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Synthetic approach to grayanotoxins and asebotoxins: a new construction of the a-homograyanotoxane ring system
Authors:Tetsuji Kametani  Hiroo Matsumoto  Toshio Honda  Keiichiro Fukumoto
Affiliation:Hoshi College of Pharmacy, Ebara 2-4-41, Shinagawaku, Tokyo142, Japan;Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980, Japan
Abstract:The tetracyclic compounds ~3 and ~4 corresponding to A-homograyanotoxane system were synthesised by a thermolysis of the benzocyclobutene ~8, followed by a Wagner-Meerwein rearrangement of the kaurane type of compounds ~15 and ~16.
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