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Paper | Regular issue | Vol 26, No. 5, 1987, pp.1251-1255
Published online, 1st January, 1970
DOI: 10.3987/R-1987-05-1251
Jamtine-N-oxide — A New Isoquinoline Alkaloid from Cocculus hirsutus

Viqar Uddin Ahmad, Atta-ur-Rahman, Tahir Rasheed, and Habib-ur-Rehman

*H. E. J. Postgraduate Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan


A new isoquinoline alkaloid, jamtine-N-oxide has been isolated from Cocculus hirsutus. Its structure has been assigned as C20H25NO5 (1) on the basis of pectral studies. Its stereochemistry has been determined by homonuclear 2D 1H-NMR (COSY-45, J-resolved, NOESY) and 13C-NMR assignments made by GASPE experiments.