Abstract γ-Monosubstituted and trans-α,β-disubstituted γ-lactams were diastereoselectively synthesized from common intermediates (S)-N,N-dibenzylated aldehydes derived from natural l-(α)-amino acids, employing a divergent approach. The key features of the routes include diastereoselective Henry and Michael reactions that produced chiral γ-nitroester derivatives, which were subsequently submitted to
摘要 γ-单取代和反式-α,β-二取代的γ-内酰胺采用发散的方法,从天然1-(α)-
氨基酸衍生的常见中间体(S)-N,N-二苄基醛中非对映选择性地合成。该途径的关键特征包括产生手性γ-硝基酯衍
生物的非对映选择性亨利和迈克尔反应,随后将其进行串联还原-内酰胺化序列,提供标题化合物。路线的通用性可以允许制备其他几种单,双或三取代的γ-内酰胺。