Anne Whitaker has been appointed president and chief executive officer of Synta Pharmaceuticals Corp., and will serve on the board of directors, effective September 2. Ms. Whitaker has more than 20 years of experience in the pharmaceutical industry, having held executive roles at GlaxoSmithKline and Sanofi.   Most recently, Ms. Whitaker served as president, North America Pharmaceuticals at Sanofi, where she oversaw all pharmaceutical and consumer healthcare operations within the region, includin...