申请人:Dipharma Francis S.r.l.
公开号:EP1808492A1
公开(公告)日:2007-07-18
A process for the preparation of an acid of formula (I), as the individual (R) enantiomer or (S), or a salt thereof
wherein R is a protected amino group; and the asterisk * denotes the stereogenic carbon atom, comprising contacting an ester of formula (II), as mixture of (R,S) enantiomers, or a salt thereof,
wherein R1 is straight or branched C1-C6 alkyl, optionally substituted with phenyl; and the asterisk * and R have the meanings defined above, with a lipase from Candida antarctica, under conditions effective to obtain a mixture comprising an acid of formula (I), as the individual (R) enantiomer, and an ester of formula (II), as the individual (S) enantiomer; the subsequent hydrolysis of the latter to obtain an acid of formula (I), as the individual (S) enantiomer; and, if desired, the conversion of an acid of formula (I), either as the (R) or (S) enantiomer, to a salt thereof.
一种制备公式(I)的酸的过程,作为个体(R)对映体或(S)或其盐,其中R是保护的氨基基团; 星号*表示立体异构碳原子,包括将公式(II)的酯与Candida antarctica的脂肪酶接触,以有效条件获得混合物,其中包括公式(I)的酸作为个体(R)对映体和公式(II)的酯作为个体(S)对映体; 随后水解后者以获得公式(I)的酸作为个体(S)对映体; 如果需要,将公式(I)的酸转化为其盐,无论是(R)或(S)对映体。