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Total synthesis of the indole alkaloids henrycinol A and B

✍ Scribed by Prasad, Kavirayani R.; Nidhiry, John Eugene; Sridharan, Makuteswaran

Book ID
124129890
Publisher
Elsevier Science
Year
2014
Tongue
French
Weight
475 KB
Volume
70
Category
Article
ISSN
0040-4020

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## Abstract Henrycinols A (**1**) and B (**2**), two novel indole alkaloids, together with three known compounds, (+)‐Δ^14^‐vincamine (**3**), (+)‐16‐epi‐Δ^14^‐vincamine (**4**), and (+)‐isoeburnamine (**5**), were isolated from the roots of __Melodinus henryi__ Craib. Their structures were establi

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The tetrahedrane framework with R=tBu and the octabisvalene framework with R = CH3 presumably form because of steric reasons. Whereas the hydrocarbon 2 is highly strained, the arrangement in 1 is largely strain-free, based on the intermolecular contact distances. With other residues R the occurrenc