LEXINGTON, Mass.--(BUSINESS WIRE)--Synta Pharmaceuticals Corp., (NASDAQ: SNTA) a biopharmaceutical company focused on discovering, developing, and commercializing small molecule drugs to treat severe medical conditions, today announced that the first patient has been treated in a Phase 1 clinical study of its novel heat shock protein 90 (Hsp90) inhibitor, STA-9090. STA-9090 is a synthetic, small molecule Hsp90 inhibitor with a novel chemical structure that is unrelated to the Hsp90 inhibitor geldanamycin or its family of related compounds, such as 17-AAG.