Journal
TETRAHEDRON
Volume 58, Issue 33, Pages 6705-6712Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4020(02)00678-6
Keywords
Stemona tuberosa; neotuberostemonol; neotuberostemoninol; neomberostemonine; hydrogen bonds
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Two new stenine-type alkaloids, neotuberostemonol (3) and neotuberostemoninol (4), along with the known compound neotuberostemonine (2), were isolated from Stemona tuberosa Lour. Their structures were characterized by X-ray crystallography in combination with spectroscopic methods, and their absolute configurations were inferred from the known configuration of tuberostemonine (1). In the crystalline state, weak C-H...O hydrogen bonds play an important role in the molecular packing of 3 and 4. (C) 2002 Elsevier Science Ltd. All rights reserved.
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