摘要:
A method of improving the stability of a quaternary ammonium salt; and a process for efficiently producing the quaternary ammonium salt having improved stability.
摘要:
The present invention relates to cephalosporin derivatives of the general formula where
R 1 is halogen, lower alkyl, phenyl, benzyl, styryl, naphthyl or heterocyclyl; the lower alkyl, phenyl, benzyl, styryl, naphthyl and heterocyclyl being optionally substituted by at least one of halogen, hydroxy, optionally substituted lower alkyl, optionally substituted lower alkoxy, optionally substituted phenyl, amino, lower alkylamino, di-lower alkylamino, carboxy, lower alkylcarboxy, carbamoyl or lower alkylcarbamoyl; R 4 , R 5 independently are hydrogen, lower alkyl or phenyl; X is S, O, NH or CH 2 ; n is 0,1 or 2; m is 0 or 1; s is 0 or 1; R 2 is hydrogen, hydroxy, -CH 2 -CONHR 6 , lower alkyl-Q r , cycloalkyl-Q r , lower alkoxy, lower alkenyl, cycloalkenyl-Q r , lower alkynyl, aralkyl-Q r , aryl-Q r , aryloxy, aralkoxy, a heterocyclic ring or a heterocyclyl-Q r , the lower alkyl, cycloalkyl, lower alkoxy, lower alkenyl, cycloalkenyl, lower alkynyl, aralkyl, aryl, aryloxy, aralkoxy and the heterocyclic ring may be substituted with at least one group selected from carboxy, amino, nitro, cyano, -SO 2 NHR 6 , optionally fluoro substituted lower alkyl, lower alkoxy, hydroxy, halogen, -CONR 6 R 7 , -CH 2 CONR 6 R 7 , -N(R 7 )COOR 8 , R 7 CO-, R 7 OCO-, R 7 COO-, -C(R 7 R 9 )CO 2 R 8 , -C(R 7 R 9 )CONR 7 R 10 , wherein
R 6 is hydrogen, lower alkyl, cycloalkyl or aryl; R 7 and R 9 are independently hydrogen or lower alkyl; R 8 is hydrogen, lower alkyl, lower alkenyl or a carboxylic acid protecting group; and R 10 is hydrogen, ω-hydroxy-alkyl, phenyl, naphthyl or heterocyclyl, the phenyl, naphthyl or heterocyclyl being unsubstituted or substituted with at least one of the groups of optionally protected hydroxy, halogen, optionally substituted lower alkyl or ω-hydroxyalkyl, optionally substituted lower alkoxy and/or cyano, or R 7 and R 10 form together group of formula
Q is -CHR-, -CO- or -SO 2 -; r is 0 or 1; R is hydrogen or lower alkyl; and R 3 is hydroxy, -O - , lower-alkoxy, or -OM and M represents an alkali metal; as well as readily hydrolyzable esters thereof, pharmaceutically acceptable salts of said compounds and hydrates of the compounds of formula I and of their esters and salts, as wen as the preparation of such compounds, their use for the treatment of infectious diseases and pharmaceutical preparations containing such compounds.
摘要翻译:本发明涉及通式为CHEM的头孢菌素衍生物,其中R 1为卤素,低级烷基,苯基,苄基,苯乙烯基,萘基或杂环基; 羟基,任选取代的低级烷基,任选取代的低级烷氧基,任选取代的苯基,氨基,低级烷基氨基,二低级烷基氨基,羧基,低级烷基,低级烷基氨基, ,低级烷基羧基,氨基甲酰基或低级烷基氨基甲酰基; R 4,R 5独立地是氢,低级烷基或苯基; X是S,O,NH或CH 2; n为0,1或2; m为0或1; s为0或1; R 2是氢,羟基,-CH 2 -CONHR 6,低级烷基-Q,环烷基-Q,低级烷氧基,低级烯基,环烯基-Q,低级炔基,芳烷基-Q,芳基-Cr,芳氧基,芳烷氧基 ,杂环或杂环基-Q,低级烷基,环烷基,低级烷氧基,低级烯基,环烯基,低级炔基,芳烷基,芳基,芳氧基,芳烷氧基和杂环可以被至少一个选自羧基, 氨基,硝基,氰基,-SO 2 NHR 6,任选氟取代的低级烷基,低级烷氧基,羟基,卤素,-CONR 6 R 7,-CH 2 CONR 6 R 7, (R 7)COOR 8,R 7 CO-,R 7 OCO-,R 7 COO-,-C(R 7 R 9)CO 2 R 8,-C(R R 7 R 9)CONR 7 R 10,其中R 6是氢,低级烷基,环烷基或芳基; R 7和R 9独立地是氢或低级烷基; R 8是氢,低级烷基,低级烯基或羧酸保护基; R 10是氢,ω-羟基 - 烷基,苯基,萘基或杂环基,苯基,萘基或杂环基是未取代的或被至少一个任选被保护的羟基,卤素,任选取代的低级烷基或ω- - 羟烷基,任选取代的低级烷氧基和/或氰基,或R 7和R 10一起形成式CHEM的基团是-CHR-, - CO-或-SO 2 - ; r为0或1; R是氢或低级烷基; R 3为羟基,-O - , - 低级烷氧基或-OM,M为碱金属; 以及其易水解的酯,所述化合物的药学上可接受的盐和式I化合物的水合物及其酯和盐,作为这些化合物的制备,其用于治疗感染性疾病的药物和含有 这样的化合物。
摘要:
A method of improving the stability of a quaternary ammonium salt and a method of efficiently preparing the quaternary ammonium salt having improved stability.
