On the platform of this inverted chair glucopyranose-high activity correlation argument, corilagin could have been expected to have a one-digit IC50 value with consequent inhibition potency comparable to those of casuarinin and chebulagic acid. Its relative lesser potency (IC50 = 31.5uM), however, could be accounted for by its conspicuous fewer number of galloy units which, as earlier noted, appeared to exert a considerable general influence.