Abstract
Two new compounds, 2α-(p-hydroxycinnamoyl) cineole (2) and (E)-15-nor-16-oxo-8(17),12-labdadiene (4), along with three known compounds, trans-cinnamyl methyl ester (1), 4(15)-cadinene-6,10-diol (3) and isorhamnetin-3-O-β-d-galactosyl-(6→1)-α-l-rhamnoside (5), have been isolated from Alpinia tonkinensis Gangep. Their structures have been elucidated by spectral analysis.
Acknowledgement
This research work was supported by the Teaching and Research Award Program for Outstanding Young Teachers in Higher Education Institutions of MOE, China.