Alkaloids from the Leaves and Stems of Daphniphyllum calycinum
2009
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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