Copyright © 1993 Published by Elsevier Science Ltd. All rights reserved.
Received 12 March 1993;
Two novel alkaloids, 2-(12-aminotridecyl)-pyrrolidine and its 1-(2-hydroxyethyl) derivative, are characterized from extracts of adult Mexican bean beetles. These pyrrolidines, together with a previously identified homotropane alkaloid, euphococcinine, account for 90% of the alkaloids present in this beetle. A number of piperidine derivatives are also identified as minor components. The total mixture represents the most complex bouquet of alkaloids reported hitherto from any coccinellid beetle.
Several new alkaloids, including 2-(12-aminotridecyl)-pyrrolidine (G) and its l-(2- hydroxyethyl) derivative (I), are characterized from extracts of adult Mexican bean beetles.
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