Studies on Anti-MRSA Parenteral Cephalosporins. II. Synthesis and Antibacterial Activity of 7.BETA.-[2-(5-Amino-1,2,4-thiadiazol-3-yl)-2(Z)-alkoxyiminoacetamido]-3-(substituted imidazo [1,2-b]pyridazinium-1-yl)methyl-3-cephem-4-carboxylates and Related Compounds.
nBu4NI-catalyzed cross-coupling of benzyl and allylic compounds with N-hydroxyphthalimide for the synthesis of alkyloxyamines were realized for the first time.
The invention relates to new cephem compounds of high antimicrobial activity, the new cephem compounds comprising aminothiazole cycloalkenyloxyimino acetamido cephem derivatives.
This invention relates to novel cephem compounds of high antimicrobial activity, said compounds being of the formula: ##STR1## wherein R.sup.1 is a group of the formula: ##STR2## in which R.sup.5 is amino or a protected amino group; and R.sup.6 is lower alkyl, lower alkenyl, lower alkynyl, cycloalkyl, cyclo(lower)alkenyl, aryl, ar(lower)alkyl, or halogen-substituted ar(lower)alkyl; R.sup.2 is carboxy or a protected carboxy group; A is hydroxy(lower)alkylene, amino(lower)alkylene, protected amino(lower)alkylene, lower alkenylene, hydroxyimino(lower)alkylene, lower alkoxyimino(lower)alkylene, or lower alkenyloxyimino(lower)alkylene; and R.sup.3 is carboxy or a protected carboxy group, and pharmaceutically acceptable salts thereof.
Novel intermediates for preparing new cephem compounds
申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04529802A1
公开(公告)日:1985-07-16
This invention relates to novel cephem compounds, of high antimicrobial activity, and to novel compounds which are useful as intermediates therefor, of the formula: ##STR1## wherein R.sup.1 is amino or a protected amino group; and R.sup.2 is cyclo (lower) alkenyl, or salt thereof.