The present invention relates to carbapenems and provides a compound of the formula (I)
wherein:
R¹ is 1-hydroxyethyl, 1-fluoroethyl or hydroxymethyl;
R² is hydrogen or C₁₋₄alkyl;
R³ is hydrogen or C₁₋₄alkyl;
P is of the formula (IA), (IB) or (IC)
and in the formula (IB) the naphthyl group may be bonded to the nitrogen of the linking carbamoyl group at either ring;
Z is carboxy, sulfonic acid, sulfinic acid, C₁₋₄alkanamidosulfonyl (-SO₂NHCOC₁₋₃alkyl), benzamidosulfonyl, C₁₋₄alkylsulfonylcarbamoyl (-CONHSO₂C₁₋₄alkyl), phenylsulfonylcarbamoyl, C₁₋₄alkoxy carbamoyl, hydroxycarbamoyl, sulfoamino, N-C₁₋₄alkanesulfonamido, cyanocarbamoyl, cyanosulfamoyl, tetrazol-5-yl, 3-hydroxyisoxazol-4-yl and 3-hydroxyisoxazol-5-yl;
and P is optionally further substituted provided that when P is of the formula (IA) or (IC), Z is not carboxy;
or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof. Processes for their preparation, intermediates in their preparation, their use as therapeutic agents and pharmaceutical compositions containing them are also described.
The present invention relates to carbapenems and provides a compound of the formula (I) ##STR1## wherein: R.sup.1 is 1-hydroxyethyl, 1-fluoroethyl or hydroxyethyl; R.sup.2 is hydrogen or C.sub.1-4 alkyl; R.sup.3 is hydrogen or C.sub.1-4 alkyl; P is of the formula (IA), (IB) or (IC) ##STR2## and in the formula (IB) the naphthyl group may be bonded to the nitrogen of the linking carbamoyl group at either ring; Z is carboxy, sulfonic acid, sulfinic acid, C.sub.1-4 alkanamidosulfonyl (--SO.sub.2 NHCOC.sub.1-3 alkyl), benzamidosulfonyl, C.sub.1-4 alkylsulfonylcarbamoyl (--CONHSO.sub.2 C.sub.1-4 alkyl), phenylsulfonylcarbamoyl, C.sub.1-4 alkoxy carbamoyl, hydroxycarbamoyl, sulfoamino, N--C.sub.1-4 alkanesulfonamido, cyanocarbamoyl, cyanosulfamoyl, tetrazol-5-yl, 3-hydroxyisoxazol-4-yl and 3-hydroxyisoxazol-5-yl; and P is optionally further substituted provided that when P is of the formula (IA) or (IC), Z is not carboxy; or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof. Processes for their preparation, intermediates in their preparation, their use as therapeutic agents and pharmaceutical compositions containing them are also described.