1237-1241Phytochemical
investigation of the methanolic extract of the stem bark of Berberis aristata (Berberidaceae) yields
three new isoquinoline alkaloids characterized as
14β-hydroxy-15β-(3′,4′-dimethoxyphenyl ether)-5,6-methylenedioxy-9(10),11(16)-tetradehydroberbinium 1,
14β-hydroxy-15β-(3′,4′-dimethoxybenzoate)-5,6-methylenedioxy-9(10),11(16)-tetradehydro-
17-one-berbinium 2, and 14β-hydroxy-15β-(3′,4′-dimethoxybenzoate)-5,6-methylenedioxy-9(10),11(16)-tetradehydro-1-one
berbinium 3. The structures of these
phytoconstituents have been elucidated on the basis of spectral data analysis
and chemical reactions