[EN] PROCESS FOR PREPARING A DIPEPTIDYL PEPTIDASE IV INHIBITOR AND INTERMEDIATES EMPLOYED THEREIN<br/>[FR] PROCEDE DE PREPARATION D'UN INHIBITEUR DE LA DIPEPTIDYL PEPTIDASE IV ET PRODUITS INTERMEDIAIRES UTILISES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2005094323A2
公开(公告)日:2005-10-13
A process is provided for preparing a dipeptidyl peptidase IV inhibitor of the structure (10) wherein (3) is treated with TFAA in isopropyl acetate to protect the tertiary hydroxyl group as a trifluoroacetate group to form (4) (which is a novel intermediate) which is converted to acid chloride compound (5) (which is a novel compound) using Vilsmeier reagent or other chloro reagent and coupled with compound (6) in a heterogeneous mixture of ethyl acetate and aqueous bicarbonate to give compound (7).The N,O-bis(trifluoroacetyl) groups of compound (7) are deprotected to give free base compound (10).
提供了一种制备二肽基肽酶IV抑制剂的方法,该抑制剂的结构为(10),其中(3)在异丙酸酯中用三氟乙酸酐处理以保护三级羟基为三氟乙酸酯基形成(4)(这是一种新的中间体),然后用威尔斯迈尔试剂或其他氯代试剂将其转化为酸氯化合物(5)(这是一种新的化合物),并与化合物(6)在乙酸乙酯和碳酸氢钠的异相混合物中偶联,得到化合物(7)。化合物(7)的N,O-双(三氟乙酰)基团被去保护,得到自由碱基化合物(10)。