发明授权
US4283531A Synthesis of .beta.-lactams having a substituted hydroxymethylene group at the position .alpha. to the lactam carbonyl group 失效
在内酰胺羰基的α位具有取代羟基亚甲基的β-内酰胺的合成

Synthesis of .beta.-lactams having a substituted hydroxymethylene group
at the position .alpha. to the lactam carbonyl group
摘要:
.beta.-Lactams having a substituted hydroxymethylene group at the position .alpha. to the lactam carbonyl group are prepared by reaction of an .alpha.-halo-.beta.-lactam with zinc or zinc amalgam in an anhydrous aprotic medium to produce an intermediate which in situ reacts with an appropriate aldehyde or ketone.Also described are novel penicillins and cephalosporins having useful antibacterial activity.
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