Abstract: The present invention is directed to compounds which are beta-lacatamase inhibitors. The compounds and their pharmaceutically acceptable salts, are useful in combination with beta-lactam antibiotics, or alone, for the treatment of bacterial infections, including infections caused by drug resistant organisms, including multi-drug resistant organisms. The present invention includes compounds according to formula (Ia): or a pharmaceutically acceptable salt thereof, wherein the values of R1, R2, R3 and R4 are described herein.

Abstract: The present invention is directed to compounds which are beta-lacatamase inhibitors. The compounds and their pharmaceutically acceptable salts, are useful in combination with beta-lactam antibiotics, or alone, for the treatment of bacterial infections, including infections caused by drug resistant organisms, including multi-drug resistant organisms. The present invention includes compounds according to formula (Ia): or a pharmaceutically acceptable salt thereof, wherein the values of R1, R2, R3 and R4 are described herein.

Abstract: The present invention is directed to compounds which are beta-lacatamase inhibitors. The compounds and their pharmaceutically acceptable salts, are useful in combination with beta-lactam antibiotics, or alone, for the treatment of bacterial infections, including infections caused by drug resistant organisms, including multi-drug resistant organisms. The present invention includes compounds according to formula (Ia): or a pharmaceutically acceptable salt thereof, wherein the values of R1, R2, R3 and R4 are described herein.

Abstract: The present invention is directed to compounds which are beta-lacatamase inhibitors. The compounds and their pharmaceutically acceptable salts, are useful in combination with beta-lactam antibiotics, or alone, for the treatment of bacterial infections, including infections caused by drug resistant organisms, including multi-drug resistant organisms. The present invention includes compounds according to formula (Ia): or a pharmaceutically acceptable salt thereof, wherein the values of R1, R2, R3 and R4 are described herein.

Abstract: This invention relates to compounds of Formula (I): and their use in the treatment of bacterial infections.

Abstract: A compound of the formula (I), or a pharmaceutically-acceptable salt, or in-vivo hydrolysable ester thereof: (I) wherein in (I) C is for example wherein A and B are independently selected from i) ii) and m is 1 or 2; R2b and R6b, R2a and R6a, R3a and R5a, are for example selected from H, F, OMe and Me; R2b? and R6b?, R2a? and R6a?, R3a?, R5a? are for example selected from H, OMe and Me; R1a is for example optionally substituted (1-10C)alkyl; R1b is for example selected from NR5C(?W)R4, a), or b) wherein HET-1 is for example isoxazolyl and HET-2 is for example triazolyl or tetrazolyl. Methods for making compounds of the formula (I), compositions containing them and their use as antibacterial agents are also described.

Abstract: Compounds of the formula (I), or a pharmaceutically-acceptable salt, or an in-vivo-hydrolysable ester thereof, wherein, for example, HET is an N-linked 5-membered, fully or partially unsaturated heterocyclic ring, or an N-linked 6-membered di-hydro-heteroaryl ring; and Q is, for example, Q1 or Q2: wherein R2 and R3 are independently hydrogen or fluoro; T is selected, for example, from a group of the formula (TA1) or (TA2): wherein, for example, X1m is O? and X2m is R2s—(E)ms—N—; wherein E is an electron withdrawing group, for example, —SO2— or —CO—; and, for example, R2s is hydrogen or (1-6C)alkyl; are useful as pharmaceutical agents; and processes for their manufacture and pharmaceutical compositions containing them are described.