Two new chalcones, 3-hydroxy-3',4'-dimethoxychalcone (1) and 3,2'-dihydroxy-3',4'-dimethoxychalcone (2),were isolated from the flowers of Clerodendrum inerme (L.) Gaertn together with two known flavones, 7-O-methylwogonin (3) and eucalyptin (4). The structures of the new compounds 1 and 2 have been established by extensive 2D-NMR and ESI-TOFMS studies.
机构:
Hanoi Univ Sci & Technol, Sch Chem Engn, 1 Dai Co Viet, Hanoi 10000, VietnamHanoi Univ Sci & Technol, Sch Chem Engn, 1 Dai Co Viet, Hanoi 10000, Vietnam
Tran Thi Minh
Nguyen Thi Minh Thuong
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机构:
Hanoi Univ Sci & Technol, Sch Chem Engn, 1 Dai Co Viet, Hanoi 10000, VietnamHanoi Univ Sci & Technol, Sch Chem Engn, 1 Dai Co Viet, Hanoi 10000, Vietnam