WALTHAM, Mass.--(BUSINESS WIRE)--Oscient Pharmaceuticals Corporation (Nasdaq: OSCI) has granted the commercialization rights to FACTIVE(R) (gemifloxacin mesylate) tablets in Europe to Menarini Group, a leading European pharmaceutical company based in Italy. Menarini, with broad sales and marketing coverage throughout Europe, has the fourth largest pharmaceutical sales force in Europe and is second largest in terms of calls to primary care physicians.