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Paper | Regular issue | Vol 32, No. 8, 1991, pp.1563-1570
Published online, 1st January, 1970
DOI: 10.3987/COM-91-5771
Retro-Diels-Alder Fragmentation of Coumaronochromones and Complete Assignments of 13C Nmr Data for Lupinalbin A and Ayamenin B

Fujinori Hanawa, Satoshi Tahara,** and Junya Mizutani*

*Mizutani Plant Ecochemicals Project, Research Development Corporation of Japan, 3-3-1 Megumino Kita, Eniwa-shi, Hokkaido 061-13, Janan

Abstract

A new retro-Diels-Alder fragmentation pathway for coumaronochromones was found in ei ms, and complete assignments of 13C nmr data for simple coumaronochromones (lupinalbin A and Ayamenin B) were presented.