[EN] METHODS OF MAKING EFAVIRENZ AND INTERMEDIATES THEREOF<br/>[FR] PROCÉDÉS DE PRÉPARATION D'ÉFAVIRENZ ET INTERMÉDIAIRES CORRESPONDANTS
申请人:APOTEX PHARMACHEM INC
公开号:WO2011009203A1
公开(公告)日:2011-01-27
The present invention is directed to methods of preparation of Efavirenz ( 1 ),various intermediates useful in the preparation of Efavirenz and methods of preparation of such intermediates hi some embodiments, a stereoselective cyclopropylacetylide addition reaction may be controlled by introduction of an appropriate chiral carbonyl auxiliary group on the aniline nitrogen The product of such an aymmetric addition (5) may then undergo a cyclization reaction with concomitant removal of the chiral auxiliary group, without the need for a discrete deprotection step. Formulae (I), (II).
本发明涉及制备Efavirenz(1)的方法,制备Efavirenz所需的各种中间体以及制备这种中间体的方法。在某些实施例中,立体选择性的环丙基乙炔基加成反应可以通过在苯胺氮上引入适当的手性羰基辅助基来控制。这种不对称加成的产物(5)可以随后进行环化反应,并伴随着手性辅助基的去除,而无需离散的去保护步骤。公式(I),(II)。