| Literature DB >> 19133778 |
Yuqiu Wu1, Mayu Suehiro, Mariko Kitajima, Takeshi Matsuzaki, Shusuke Hashimoto, Masato Nagaoka, Rongping Zhang, Hiromitsu Takayama.
Abstract
Three new rhazinilam-derived alkaloids, kopsiyunnanines C1, C2, and C3, and a new quebrachamine-type alkaloid, kopsiyunnanine D, which possess an unusual methoxymethyl or ethoxymethyl function, were isolated from the aerial parts of Yunnan Kopsia arborea. This is the first report of the presence of these functions in natural alkaloids. The structures and absolute configurations of the alkaloids were determined by spectroscopic methods and confirmed by semisynthesis.Entities:
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Year: 2009 PMID： 19133778 DOI： 10.1021/np800489e
Source DB: PubMed Journal: J Nat Prod ISSN： 0163-3864 Impact factor: 4.050