共 8 条
[1]
INGOLD CK, 1969, STRUCTURE MECHANISM, P534
[4]
KUKOLJA S, 1977, RECENT ADV CHEM BETA, P181
[7]
WHITESITT CA, 1978, TETRAHEDRON LETT, P1737
[8]
SULFUR-FREE PENICILLIN DERIVATIVES .6. SYNTHESIS OF 1-OXACEPHEM RING-SYSTEM
[J].
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE,
1974, 52 (23)
:3996-3999