Bisphosphonate ester 2 is an inhibitor of inflammation, but is devoid
of antiarthritic effects. SAR studies on a series of related bisphosph
onate esters resulted in compounds 6e, 6i, 6j, and 6m, which exhibited
excellent inhibition of an arthritis model, in addition to potent ant
i-inflammatory effects. (C) 1998 Elsevier Science Ltd. All rights rese
rved.