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Communication | Special issue | Vol 8, No. 1, 1977, pp.175-180
Published online, 1st January, 1970
DOI: 10.3987/S(S)-1977-01-0175
Absolute Stereochemistry of Alangicine: Synthetic Incorporation of Cincholoipon into (+)-Alangicine

Tozo Fujii,* Shigeyuki Yoshifuji, Shinzaburo Minami, Satyesh C. Pakrashi, and Esahak Ali

*Faculty of Pharmaceutical Scicences, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-0934, Japan

Abstract

The chemical correlation of cinchonine (v) with the Alangium alkaloid alangicine, through ethyl cincholoiponate [(+)-VI], lactam acids (-)-IX, (+)-X, tricyclic amino acid (-)-XIV, and amide (-)-XV, unequivocally established the absolute stereochemistry of alangicine as I.