Sep-Oct 1999 Synthesis of Novel Quinoxaline-5-Carboxylic Acid Derivatives Brian E. Kornberg*, Sham S. Nikam, and Michael F. Rafferty Department of Medicinal Chemistry, Parke-Davis Pharmaceutical Research Division, Warner-Lambert Co., 2800 Plymouth Road, Ann Arbor, Michigan 48105 Received Januray 30, 1999 This paper describes the synthesis of several new 2,3-dimethoxy-6-methyl-7-nitro-quinoxaline-5-car- boxylic acid derivatives ...