摘要:
A process for the preparation of an antibacterially active compound of the formula (I): ##STR1## and salts and esters thereof wherein R.sup.1 and R.sup.2 independently are hydrogen or an organic group, and R.sup.3 is an organic group bonded via a carbon atom to the sulphur atom, which comprises reacting a compound of the formula (II): ##STR2## wherein R.sup.4 is an organic group different to R.sup.3 and R.sup.a is hydrogen or a carboxy-blocking group, with a thiol R.sup.3 SH or reactive derivative thereof. In addition certain compounds within the formula (II) are novel and useful antibacterial agents in their own right.
摘要:
Compounds of the formula ##STR1## and salts and esters thereof wherein R.sub.1 is hydrogen, alkyl of 1 to 4 carbon atoms, phenyl, alkenyl of 2 to 4 carbon atoms, alkynyl of 2 to 4 carbon atoms, acyl of 1 to 4 carbon atoms, a carboxylic acid group or ester thereof of 1 to 7 carbon atoms, or alkyl of 1 to 4 carbon atoms substituted by 1 or 2 halogen atoms, hydroxyl, substituted hydroxyl, amino, protected amino, substituted thio of 1 to 7 carbon atoms, substituted sulphinyl of 1 to 7 carbon atoms, substituted sulphonyl of 1 to 7 carbon atoms, or by a carboxylic acid group or ester thereof of 1 to 7 carbon atoms;R.sub.2 is hydrogen or alkyl of 1 to 4 carbon atoms, or is joined to R.sub.1 to form a cycloalkyl group of 3 to 6 carbon atoms;R.sub.3 is hydrogen, chlorine or bromine; andR.sub.4 is hydrogen, halogen, azido or amino; provided that when R.sub.4 is azido, R.sub.3 is hydrogen and R.sub.1 is methyl,R.sub.2 is not methyl, and that when R.sub.2 R.sub.3 and R.sub.4 are hydrogen andR.sub.1 is hydroxyethyl or an acyl derivative thereof, the compound does not have the (2R, 3S, 5R) stereochemistry; inhibit certain .beta.-lactamate enzymes and are useful in antiseptic and disinfectant solutions.
摘要:
The compounds of the formula: ##STR1## and pharmaceutically acceptable salts and in-vivo hydrolysable esters thereof wherein R.sup.1 is a hydrogen atom or a group selected from OH, OSO.sub.3 H or a pharmaceutically acceptable salt or C.sub.1-4 alkyl ester thereof, OR.sup.2, SR.sup.3, OCOR.sup.2, OCO.sub.2 R.sup.3 or OCONHR.sup.3, where R.sup.2 is a C.sub.1-6 alkyl group or an optionally substituted benzyl group and R.sup.3 is a C.sub.1-6 alkyl group or an optionally substituted benzyl or an optionally substituted phenyl group; and R.sup.22 is a hydrogen atom, C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.3-6 alkynyl wherein the triple bond is not present on the carbon adjacent to the sulphur atom, aralkyl, C.sub.1-6 alkanoyl, aralkanoyl, aryloxyalkanoyl or arylcarbonyl, any of such R.sup.22 groups being optionally substituted; with the proviso that when R.sup.22 is 2-aminoethyl R.sup.1 must be SR.sup.3 or OSO.sub.3 H or a pharmaceutically acceptable salt of C.sub.1-4 alkyl ester thereof; have been found to be antibacterially active. Their use is described as are processes for their preparation.
摘要:
The present invention provides antibiotic compounds of the formula: ##STR1## and salts and cleavable esters thereof wherein X is a SCH.sub.2 CH.sub.2 NH.sub.2 or YNH-COCH.sub.3 group where Y is a SCH.sub.2 CH.sub.2, trans --SO--CH.dbd.-- or cis or trans --S--CH.dbd.CH-- group and R is a lower alkyl, aryl, aralkyl, lower alkenyl, or substituted lower alkyl.
摘要:
Compounds of the formula ##STR1## and salts thereof are useful both for their antibacterial activity and as synergists in combination with penicillins and cephalosporins.
摘要:
The present invention provides a process for inversion of the absolute stereochemistry at the .alpha.-carbon atom of a C-6 substituent of a bicyclic carbapenem antibiotic via a phosphorus - azodicarboxylate mediated reaction. Novel azides, amines and formates are described as useful intermediates and as antibacterial agents.
摘要:
The present invention provides the compounds of the formula (II): ##STR1## and pharmaceutically acceptable salts and esters thereof wherein R.sup.3 is a hydrogen atom, a group HO.sub.3 S-- or a group R.sup.5 CO wherein R.sup.5 is C.sub.1-6 alkyl, C.sub.2-6 alkenyl, aryl, aryl(C.sub.1-6)alkyl or aryloxy(C.sub.1-6)alkyl; and R.sup.4 is an organic group other than methyl bonded to the --CO--NH-- moiety via a carbon atom; with the proviso that when R.sup.3 is a hydrogen atom or a group R.sup.5 CO the stereochemical configuration at the .alpha.-carbon atom of the C-6 substituent is S, and with the further proviso that when R.sup.3 is a group HO.sub.3 S-- the hydrogen atoms at C-5 and C-6 are cis. Their use is described as are processes for their preparation. Compounds wherein the R.sup.4 CO-- moiety is replaced by a hydrogen atom are also prepared.
摘要:
The present invention provides a process for the preparation of a compound of the formula (O): ##STR1## wherein R.degree. is SCH.sub.2 CH.sub.2 NH.sub.2 which process comprises the reaction of a cleavable ester of a compound of the formula (O) wherein R.degree. is H with an optionally protected compound XCH.sub.2 CH.sub.2 NH.sub.2 wherein X is a displaceable group.
摘要:
The present invention relates to the preparation of compounds of the formula: ##STR1## wherein CO.sub.2 R.sub.1 is a free, salted or esterified carboxyl group, n is 0 or 1, and R.sub.2 is hydrogen or an acyl group or a group of the sub-formula (a):R.sub.3 O.sub.3 S (a)wherein R.sub.3 is a salting ion or a methyl or ethyl group, with the proviso that when R.sub.2 is a group of the formula (a), the compound has cis stereochemistry about the .alpha.-lactam ring; which have been found to possess antibacterial and .alpha.-lactamase inhibitory activity.
摘要翻译:本发明涉及下式化合物的制备:其中CO 2 R 1是游离的,盐化的或酯化的羧基,n是0或1,R2是氢或酰基或一个亚式的基团 (a):R3O3S(a)其中R3是盐析离子或甲基或乙基,条件是当R 2是式(a)的基团时,化合物对于β-内酰胺环具有顺式立体化学; 已被发现具有抗细菌和β-内酰胺酶抑制活性。