A method for preparing 2-amino-β-lactams which are substituted by readily-removed protecting groups is provided. According to this invention, an acyl-2-amino-β-lactam is further acylated with a different acyl group and is subsequently treated with base to provide a protected 2-amino β-lactam with a more desirable protecting group.
本发明提供了一种制备被易于去除的保护基取代的 2-
氨基-β-内酰胺的方法。根据本发明,酰基-2-
氨基-β-内酰胺进一步用不同的酰基酰化,然后用碱处理,以得到具有更理想的保护基团的受保护的 2-
氨基 β-内酰胺。