Phytoconstituents of ; antidiabetic effects and molecular docking studies on alpha-amylase and alpha-glucosidase.

Phytochemical investigation on the bark of plant afforded ten compounds, including six polyketides namely kingianin A , kingianin B , kingianin E , kingianin F , kingianin K and kingianin L , three endiandric acids; kingianic acid A , tsangibeilin B and endiandric acid M , and one sesquiterpene; daibuoxide . All compounds were separated as racemic mixture by recycling high-performance liquid chromatography (RHPLC), except for daibuoxide. Their structures were elucidated by detailed spectroscopic and comparative literature data analysis.