Stereoselective synthesis of seven-membered lactams and lactones on a carbohydrate scaffold using ring-closing metathesis
作者:Dominic L. Laventine、Paul M. Cullis、Marcos D. García、Paul R. Jenkins
DOI:10.1016/j.tetlet.2009.03.125
日期:2009.7
electron-deficient α,β-unsaturated amides and esters leading to the synthesis of enantiopure azepinone and oxepinone derivatives on a carbohydrate glycoside scaffold. The relative stereochemistries of the compounds obtained were corroborated by X-ray crystallography, 1H NMR or deduced based on previously reported results. These compounds are designed as precursors of new polyhydroxylated heteroannulated
我们在这里介绍了Grubbs第二代催化剂在缺电子的α,β-不饱和酰胺和酯的闭环易位反应中的应用,从而导致在碳水化合物糖苷骨架上合成对映体纯的ze庚酮和oxepinone衍生物。通过X射线晶体学,1 H NMR证实了所获得的化合物的相对立体化学,或者根据先前报道的结果推导了该相对立体化学。这些化合物被设计为具有潜在生物活性的新型多羟基杂化糖的前体。