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© Georg Thieme Verlag Stuttgart ˙ New York

Enantioselective Synthesis of Protoberberine Alkaloids via (-)-Sparteine-mediated Asymmetric Condensation-Cyclisation of o-Toluamide Anions with 3,4-Dihydroisoquinolines

Ligong Liu*
Department of Research and Development, Progen Industries Ltd, PO Box 28, Richlands BC, Qld 4077, Australia
Fax: +61(7)3375 6746; e-Mail: ligong.liu@progen.com.au;