Chemical and Pharmaceutical Bulletin 2010-Jul
Two new aspidosperma indole alkaloids from Yunnan Kopsia arborea.
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Two new indole alkaloids, kopsiyunnanines G (1) and H (2), possessing the Aspidosperma skeleton were isolated from the aerial part of Yunnan Kopsia arborea BLUME (Apocynaceae). Their structures and stereochemistry were elucidated by means of MS and 2D NMR analyses.
