6Kittisak L, Sukanya D A, Vichien J, et al. Antimalarials from Stephania venosa, Prismatomeris sessiliflora, Diospyros Montana and Murraya siamensis. Planta Med, 1999,65(8):754.
8Almeida W P, Costa P R R. Orthobromodiphenylmethane derivatives as startiny materials for the total synthesis of anthraquinone. Synth Commun, 1996,26:4507.