Alkaloids from the Leaves and Stems of Daphniphyllum calycinum |
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| Authors: | Zha‐Jun Zhan Gui‐Wei Rao Xiao‐Rong Hou Cheng‐Ping Li Wei‐Guang Shan |
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| Institution: | 1. College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P.?R. China, (phone: +86‐571‐88871030);2. College of Biology and Environment Engineering, Zhejiang Shuren University, Hangzhou 310015, P.?R. China |
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| Abstract: | One new alkaloid, named caldaphnidine H ( 1 ), together with eight known ones, daphnioldhanin G ( 2a ), methyl homosecodaphniphyllate ( 3 ), daphnezomine M ( 4 ), daphniyunine A ( 5 ), calyciphylline A ( 6 ), deoxycalyciphylline B ( 7 ), deoxyisocalyciphylline B ( 8 ), and calyciphylline B ( 9 ) was isolated from the leaves and stems of Daphniphyllum calycinum. The structure of 1 was established by spectral methods, especially 2D‐NMR techniques. The structure of daphnioldhanin G ( 2b ) reported previously was revised to 2a mainly by single‐crystal X‐ray diffraction and spectral analysis. |
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| Keywords: | Daphniphyllum calycinum Alkaloids Caldaphnidine H Daphnioldhanin G X‐Ray crystallography |
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