A method for preparing a new class of protected amino intermediates is provided which utilizes reaction of an imido protected primary amine with a secondary amine. The intermediates thus provided are suitably protected for nucleophilic functionalization on the residue of the primary amine. The desired imido protected amine thus derivatized may be regenerated using acid. Further provided are methods for resolving racemic primary amines. Also provided are β-lactam intermediates protected with the new amino protecting group which are useful in the preparation of β-lactam antibiotics.
本发明提供了一种制备新型受保护
氨基中间体的方法,该方法利用了受
亚胺保护的
伯胺与仲胺的反应。由此提供的中间体受到适当的保护,可以在
伯胺的残基上进行亲核官能化。衍生化后的所需亚
氨基保护胺可以用酸再生。进一步提供了解决外消旋
伯胺的方法。还提供了用新的
氨基保护基团保护的β-内酰胺中间体,这些中间体可用于制备β-内酰胺类抗生素。