Enantioselective Syntheses of 1-Carbacephalosporins from Chemoenzymically Derived β-Hydroxy-α-Amino Acids: Applications to the Total Synthesis of Carbacephem Antibiotic Loracarbef
作者:Billy G Jackson、Steve W Pedersen、Jack W Fisher、Jerry W Misner、John P Gardner、Michael A Staszak、Christopher Doecke、John Rizzo、James Aikins、Eugene Farkas、Kristina L Trinkle、Jeffrey Vicenzi、Matt Reinhard、Eugene P Kroeff、Chris A Higginbotham、R.J Gazak、Tony Y Zhang
DOI:10.1016/s0040-4020(00)00416-6
日期:2000.7
Serine hydroxymethyltransferase (SHMT) derived from recombinant E. coli was found to be able to catalyze the condensation between glycine and 4-pentenaldehyde, affording enantiopure l-erythro-2-amino-3-hydroxy-6-heptenoic acid (AHHA) in high yield and throughput. Conversion of this chiral intermediate of biosynthetic origin to the oral carbacephalosporin antibiotic loracarbef (Lorabid®) via β-lactam