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Two bis-indole alkaloids from leaves of Ervatamia polyneura

✍ Scribed by Pascale Clivio; Dominique Guillaume; Joseph Vercauteren; Bernard Richard; Jean-Marc Nuzillard; Monique Zèches-Hanrot; Louisette Le Men-Olivier

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
485 KB
Volume
40
Category
Article
ISSN
0031-9422

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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.

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## Abstract Three new ervatamine‐type indole alkaloids, 6‐oxo‐16,20‐episilicine (**1**), 16,20‐episilicine (**2**), and 6,16‐didehydro‐20‐episilicine (**6**), along with seven known alkaloids, were isolated from the whole plants of __Ervatamia officinalis.__ Their structures were elucidated by spec