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Two novel indole alkaloids, Kopsiyunnanines A and B, from a Yunnan Kopsia

✍ Scribed by Yuqiu Wu; Mariko Kitajima; Noriyuki Kogure; Rongping Zhang; Hiromitsu Takayama

Publisher
Elsevier Science
Year
2008
Tongue
French
Weight
200 KB
Volume
49
Category
Article
ISSN
0040-4039

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✦ Synopsis

Two novel indole alkaloids having unusual skeletons were isolated from the aerial part of Yunnan Kopsia arborea. Kopsiyunnanine A (1) is a new class of bisindole alkaloid composed of vallesiachotamine (modified Corynanthe-type) and Aspidospermatan-type alkaloids. Kopsiyunnanine B ( 2) is a new Corynanthetype oxindole alkaloid rearranged by D ring rotation.

πŸ“œ SIMILAR VOLUMES

ChemInform Abstract: Two Novel Indole Al
ChemInform Abstract: Two Novel Indole Alkaloids, Kopsiyunnanines A (I) and B (II), from a Yunnan Kopsia.
✍ Yuqiu Wu; Mariko Kitajima; Noriyuki Kogure; Rongping Zhang; Hiromitsu Takayama πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons βš– 20 KB πŸ‘ 2 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a β€œFull Text” option. The original article is trackable v

Flabelliformides A and B, Two Novel Indo
Flabelliformides A and B, Two Novel Indole Alkaloids from Ervatamia flabelliformis
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## Abstract Flabelliformides A (**1**) and B (**2**), containing a novel C~20~ indole core, have been isolated from the stems of __Ervatamia flabelliformis.__ The structures of **1** and **2** were elucidated on the basis of spectral analysis and X‐ray crystallography.