Garcinia multiflora (Guttiferae) Champ. is a small evergreen tree, distributed in South China, Hong Kong, and Taiwan. Xanthones [1-4], biflavonoids [5], benzophenones [6], and their derivatives are widely distributed in plants of the genus Garcinia. Many of these compounds exhibit cytotoxic [1,2,6], anti-inflammatory [3], antitubercular [4], anti-HIV [5], and antioxidant [6] activities. In our studies on the anti-inflammatory constituents of Formosan plants, many species have been screened for in vitro anti-inflammatory activity, and G. multiflora has been found to be one of the active species. Five new benzophenone derivatives, 13,14-didehydoxyisogarcinol (1), garcimultiflorone A (2), garcimultiflorone B (3), 13-hydroxygarcimultiflorone B (4), and garcimultiflorone C (5), and seven known compounds (6-12) have been isolated and identified from the fruits of G. multiflora. 13,14-Didehydoxyisogarcinol (1), garcimulti-florone A (2), garcimultiflorone B (3), and 13-hydroxygarcimultiflorone B (4) exhibited inhibition with an IC50 range of 0.11-5.58 µM on superoxide anion generation and elastase release by human neutrophils in response to fMet-Leu-Phe/cytochalasin B (fMLP/CB).This symposium describes the structural elucidation of 1-5 and the anti-inflammatory activities of the isolates.