期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 68, 期 21, 页码 7961-7966出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo034804j
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Two novel major alkaloids, deoxycalyciphylline B (1) and deoxyisocalyciphylline B (2) with a unique fused hexacyclic skeleton, together with a quite recently reported alkaloid calyciphylline B (3), were isolated from the stem of Daphniphyllum subverticillatum. Their structures were established by spectral methods and chemical evidence, especially 2D NMR techniques. The structure of 1 was further confirmed by a single-crystal X-ray diffraction determination.
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