摘要:
The present invention relates to cephalosporin derivatives of the general formula I wherein
R 1 is a group selected from 2-, 3- and 4-hydroxyphenyl, 2- and 3-methoxyphenyl, 4-carboxyphenyl, 4-carbamoylphenyl, 3-trifluoromethylphenyl, 2- and 3-fluorophenyl, 3-nitrophenyl, 3-fluoro-4-hydroxyphenyl, 2-fluoro-4-hydroxyphenyl, 3-fluoro-2-hydroxyphenyl, 3-, 4-dihydroxyphenyl, benzyl, -CHR-phenyl, 3-hydroxybenzyl, 4-aminobenzyl, 2-, 3- and 4-fluorobenzyl, 2-, 3- and 4-methoxybenzyl, 4-nitrobenzyl, 4-carboxybenzyl, 4-trifluoromethylbenzyl, 1-naphthyl and 2-naphthyl, all hydroxy, amino, carboxy and carbamoyl substituents optionally being substituted, or is pyridinyl mono-substituted with halogen, pyrimidyl, pyrazinyl di-substituted with lower alkyl, pyridazinyl mono-substituted with halogen, piperidinyl in which the amino group may be substituted by an acyl group, thiadiazolyl, oxo-tetrahydrofuranyl, thiophenyl mono-substituted with lower alkoxycarbonyl or carbamoyl, tetrazolyl-lower alkyl, tetrahydrofuranyl-lower alkyl, thiophenyl-lower alkyl or benzimidazolyl-lower alkyl; and R is carboxy or esterified carboxy; readily hydrolyzable esters thereof, pharmaceutically acceptable salts of said compounds and hydrates of the compounds of formula I and of their esters and salts, as well as the their use and the process for manufacturing such compounds.
摘要:
3-Alkenylcephem compounds represented by the general formula (1): wherein R1 is benzyl or phenoxymethyl; R2, R3 and R4 are each independently hydrogen, C1-10 alkyl, C4-8 cycloalkyl, or aryl C1-3 alkyl whose aryl moiety may be substituted with C1-4 alkyl; R2 and R3 may be united to form a -(CH2)lXm(CH2)n- group which may be substituted with C1-4 alkyl at an arbitrary position; X is oxygen or -N(R5)-; l is 0 to 3; m is 0 or 1; n is an integer of 2 to 4; and R5 is hydrogen or C1-4 alkyl.
wherein R 1 is benzyl or phenoxymethyl, R 2 , R 3 and R 4 are alike or different and are each a hydrogen atom, C 1-10 alkyl, C 4-8 cycloalkyl or aryl C 1-3 alkyl substituted or unsubstituted with C 1-4 alkyl, R 2 and R 3 , when taken together, form a group -(CH 2 ) 1 X m (CH 2 ) n - substituted or unsubstituted with C 1-4 alkyl at an optional position, X is an oxygen atom or group -N(R 5 )-, 1 is 0 to 3, m is 0 or 1, n is an integer of 2 to 4, R 5 is a hydrogen atom or C 1-4 alkyl.
摘要:
Cephalosporin pyridinium derivatives of the general formula I wherein
R 1 is hydrogen, lower alkyl, cycloalkyl or acetyl; X is CH or N; n is 0, 1 or 2; m is 0 or 1; R 2 is hydrogen, lower alkyl, ω-hydroxy alkyl, benzyl or lower alkyl-heterocyclyl, the benzyl and the heterocyclyl group being unsubstituted or substituted with at least one of the groups amino, cyano, carboxy, halogen, hydroxy, lower alkyl, lower alkoxy or -CONR 2 , R being hydrogen or lower alkyl; or R 2 is -CH 2 CONR 4 R 5 ; wherein R 4 , R 5 are independently hydrogen, ω-hydroxy-alkyl, phenyl, naphthyl or heterocyclyl, the phenyl, naphthyl or heterocyclyl being unsubstituted or substituted with at least one of the groups of optionally protected hydroxy, halogen, optionally substituted lower alkyl, optionally substituted lower alkoxy, ω-hydroxyalkyl and/or cyano; or R 4 and R 5 form together a group of formula with the proviso that m is 1, when the pyridinium ring A is a pyridinium-4-yl; as well as readily hydrolysable esters thereof, pharmaceutically acceptable salts of said compounds and hydrates of the compounds of formula I and of their esters and salts.