摘要:
New 2-oxo-1-azetidine sulfonic acid derivatives with an aminoalkyl substituted "anti" (E-isomer) oxyimino group in the acylamino substituent at the 3 position of the monobactam ring. These compounds are potent inhibitors of bacterial .beta.-lactamases. These compounds can be used in combination with .beta.-lactam antibiotics to increase the effectiveness of the .beta.-lactam antibiotics in fighting infection caused by .beta.-lactamase producing bacteria.
摘要:
A compound of formula (I) ##STR1## wherein R.sub.1 is selected from the group consisting of 2-thienyl, 2-furyl, 2-pyrrolyl, 1-methyl-2-pyrrolyl, 2-amino-1-thiazolyl and 5-isothiazolyl;R.sub.2 is selected from the group consisting of: ##STR2## and M is hydrogen or a pharmaceutically acceptable cation; wherein the oxyimino fragment (.dbd.N--OR.sub.2) in formula (I) is in the `anti` orientation.
摘要:
Novel 3-(substituted)-3-methyl-4-thia-1-azabicyclo�3.2.0!heptane-2-carboxylate, 4,4-dioxides which are of value for use in combination with .beta.-lactam antibiotics to increase the effectiveness of the antibiotics.