153565-65-2Relevant academic research and scientific papers
Alphalosporins and 1-carba-1-dethia cephalosporins
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, (2008/06/13)
Compound of formula (I) or salts thereof wherein R1 is hydrogen, methoxy or formamido; R2 is an acyl group; CO2 R3 is a carboxy group or a carboxylate anion, or R3 is a readily removable carboxy protecting group or a pharmaceutically acceptable salt-forming group or in vivo hydrolysable ester group; R4 represents hydrogen or up to four substituents; X is S, SO, SO2 or CH2 ; Y is O, S, SO or SO2 ; n is 0 or 1; m is 1 or 2; and wherein in the (a) ring system the dotted line indicates that one pair of adjacent ring carbon atoms is joined by a C=C double bond. These compounds have antibacterial activity.
