Further isoquinoline alkaloids form arthrocnemum glaucum

Two isoquinoline alkaloids, [R]-[+]-1-methyl-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline [[R]-[+]-salsolidine] and 1-methyl-6,7-dimethoxyisoquinoline [nigellimine], were isolated from the aerial parts of Arthrocnemum glaucum. Their structures were determined by spectroscopic methods [UV, IR, MS, 1D, and 2D NMR]. This is the first report of the isolation of these two alkaloids from this species and the third report of the isolation of nigellimine from a natural source