Tocopheryl acetates from the pupal exocrine secretion of the squash beetle,Epilachna borealis (Coccinellidae) |
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| Authors: | A B Attygalle S R Smedley T Eisner J Meinwald |
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| Institution: | (1) Department of Chemistry, Cornell University, 14853-1301 Ithaca, New York, USA;(2) Section of Neurobiology and Behavior, Cornell University, 14853-1301 Ithaca, New York, USA |
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| Abstract: | The oily droplets on the pupal integumental hairs of the squash beetleEpilachna borealis contain a mixture of  -,  -,  -, and  -tocopheryl acetates as major constituents. In addition, the secretion contains a number of minor components that appear to be dehydrocongeners of the major components. This is the first report of the occurrence of acetate esters of any tocopherol in nature.This is paper No. 132 in the series Defense Mechanisms of Arthropods; No. 131 is Shi et al., Tetrahedron52 (1996) 6859. |
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| Keywords: | Vitamin E acetate tocopherol beetle Coccinellidae defensive secretion |
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