NEW HAVEN, Conn., Nov. 21, 2011 (GLOBE NEWSWIRE) -- Achillion Pharmaceuticals, Inc. (Nasdaq:ACHN - News), a leader in the discovery and development of small molecule drugs to combat the most challenging infectious diseases, today announced that members of the Company’s executive team will present at the upcoming 23rd Annual Piper Jaffray Health Care Conference on Wednesday, November 30, 2011 at 11:00 a.m. EST at The New York Palace Hotel, in New York, NY.