An Efficient Large-Scale Process for the Human Leukocyte Elastase Inhibitor, DMP 777<sup>1</sup>
作者:Louis Storace、Luigi Anzalone、Pat N. Confalone、Wayne P. Davis、Joseph M. Fortunak、Mark Giangiordano、James J. Haley、Kenneth Kamholz、Hui-Yin Li、Philip Ma、William A. Nugent、Rodney L. Parsons、Patrick J. Sheeran、Charlotte E. Silverman、Robert E. Waltermire、Christopher C. Wood
DOI:10.1021/op015507o
日期:2002.1.1
This report describes a new convergent, selective, and economical synthesis of DMP 777,1 ending with the coupling of the chiral β-lactam half of the molecule (1) to the chiral amine as the isocyanate (2). Other steps involve the coupling of the β-lactam 3 to the phenolic moiety under phase-transfer conditions, followed by resolution of the resulting piperazine derivative using a chiral acid, and recycling
本报告描述了 DMP 777,1 的一种新的收敛、选择性和经济合成方法,最终将分子的一半手性 β-内酰胺 (1) 与作为异氰酸酯 (2) 的手性胺偶联。其他步骤包括在相转移条件下将 β-内酰胺 3 与酚部分偶联,然后使用手性酸拆分所得哌嗪衍生物,并且也在相转移条件下回收不需要的对映异构体。手性胺 4 由 (R)-α-甲基苄胺和相应的苯丁酮有效制备。