Journal of the Chemical Society. Chemical communications p. 1257 - 1258 (1985)
Update date:2022-08-11
Topics:
Hanaoka, Miyoji
Yoshida, Shuji
Mukai, Chisato
13-Methylberberine (6a), dehydrocorudaline (6b), and corysamine (6c), and their tetrahydro derivatives (9a-c) were efficiently synthesised from the corresponding protoberberines (1) through photochemical electrocyclic reaction of 13-methylene-8,14-cycloberbines (3).
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