申请人:Ciba-Geigy Corporation
公开号:US04147864A1
公开(公告)日:1979-04-03
7.beta.-amino-3-cephem-3-ol-4-carboxylic acid compounds of the formula ##STR1## wherein R.sub.1.sup.a represents hydrogen or an amino protective group R.sub.1.sup.A and R.sub.1.sup.B represents hydrogen or an acyl group Ac, or R.sub.1.sup.a and R.sub.1.sup.b together represent a bivalent amino protective group, R.sub.2 represents hydroxyl or a radical R.sub.2.sup.A which together with the carbonyl grouping --C(.dbd.O)-- forms a protected carboxyl group and R.sub.3 represents hydrogen, lower alkyl or a hydroxyl protective group, and 1-oxides or 3-cephem compounds of the formula IA, and the corresponding 2-cephem compounds are prepared in that a compound of the formula ##STR2## wherein R.sub.1.sup.a, R.sub.1.sup.b and R.sub.2.sup.A have the meanings mentioned under formula IA, R.sub.3.sup.o represents lower alkyl or a hydroxyl protective group and Y represents a group which is removed, is treated with a base; also comprised are intermediate products.
该化合物的中文翻译如下:7-β-氨基-3-头环-3-醇-4-羧酸化合物的结构式为##STR1##其中R.sub.1.sup.a代表氢或氨基保护基R.sub.1.sup.A,R.sub.1.sup.B代表氢或酰基Ac,或者R.sub.1.sup.a和R.sub.1.sup.b一起代表二价氨基保护基,R.sub.2代表羟基或与羰基团--C(.dbd.O)--一起形成保护羧基的基团R.sub.2.sup.A,R.sub.3代表氢、低碳烷基或羟基保护基,以及公式IA的1-氧化物或3-头环化合物,以及相应的2-头环化合物是通过以下方法制备的:将具有以下含义的化合物##STR2##其中R.sub.1.sup.a、R.sub.1.sup.b和R.sub.2.sup.A在公式IA下提到了含义,R.sub.3.sup.o代表低碳烷基或羟基保护基,Y代表被去除的基团,与碱处理;还包括中间产物。