[EN] A PROCESS FOR THE PREPARATION OF AN ALDEHYDE BETA-LACTAM COMPOUND<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN COMPOSÉ BÊTA-LACTAME D'ALDÉHYDE
申请人:ADAMED SP ZOO
公开号:WO2010097350A1
公开(公告)日:2010-09-02
The invention relates to a process for the preparation of an aldehyde beta-lactam compound of formula (I), wherein P1 is H or a protecting group, useful in the preparation of ezetimibe, from a nitrone compound of formula (II). The nitrone compound Il is prepared by reacting 4-fluorophenylhydroxyloamine with OH- protected 4-hydroxybenzaldehyde. The nitrone compound of formula (II) is reacted with an acetylene compound of formula (III) to form a compound of formula (IV), and the compound of formula (IV), after optional deprotection, is oxidized to obtain an aldehyde of formula (V), which undergoes isomerisation to the compound of formula (I). The subject of the invention are also novel compounds of formulas (II) and (IV).
本发明涉及一种用于制备公式(I)所示的醛基β-内酰胺化合物的方法,其中P1是H或一个保护基团,该方法可用于依泽替米滨的制备,从公式(II)所示的硝酮化合物出发。硝酮化合物II是通过4-氟苯基羟基胺与OH-保护的4-羟基苯甲醛反应制备的。公式(II)所示的硝酮化合物与公式(III)所示的炔烃化合物反应,形成公式(IV)的化合物,公式(IV)的化合物在可选去保护后,被氧化以获得公式(V)的醛,该醛经过异构化转变为公式(I)的化合物。本发明的主题还包括新颖的公式(II)和(IV)的化合物。