A new acylated N-glycosyl lactam from Aristolochia contorta.

A new acylated glycoside isolated from the roots of Aristolochia contorta (Aristolochiaceae), has been characterized as aristolactam N-(6'-trans-p-coumaroyl)-beta-D-glucopyranoside [2]. Aristolactam-N-beta-D-glucopyanoside [1] was also isolated from the same source. Compound 2 showed relatively significant antibacterial activity against Gram-positive bacteria, based on disc diffusion and dilution methods.