New phenylpropanoids and in vitro α-glucosidase inhibitors from Balanophora japonica.Planta Med. 2011 Mar; 77(5):477-81.PM
Five new phenylpropanoids, named balajaponins A-E (1-5), were isolated from Balanophora japonica, along with 24 known compounds. Among them, three hydrolysable tannins (6-8) showed specific in vitro α-glucosidase inhibition, with IC₅₀ values in the range of 1-4 µM. Kinetic analysis revealed that they all acted in a noncompetitive mode.