K. Suzuki et al., 2-ARYLMETHYL-1,4-BENZOQUINONES .2. NOVEL INHIBITORS OF PLATELET-AGGREGATION - SYNTHESIS AND PHARMACOLOGICAL EVALUATION, Chemical and Pharmaceutical Bulletin, 45(4), 1997, pp. 668-674
Two new series of 2-arylmethyl-1,4-benzoquinones (2 and 3) were synthe
sized for evaluation of their pharmacological activities, These compou
nds showed significant inhibition of platelet aggregation and some of
them possessed a protective effect against endothelial cell injury, St
ructure-activity relationship studies indicated that 2b, 2d and 3b are
potent inhibitors of platelet aggregation induced by arachidonic acid
(A.A) with an IC50 in the range of 1-10 mu g/ml. Among them, 3b showe
d a significant inhibitory activity against endothelial cell injury ca
used by hydrogen peroxide (H2O2) at 1 mu m.