STUDIES ON THE CONSTITUENTS OF QING-HAO (ARTEMISIA ANNUA L.)

From Artemisia annua L., five crystalline compounds have been isolated besides arteannuin. These have been identified as scopoletin, coumarin, quercetagetin-6,7,3',4'-tetramethyl ether, quercetagetin-6,7,4'-trimethyl ether and artemetin by spectral data (UV, IR, NMR, MS) and physico-chemical constants.Coumarin, quercetagetin-6,7,4'-trimethyl ether and artemetin have been isolated for the first time from this drug.