共 7 条
- [3] Beckwith A. L. J., 1980, REARRANGEMENTS GROUN, VI, P161
- [4] SYNTHESIS OF SOME 1-OXADETHIACEPH-3-EMS [J]. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1, 1978, (11): : 1450 - 1453
- [5] Kuivila H. G., 1970, SYNTHESIS-STUTTGART, P499
- [7] SWEET RM, 1972, CEPHALOSPORINS PENIC, P280