摘要:
Disclosed herein are the derivatives of substituted cephalosporanic acid represented by the formula (I): ##STR1## wherein R.sup.1 represents a 4-pyridylthiomethyl group, an alpha-aminobenzyl group, a cyanomethyl group or a 1-tetrazolylmethyl group; R.sup.2 represents a hydrogen atom, an acetoxy group or a (5-methyl-1,3,4-thiadiazol-2-yl)thio group; R.sup.3 represents a hydrogen atom, a hydroxyl group, a carbamoyl group, an alkyl group having 1 to 4 carbon atoms or --(CONH).sub.m (CH.sub.2).sub.n --COOH wherein m is 0 or 1, n is 0, 1 or 2 and the carboxyl group may have been converted to a salt or an ester thereof; p is 0, 1 or 2 and X represents carbon atom or nitrogen atom, and antibiotics comprising the derivatives of substituted cephalosporanic acid represented by the formula (I).
摘要翻译:本文公开了由式(I)表示的取代的头孢烷酸的衍生物:其中R1表示4-吡啶硫基甲基,α-氨基苄基,氰基甲基或1-四唑基甲基; R2表示氢原子,乙酰氧基或(5-甲基-1,3,4-噻二唑-2-基)硫基; R 3表示氢原子,羟基,氨基甲酰基,具有1〜4个碳原子的烷基或 - (CONH)m(CH 2)n -COOH,其中m为0或1,n为0,1或2, 羧基可能已经转化为其盐或酯; p是0,1或2,X表示碳原子或氮原子,以及包含由式(I)表示的取代的头孢烷酸的衍生物的抗生素。
摘要:
Disclosed herein are a derivative of a substituted cephalosporanic acid, represented by the formula (I): ##STR1## wherein p is 0, 1 or 2 and R.sup.1 represents a hydrogen atom, a hydroxyl group, a carbamoyl group, an alkyl group having 1 to 4 carbon atoms or --(CONH).sub.m (CH.sub.2).sub.n --COOH wherein m is 0 or 1; n is 0, 1 or 2 and the carboxyl group may have been converted to the salt or the ester thereof, and an antibiotic comprising a derivative of substituted cephalosporanic acid represented by the formula (I).
摘要:
Disclosed herein are 7-beta-[2-(2-amino-4-thiazolyl)-2-methoxyiminoacetamido]-3-(2-amino-1,3,4-thiadiazolyl-5-thiomethyl)-3-cepheme-4-carboxylic acid, salts thereof and pivaloyloxymethyl ester thereof, and a pharmaceutical composition containing the same as an active ingredient.
摘要:
Disclosed herein are a cephalosporin derivative represented by the formula (I): ##STR1## wherein R.sup.1 represents a halogenoalkyl group, a salt and ester thereof, a process for producing the same, and a pharmaceutical composition and an antibacterial agent comprising the same.
摘要:
A penicillin derivative having an antibacterial activity similar to a penicillin antibiotic in a living body without affecting the intestinal bacterial colonies, a process for preparing the derivative and a pharmaceutical composition in a dosage unit form containing the derivative as an active ingredient are disclosed.
摘要:
A penicillin derivative having an antibacterial activity similar to a penicillin antibiotic in a living body without affecting the intestinal bacterial colonies, a process for preparing the derivative and a pharmaceutical composition in a dosage unit form containing the derivative as an active ingredient are disclosed.
摘要:
A cephalosporin derivative having an antibacterial activity similar to a cephalosporin antibiotic in living bodies without affecting the intestinal bacterial colonies, a method for preparing the derivative and a pharmaceutical composition in a dosage unit form containing the derivative as an active ingredient are disclosed.