Ab. Attygalle et al., AZAMACROLIDES - A FAMILY OF ALKALOIDS FROM THE PUPAL DEFENSIVE SECRETION OF A LADYBIRD BEETLE (EPILACHNA-VARIVESTIS), Proceedings of the National Academy of Sciences of the United Statesof America, 90(11), 1993, pp. 5204-5208
Defensive droplets from glandular hairs of the pupa of the Mexican bea
n beetle, Epilachna varivestis, contain a group of structurally novel
alkaloids, the azamacrolides. The major constituent of this secretion,
epilachnene, is shown to be (5Z)-11-propyl-12-azacyclotetradec-5-en-1
4-olide. The secretion also contains an epilachnadiene and trace amoun
ts of three closely related components.