共 33 条
- [1] BOX S, 1976, Patent No. 118890
- [2] BOX S, 1975, Patent No. 1563103
- [4] BROWN AG, 1976, TETRAHEDRON LETT, P4203
- [5] BROWN AG, 1977, SPECIAL PUBLICATION, V28, P295
- [7] CORBETT DF, 1977, J CHEM SOC CHEM COMM, P808
- [8] DEMARCO PV, 1972, CEPHALOSPORINS PENIC, P311
- [9] ELSON S, COMMUNICATION