From the EtOAc extract of the wood of the stems of Taxotrophis ilicifolius (Moraceae), two new secondary metabolites, named taxotrophises A (1) and B (2), were isolated, together with five known compounds (3-7). Their chemical structures have been elucidated by extensive NMR spectroscopic analysis. All isolated compounds have been evaluated for α-glucosidase inhibitory activity. In the present work, compounds 1 and 4 showed the strongest α-glucosidase inhibitory activity with IC50 values of 6.5 and 1.5 μM, respectively, and stronger than that of a positive control, acarbose (IC50; 214.5 μM).
Keywords: Moraceae; Taxotrophis ilicifolius; taxotrophises; α-glucosidase.