作者:Amol M. Kendhale、Legiso Poniman、Zeyuan Dong、Katta Laxmi-Reddy、Brice Kauffmann、Yann Ferrand、Ivan Huc
DOI:10.1021/jo1019442
日期:2011.1.7
The synthesis of quinoline-derived helically folded aromatic oligoamides functionalized by various chiral functions at their N-terminus is reported. When a (1S)-(−)-camphanyl moiety was introduced, it was found that helix handedness was completely shifted to right-handed helicity (de > 99%), in both protic and nonprotic solvents. The absolute helical sense and the de values were unambiguously characterized
据报道,喹啉衍生的螺旋折叠的芳族寡酰胺在其N端被各种手性官能团官能化。当引入(1 S)-(-)-樟脑基部分时,发现在质子传递和非质子传递溶剂中,螺旋旋性都完全转变为右旋螺旋度(de> 99%)。绝对螺旋感和de值通过1 H NMR,圆二色性(CD)和X射线晶体学进行了明确表征。这些化合物的晶体结构使我们能够基于空间因素和分子内氢键的结合,为诱导螺旋旋向性的效率提出理论依据。