[EN] PROCESS FOR THE PREPARATION OF PHENYLALANINE ENAMIDE DERIVATIVES<br/>[FR] PROCEDE DE PREPARATION DE DERIVES DE PHENYLALANINE-ENAMIDE
申请人:CELLTECH R&D LTD
公开号:WO2004007428A1
公开(公告)日:2004-01-22
A process for the preparation of a class of phenylalanine enamide derivatives is described formula (1) wherein: Ar1 is an optionally substituted aromatic or heteroaromatic group; L2 is a linker group selected from -N(R4)- [where R4 is a hydrogen atom or an optionally substituted straight or branched C1-6alkyl group], -CON(R4)-, or -S(O)2N(R4)-; R1 is a carboxylic acid (-CO2H) or a derivative or biostere thereof; R2 is a hydrogen atom or a C1-6alkyl group; Rx, Ry and Rz which may be the same or different is each an atom or group -L1(Alk1)n(R3)v; and the salts, solvates, hydrates and N-oxides thereof; which comprises reacting a compound of formula (2): wherein: Qa is a group -N(R4)H; and the salts, solvates, hydrates and N-oxides thereof; with a compound Ar1W wherein W is a group selected from X1 (wherein X1 is a leaving atom or group), -COX2 (wherein X2 is a halogen atom or a -OH group) or -SO2 X3 (in which X3 is a halogen atom).
描述了一种制备苯丙氨酸烯酰胺衍生物类的过程,其化学式为(1)其中:Ar1是一个可选择取代的芳香族或杂芳族基团;L2是从-N(R4)- [其中R4是氢原子或可选择取代的直链或支链C1-6烷基基团],-CON(R4)-或-S(O)2N(R4)-中选择的连接基团;R1是一个羧酸(-CO2H)或其衍生物或生物立体异构体;R2是一个氢原子或一个C1-6烷基基团;Rx、Ry和Rz可以相同也可以不同,每个都是一个原子或基团-L1(Alk1)n(R3)v;以及其盐、溶剂合物、水合物和N-氧化物;所述过程包括将化合物(2)与化合物Ar1W反应,其中:Qa是一个基团-N(R4)H;以及其盐、溶剂合物、水合物和N-氧化物;其中W是从X1(其中X1是一个脱离原子或基团),-COX2(其中X2是卤原子或一个-OH基团)或-SO2X3(其中X3是卤原子)中选择的基团。