Cephalosporins, processes for their preparation and pharmaceutical compositions containing them
申请人:BEECHAM GROUP PLC
公开号:EP0265185A3
公开(公告)日:1990-03-28
Antibacterial agents have the formula (Ia) or are pharmaceutically acceptable salts or invivo hydrolysable esters thereof:
wherein R¹ is an acyl group, in particular that of an antibacterially active cephalosporin; R² is hydrogen, methoxy, or formamido; Y is S, SO, SO₂, O or CH₂; X is oxygen, sulphur, or -NH- and R⁴ is a group of the formula CO Z R⁵ wherein Z is -CH=CH-, -(CH₂)n- or -NH-; n is 0, 1 or 2; and R⁵ is:
wherein R⁶ and R⁷ are the same or different, each representing hydroxy or protected hydroxy and R⁸ is hydroxy, amino, halogen or carboxy.The use of the compounds of formula (Ia) and intermediates for their preparation are also disclosed.
抗菌剂的化学式为(Ia),或者是其药用可接受的盐或体内水解酯:
其中R¹是酰基,特别是抗菌活性头孢菌素的酰基;R²是氢、甲氧基或甲酰胺基;Y是S、SO、SO₂、O或CH₂;X是氧、硫或-NH-,R⁴是化学式CO Z R⁵的基团,其中Z是-CH=CH-、-(CH₂)n-或-NH-;n为0、1或2;R⁵是:
其中R⁶和R⁷相同或不同,分别代表羟基或保护羟基,R⁸是羟基、氨基、卤素或羧基。该化合物的使用和其制备的中间体也被披露。