共 23 条
[3]
CLARK HT, 1949, CHEM PENICILLIN
[5]
HAUFFMAN WF, 1977, J AM CHEM SOC, V99, P2352
[6]
HAYASHI T, 1981, CHEM PHARM BULL, V29, P3158
[7]
KAHAN JS, 1979, J ANTIBIOT, V32, P1
[10]
LANE CF, 1975, SYNTHESIS-STUTTGART, P135