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
发现重组大肠杆菌衍生的丝氨酸羟甲基转移酶(SHMT)能够催化甘氨酸和4-戊醛之间的缩合,从而在高浓度下提供对映体纯的1-赤型-2-氨基-3-羟基-6-庚烯酸(AHHA)产量和吞吐量。此手性中间体的生物合成来源的转化为口服抗生素碳头孢菌素劳拉卡帕(Lorabid ®达到)通过β内酰胺形成反应和随后的环化迪克曼。