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Psylloborine A, a new dimeric alkaloid from a ladybird beetle

✍ Scribed by Frank C. Schröder; Till Tolasch

Book ID
104208851
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
340 KB
Volume
54
Category
Article
ISSN
0040-4020

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✦ Synopsis

A new dimeric alkaloid, psylloborine A (3), was identified from the 22-pointed ladybird beetle Psyllobora vigintiduopunctata (L.). Psylloborine A exhibits an unusual heptacyclic ring system, derived from two azaphenalene units. Structural assignment was based on NMR-spectroscopic methods, using E.COSY experiments for the analysis of the highly complex spin systems.

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