Fan-Cheng Meng Hui Liu Xiao-Jun Huang Yu Chang Dai Ren Li-Gen Lin Qing-Qian Zeng Qing-Wen Zhang |
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| Institution: | 1. State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao;2. JNU-HKUST Joint Laboratory for Neuroscience & Innovative Drug Research, Jinan University, Guangzhou 510632, PR China;3. Guangdong Research Institute of Traditional Chinese Medicine, Guangzhou 510520, PR China |
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| Abstract: | Four novel isomers of norlignan glycoside were isolated from Cephalotaxus oliveri Mast.. Their structures were elucidated as 3S-4″-O-β-d-glucopyranosylnyasol 1, 3S-4′-O-β-d-glucopyranosylnyasol 2, 3S-4″-O-β-d-glucopyranosylhinokiresinol 3, 3S-4′-O-β-d-glucopyranosylhinokiresinol 4 by extensive spectroscopic methods including 1D and 2D NMR experiments (1H, 13C, DEPT, 1H–1H COSY, HSQC, HMBC, ROESY) along with HR-ESIMS and comparison to literature data. Their absolute configurations were elucidated through CD spectra coupled with the quantum chemical CD calculations. |
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| Keywords: | Corresponding author at: Tel : +853 8822 4879 fax: +853 2884 1358 |
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