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Isolation and Structure Characterization of a new Bisbenzylisoquinoline Alkaloid, from Cocculus Pendulus

. Shaikh Ziauddin Sultani, Muhammad Shahab Alam, Nusrat Kiran, Zubair Hashmi and Muhammad Aijaz Anwar


Abstract

This paper describes phytochemical studies on aerial part of the Cocculus pendulus, which led to the identification of a new ingredient namely, 1,2-dihydrokurramine (1) along with four reported compounds 1,2-Dehydrokohatine (2), Kohatine (3), and 5¢Hhydroxyapateline (4). Structures of all the Compounds were elucidated by using 1D and 2D NMR and mass spectroscopy. High Resolution Mass Spectroscopy (HRMS) afforded the exact mass to be 534.2160, which corresponded to the formula C33H30N2O5 (calc.534.2154). The mass spectrum exhibited molecular ion peak M+ at m/z 534. The characteristics of M+-212 peak at m/z 322 resulted from double benzylic cleavage.

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