Parab, S.J.; Kapdi, S.G.; Naik, C.G.; Kamat, S.P.
(Journal of Chemical Research. 34(6); 2010; 318-321.)
The unambiguous syntheses of the naturally occurring 5'-bromo-2'-hydroxy-4,4',6'-trimethoxychalcone 1, a constituent of Garcinia nervosa, and its positional isomer 3'-bromo-2'-hydroxy-4,4',6'-trimethoxychalcone 6 are described.