摘要:
There are presented anti-bacterial cephalosporins having broad antimicrobial activity of the formula ##STR1## wherein R.sub.1 is an antibiotically active quinolonyl; R.sub.2 is selected from the group consisting of hydrogen, lower alkoxy, amino, lower alkylthio and amido; R.sub.3 is selected from the group consisting of hydrogen, and acyl group, and m is 0, 1 or 2 and the readily hydrolysable esters or salts of these compounds and hydrates of the compounds of formula I or of their esters or salts.
摘要:
There are presented antibacterial cephalosporine having broad antimicrobial activity, having the formula ##STR1## wherein R is hydrogen or a carboxylic acid-protecting group: R.sub.1 represents a substituted piperazinyl group of formula ##STR2## or a substituted pyrrolidinylamino group of formula ##STR3## or a substituted pyrrolidinylmethylamino group of formula ##STR4## where the piperazinyl or pyrrolidinyl group may be optionally substituted with one or more lower alkyl groups, and where Q represents a substituted quinolinyl or naphthyridinyl group: R.sub.2 is selected from the group consisting of hydrogen, lower alkoxy, lower alkylthio and amido; R.sub.3 is hydrogen or an acyl group: and m is 0, 1 or 2, but preferably 0; as well as the corresponding readily hydrolyzable esters. pharmaceutically acceptable salts and hydrates of these compounds.
摘要:
There are presented antibacterial cephalosporins having broad antimicrobial activity as well as intermediates for their formation, such compounds having the formula ##STR1## wherein R is hydrogen or a carboxylic acid-protecting group; R.sub.1 is a substituted piperazinium group of the formula ##STR2## in which Q represents a substituted quinolinyl or naphthyridinyl group and the piperazine nucleus may be optionally substituted with one or more lower alkyl groups; R.sub.2 is selected from the group consisting of hydrogen, lower alkoxy, lower alkylthio and amido; R.sub.3 is hydrogen or an acyl group; and m is 0, 1 or 2, preferably 0;as well as the corresponding readily hydrolyzable esters, pharmaceutically acceptable salts and hydrates of these compounds.
摘要:
The amino acid 2-amino-4-(2-aminoethoxy)-trans-but-3-enoic acid can be conveniently prepared via novel intermediates from a 2,2'-disubstituted diethyl ether and a dialkyl N-protected amidomalonate starting material using a multi-step process. Preferred starting materials are bis-2-chloroethyl ether and diethyl acetamidomalonate. The process, in a preferred embodiment, proceeds through the key intermediate ethyl-2-acetamido-4-[2-(2-phthalimido)ethoxy]-but-2-enoate.
摘要:
A novel family of .beta.-lactam antibacterials, synthetic methods and intermediates useful in the production of such antibacterials, and the use of such compounds as antibacterials are disclosed. The novel compounds have the formula ##STR1## wherein, Z.sup.1 is a group --OR.sup.1, --NR.sup.3 R.sup.4, or --SR.sup.5 ;Z.sup.2 is a group --OR.sup.2, --NR.sup.3 R.sup.4, or --SR.sup.6 ;R.sup.1 and R.sup.2 may be either the same or different and each is H, lower alkyl, aralkyl, aryl or heteroaryl;R.sup.3 and R.sup.4 may be either the same or different and each is H, lower alkyl, aralkyl, aryl or heteroaryl;R.sup.5 and R.sup.6 may be either the same of different and each is H, lower alkyl, aralkyl, aryl or heteroaryl;R.sup.7 is H, lower alkyl, or lower alkoxycarbonyl; and,R.sup.8 is acyl;as well as pharmaceutically acceptable salts thereof.
摘要翻译:公开了一种新颖的β-内酰胺类抗生素,合成方法和用于生产这种抗菌剂的中间体,以及使用这些化合物作为抗菌剂。 该新化合物具有式“IMAGE”,其中,Z1为基团-OR1,-NR3R4或-SR5; Z2是基团-OR2,-NR3R4或-SR6; R 1和R 2可以相同或不同,各自为H,低级烷基,芳烷基,芳基或杂芳基; R 3和R 4可以相同或不同,各自为H,低级烷基,芳烷基,芳基或杂芳基; R 5和R 6可以是不同的,并且各自是H,低级烷基,芳烷基,芳基或杂芳基; R7是H,低级烷基或低级烷氧基羰基; R8是酰基; 以及其药学上可接受的盐。
摘要:
A .beta.-lactamase inhibitor of the formula ##STR1## and the pharmaceutically acceptable salts thereof are presented. Also presented are intermediates and synthetic processes for the manufacture of the formula I compound.The compound inhibits the activity of enzymes which inactivate certain .beta.lactam antibiotics.
摘要:
The present invention is directed to compounds of the formula ##STR1## wherein R.sub.1 is lower alkyl and R.sub.2 is lower alkyl or aryl. Also provided are methods for preparation of these compounds. The compounds of formula I above are useful as plant growth regulants.
摘要:
Compounds of the formula ##STR1## wherein A is ##STR2## in which R.sub.1 is acyl, R.sub.2 is hydrogen, lower alkyl, lower alkoxy-carbonyl or aminocarbonyl, R.sub.3 is hydrogen or lower alkyl, R.sub.4 and R.sub.4, are each hydrogen, lower alkyl, lower alkoxy, aryl, aryloxy or aralkyl, as well as the pharmaceutically acceptable salts of such compounds, are useful as antibacterial agents for combatting infections in mammals.
摘要:
Compounds of the formula ##STR1## wherein A is one of the following: ##STR2## in which R.sub.1, is acyl, R.sub.2 is hydrogen, lower alkyl, lower alkoxycarbonyl or aminocarbonyl, R.sub.3 is hydrogen or lower alkyl and R.sub.4 and R.sub.4 ' are hydrogen, lower alkyl, lower alkoxy, acyl or aralkyl, as well as pharmaceutically acceptable salts of such compounds, are useful as antibacterial agents.