Stereoselective total synthesis of Mannopeptimycin analogs

ORGN 69

Sanjeeva R Guppi, sanjeev_ssk@yahoo.com and George A. O'Doherty, george.odoherty@mail.wvu.edu. C. Eugene Bennett Department of Chemistry, West Virginia University, 284 Prospect Street, 217 Clark Hall of Chemistry, WVU, Morgantown, WV 26506
Mannopeptimicins are cyclic hexa-peptides with a disaccharide side chain, which possess potent antibacterial activity against gram-positive bacteria with good activity against multi drug-resistant (MDR) bacteria. The disaccharide fragment of Mannopeptimycin is known to be the key to activity which has been synthesized in 7 steps from tyrosine in 37% overall yield using our de novo approach to carbohydrate synthesis. Herein, we will describe our recent efforts toward the total synthesis of Mannopeptimycin analogues from corresponding amino acids.