[Study on Chemical Constituents of Panzeria alaschanica]

To study the chemical constituents of the ethyl acetate extract from Panzeria alaschanica.

The chemical constituents of ethyl acetate extract from Panzeria alaschanica were isolated and purified by silica gel. Their structures were i- dentified by means of spectra.

Nine compounds were obtained and identified as 7-Methoxy coumarin (1), Isorhamnetin (2), Caf- feic acid (3), 5-Hydroxy-7,3',4'-trimethoxyflavone (4), 5-Hydroxy-7,4'-dimethoxyflavone (5),Kaempferol (6), Isorhamnetin-3-O-β-D- glucoside (7) Kaempferol-3-O-β-D-glucoside (8), and Isorhamnetin-7-O-β-D-glucuronyl-(1-->6)-O-α-L-rhamnoside (9).

Compounds 1-4,6,7 and 9 are isolated from this plant for the first time.