申请人:Boehringer Ingelheim (Canada) Ltd.
公开号:US05808085A1
公开(公告)日:1998-09-15
A highly efficient and practical means has been developed which enables compounds of the formula: ##STR1## wherein R.sup.1 is lower alkoxy, lower alkylamino, di-(loweralkyl) amino, or the monovalent radical A--NR.sup.3, wherein A is lower alkyl or A is R.sup.4 R.sup.5 NC(O)CH.sub.2 wherein, for example, R.sup.4 is hydrogen or alkyl and R.sup.5 is hydrogen, alkyl or a substituted alkyl, or R.sup.5 is R.sup.6 R.sup.7 N-Alk wherein R.sup.6 and R.sup.7 each is hydrogen or lower alkyl and Alk is a divalent alkyl radical; R.sup.3 is, for example, benzyl, alkyl or a substituted alkyl; and R.sup.2 is, inter alia, alkyl, cycloalkyl, 1H-imidazol-4-yl, 4-thiazolyl or 2-amino-4-thiazolyl; to be prepared through the kinetic resolution of a compound of the formula: ##STR2## wherein R.sup.1 is as defined herein, R.sup.2 is as defined herein, and B is lower alkyl. These compounds are useful intermediates in the synthesis of renin inhibiting compounds.
已经开发出一种高效实用的方法,可以制备式为:##STR1##其中R.sup.1是较低的烷氧基,较低的烷基氨基,二-(较低烷基)氨基,或单价基团A--NR.sup.3,其中A是较低的烷基或A是R.sup.4 R.sup.5 NC(O)CH.sub.2,其中,例如,R.sup.4是氢或烷基,R.sup.5是氢,烷基或取代烷基,或R.sup.5是R.sup.6 R.sup.7 N-Alk,其中R.sup.6和R.sup.7各自是氢或较低的烷基,Alk是双价烷基基团;R.sup.3是,例如,苄基,烷基或取代烷基;R.sup.2是,例如,烷基,环烷基,1H-咪唑-4-基,4-噻唑基或2-氨基-4-噻唑基等;通过动力学分辨制备式为:##STR2##其中R.sup.1,R.sup.2和B的定义如上所述。这些化合物是合成抑制肾素化合物的有用中间体。