名称:
Regio- and stereoselective ring-opening of chiral 1,3-oxazolidin-2-one derivatives by organocopper reagents provides novel access to di-, tri- and tetra-substituted alkene dipeptide isosteresElectronic supplementary information (ESI) available: synthetic procedures and characterization for 4a,b, 5a,b, 7b, 8a,b, 9a,b, 10b, 11a,b, 12b,c, 13b, 14a,b, 15, 16a,b, 17a,b, 18, 19b, 20b. See http://www.rsc.org/suppdata/p1/b2/b203482d/
摘要:
有机铜介导的β-(N-Boc-2-氧代-1,3-嗯唑烷-5-基)-α,β-烯酸酯的烷基化反应已被深入研究。通过反式-SN2'环开裂,烷基化反应在区域选择性和立体选择性上进行,为从手性氨基酸衍生物合成ψ[(E)-CHCH]-、ψ[(E)-CMeCH]-和ψ[(E)-CMeCMe]-型烯丙二肽类似物提供了一条新途径。这些合成的试剂是潜在的II型和II'型β-转角结构域模拟物。