Bis-tetrazoylmethyl substituted cephalosporin antibiotics, their preparation and pharmaceutical formulations containing them
申请人:ELI LILLY AND COMPANY
公开号:EP0048169A2
公开(公告)日:1982-03-24
7β-Acylamino-3-cephem-4-carboxylic acids substituted in the 3-position with a bis-tetrazole-methylthiomethyl group are described. They are represented by the formula
wherein R is hydrogen or an acyl group of the formula
wherein R1 is C1-C4 alkyl or C1-C4 alkyl substituted by halogen or cyano; or R is an aroyl or aralkanoyl group of the formula
wherein R2 is phenyl or a mono-substituted phenyl group substituted by halogen, cyano, amino, hydroxy, C1-C4 alkyl, C1-C4 alkoxy, carboxy, carboxamido, hydroxymethyl, aminomethyl, carboxymethyl, or C1-C4 alkoxycarbony-Imethyl; or R2 is a di- or tri-substituted phenyl group of the formula
wherein a, a', and a" independently are hydrogen, halogen, hydroxy, C1-C4 alkoxy, provided that only one of a. a' and a" may be hydrogen, and n is 0 or 1; or R is a heteroarylalkanoyl group of the formula
wherein R3 is a group of the formula
wherein each b is hydrogen, amino, protected-amino, C1-C3 alkyl or phenyl; or R is an aryloxyacetyl or arylthioacetyl group of the formula
wherein R2 has the same meanings as defined above and Z is 0 or S; or R is a substituted aralkanoyl or heteroarylalkanoyl group of the formula
wherein R4 is R2 as defined above, and in addition is 1,4-cyclohexadienyl, thienyl or furyl, and Q is hydroxy, formyloxy, carboxy, sulfo, or amino; or R is an oximino-substituted aralkanoyl or heteroarylalkanoyl group of the formula
wherein R5 is R2 and R3 as each is defined above, and R6 is hydrogen, or C1-C4 alkyl, or R is a group of the formula
wherein R4 has the same meanings defined above and R' is phenyl substituted by from 1 to 3 hydroxy groups, or pyridyl substituted by from 1 to 3 hydroxy groups, or a group of the formula
wherein RB is C1-C4 alkylamino, phenyl, halophenyl, furyl, styryl, nitrostyryl or halostyryl; or R7 is a group of the formula
wherein n' is 1 or 2 and m is 2 or 3, with the limitation that when n' is 2, m is 2, and R9 is hydrogen, C1-C3 alkyl, C2-C4 alkanoyl, or C1-C3 alkylsulfonyl; R, is hydrogen or a carboxy protecting group; R2 is hydrogen or methoxy; R3 is a bis-tetrazolemethyl group of the formula
wherein R4 is hydrogen, or C1-C3 alkyl; and when R, is hydrogen, the pharmaceutically acceptable salts thereof.
The compounds are broad spectrum antibiotics useful in the treatment and control of microorganisms pathogenic to man and animals. 7β-Amino nucleus compounds represented when R is hydrogen are intermediates useful in the preparation of the antibiotics where R is acyl.
The compounds are prepared by reacting a 7-amino-3- acyloxy or halo-1-oxa-β-lactam acid or ester with the appropriate bis-tetrazolemethyl thiol.
7β-Acylamino-3-cephem-4-carboxylic acids 的 3 位被双四唑甲硫甲基取代。它们用式表示
其中 R 是氢或式中的酰基
其中 R1 是 C1-C4 烷基或被卤素或氰基取代的 C1-C4 烷基;或 R 是式中的酰基或芳酰基
其中 R2 是苯基或被卤素、氰基、氨基、羟基、C1-C4 烷基、C1-C4 烷氧基、羧基、羧酰胺基、羟甲基、氨甲基、羧甲基或 C1-C4 烷氧基羰基-甲基取代的单取代苯基;或 R2 是式中的二取代或三取代苯基。
其中 a、a'和 a "独立地为氢、卤素、羟基、C1-C4 烷氧基,但 a、a'和 a "中只能有一个为氢,且 n 为 0 或 1;或 R 为式中的杂芳基烷酰基。
其中 R3 是式中的基团
其中每个 b 是氢、氨基、受保护氨基、C1-C3 烷基或苯基;或 R 是式中的芳氧基乙酰基或芳硫基乙酰基。
其中 R2 的含义与上述定义相同,Z 为 0 或 S;或 R 为式中的取代芳烷基或杂芳基芳烷基基团
其中 R4 是如上定义的 R2,此外是 1,4-环己二烯基、噻吩基或呋喃基,且 Q 是羟基、甲酰氧基、羧基、磺基或氨基;或 R 是式中的草酰亚胺取代的假烷酰基或杂芳基假烷酰基。
其中 R5 是如上定义的 R2 和 R3,R6 是氢或 C1-C4 烷基,或 R 是式中的基团
其中 R4 具有与上式相同的定义,R'是被 1 至 3 个羟基取代的苯基,或被 1 至 3 个羟基取代的吡啶基,或一个式中的基团
其中 RB 是 C1-C4 烷基氨基、苯基、卤代苯基、呋喃基、苯乙烯基、硝基或卤代苯乙烯基;或 R7 是式中的基团
其中 n' 为 1 或 2,m 为 2 或 3,但当 n' 为 2 时,m 为 2,R9 为氢、C1-C3 烷基、C2-C4 烷酰基或 C1-C3 烷基磺酰基;R,为氢或羧基保护基;R2 为氢或甲氧基;R3 为式中的双四唑甲基基团
其中 R4 为氢或 C1-C3 烷基;当 R 为氢时,为其药学上可接受的盐。
这些化合物是广谱抗生素,可用于治疗和控制对人类和动物致病的微生物。当 R 为氢时所代表的 7β-氨基核化合物是制备 R 为酰基的抗生素的中间体。
这些化合物是通过 7-氨基-3-酰氧基或卤代-1-氧杂-β-内酰胺酸或酯与适当的双四唑甲基硫醇反应制备的。