| 4683227 |
Antibiotic derivatives of 7.beta.-[2-(thiazol-4-yl)acetamide]-3-chloro-3-cephem-4-carboxylic acids and compositions and method of use thereof |
Walter E. Wright |
1987-07-28 |
| 4501741 |
Cephalosporin antibiotics |
Bernard J. Graves |
1985-02-26 |
| 4492693 |
Benzothienylglycyl cephalosporin derivatives |
Larry C. Blaszczak, Jan R. Turner |
1985-01-08 |
| 4431803 |
7-Epi 3-exomethylenecephams |
Janice L. Pfeil |
1984-02-14 |
| 4407750 |
Unsymmetrical azetidinone aldehyde disulfides and process |
Janice L. Pfeil |
1983-10-04 |
| 4394313 |
Symmetrical azetidinone aldehyde disulfides and process |
Janice L. Pfeil |
1983-07-19 |
| 4368156 |
Preparation of 4-haloazetidin-2-ones from 4-sulfinoazetidin-2-ones |
Wayne A. Spitzer, Theodore Goodson, Jr., Steven R. Lammert |
1983-01-11 |
| 4336191 |
Penicillin conversion by halogen electrophiles and anti-bacterials derived thereby |
— |
1982-06-22 |
| 4335240 |
Process for cyclization |
Janice L. Pfeil |
1982-06-15 |
| 4302391 |
Unsymmetrical azetidinone aldehyde disulfides and process |
Janice L. Pfeil |
1981-11-24 |
| 4293493 |
Azetidinone alcohol disulfides and process for cyclization |
Janice L. Pfeil |
1981-10-06 |
| 4293495 |
Symmetrical azetidinone aldehyde disulfides and process |
Janice L. Pfeil |
1981-10-06 |