简介内容:Sydowinin B is a xanthone polyketide that has been found inA. sydowiiand has immunosuppressant inhibits LPS- or concanavalin A-induced proliferation of isolated mouse splenic lymphocytes (IC50s = and μg/ml, respectively).2Sydowinin B inhibits superoxide generation in, and elastase release from, isolated human neutrophils induced by cytochalasin B and N-Formyl-Met-Leu-Phe with IC50values of and μM,