申请人:Hoffmann-La Roche Inc.
公开号:US04578462A1
公开(公告)日:1986-03-25
The manufacture of optically active bifunctional compounds of the general formula ##STR1## wherein R represents protected hydroxymethyl, protected formyl or alkoxycarbonyl and R.sup.1 represents a group of the formula ##STR2## or --CH.sub.2 --CH.dbd.NR.sup.2 in which R.sup.2 and R.sup.3 represent lower alkyl or cycloalkyl or R.sup.2 and R.sup.3 together with the nitrogen atom represent a heterocyclic ring, by isomerizing compounds of the general formula ##STR3## wherein R, R.sup.2 and R.sup.3 have the above significance and R.sup.3 can additionally signify hydrogen, is described. The compounds of formula I are potential intermediates in the manufacture of, inter alia, natural vitamin E and natural vitamin K.sub.1.
本发明描述了通过异构化具有一般式##STR1##的光学活性双官能化合物的制造方法,其中R代表保护的羟甲基,保护的酰基或烷氧羰基,R.sup.1代表公式##STR2##或--CH.sub.2 --CH.dbd.NR.sup.2的基团,在其中R.sup.2和R.sup.3代表较低的烷基或环烷基,或者R.sup.2和R.sup.3与氮原子一起代表杂环环;公式I的化合物是天然维生素E和天然维生素K.sub.1等化合物制造中的潜在中间体。