Chemical transformation of protoberberines. XII A novel synthesis of rhoeadine alkaloids. An alternative synthesis of a key intermediate, benzindenoazepine, for a synthesis of (.+-.)-cis-alpinigenine and (.+-.)-cis-alpinine from palmatine.
Chemical transformation of protoberberines. XII A novel synthesis of rhoeadine alkaloids. An alternative synthesis of a key intermediate, benzindenoazepine, for a synthesis of (.+-.)-cis-alpinigenine and (.+-.)-cis-alpinine from palmatine.
61. A new synthesis of 3 : 11-dimethoxyoxyprotoberberine, and syntheses of 2 : 3-methylenedioxy-11 : 12-dimethoxyoxyprotoberberine and 2 : 3 : 11 : 12-tetramethoxyoxyprotoberberine