| Patent Number |
Title Of Patent |
Date Issued |
| 5637721 |
Process for the preparation of cephem prodrug esters |
June 10, 1997 |
| The invention relates to a process which comprises a compound of the formula II ##STR1## |
| 5614623 |
Diastereomers of 1-(isopropoxycarbonyloxy)ethyl 3-cephem-4-carboxylate and processes for their p |
March 25, 1997 |
| Enterally absorbable diastereomers of 1-(isopropoxycarbonyloxy)ethyl (6R, 7R)-7-[2-(2-aminothiazol-4-yl)-2-(Z)-(methoxyimino)acetamido]-3-(methoxyme thyl)-3-cephem-4-carboxylate of the formula I ##STR1## and their physiologically acceptable salts and also diastereomerically pure s |
| 5589594 |
Process for the preparation of cephem prodrug esters |
December 31, 1996 |
| The invention relates to a process for the preparation of cephem prodrug esters of the formula: ##STR1## in which R.sup.1 is C.sub.1 -C.sub.5 -alkanoyloxy-C.sub.1 -C.sub.3 -alkyl or C.sub.1 -C.sub.5 -alkoxycarbonyloxy-C.sub.1 -C.sub.3 -alkyl and X is an inorganic or organic anion |
| 5550232 |
Diastereomers of 1-(isopropoxycarbonyloxy) ethyl 3-cephem 4-carboxylate |
August 27, 1996 |
| Enterally absorbable diastereomers of 1-(isopropoxycarbonyloxy)ethyl (6R,7R)-7-[2-(2-aminothiazol-4-yl)-2-(Z)-(methoxyimino)acetamido]-3-(metho xymethyl)-3-cephem-4-carboxylate of the formula I ##STR1## and their physiologically acceptable salts and also diastereomerically pure sa |
| 5461043 |
Diastereomers of 1-(isopropoxycarbonyloxy)ethyl 3-cephem-4-carboxylate |
October 24, 1995 |
| Enterally absorbable diastereomers of 1-(isopropoxycarbonyloxy)ethyl (6R,7R)-7-[2-(2-aminothiazol-4-yl)-2-(Z)-(methoxyimino)acetamido]-3-(metho xymethyl)-3-cephem-4-carboxylate of the formula I ##STR1## and their physiologically acceptable salts and also diastereomerically pure sa |
| 5405844 |
Tetracyclic antibiotics and processes for their preparation |
April 11, 1995 |
| Tetracyclic antibiotics and processes for their preparation .beta.-Lactam antibiotics of the formula I, and their pharmaceutically tolerable salts ##STR1## where X is (CH.sub.2).sub.0-2, CR(a)R(b), O, SO.sub.0-2 or NR(c),R1, R2 and R3 are a multiplicity of substituents, are outstanding |
| 5198544 |
Process for the preparation of penem compounds |
March 30, 1993 |
| Compound I ##STR1## is obtained by reaction of compound II with compound III |
