Enforced Helicity: Efficient Access to Self-Organized Helical Molecular Strands by the Imine Route
作者:Kevin M. Gardinier、Richard G. Khoury、Jean-Marie Lehn
DOI:10.1002/1521-3765(20001117)6:22<4124::aid-chem4124>3.0.co;2-m
日期:2000.11.17
These molecular strands are shown to adopt helical conformations of 1.5 and 2.5 turns, respectively. The helical shape of 1 has been confirmed and structurally characterized by X-ray crystallography. The results indicate that the pyrimidine-hydrazone unit is a satisfatory helicity codon, so that the facile hydrazone formation provides an efficient procedure for generating helical structures. This
两个低聚杂环醛 8 和 16 与双肼 17 缩合得到双腙1 和 2。显示这些分子链分别采用 1.5 和 2.5 圈的螺旋构象。1 的螺旋形状已被 X 射线晶体学证实并在结构上表征。结果表明嘧啶-腙单元是一个令人满意的螺旋密码子,因此容易的腙形成为产生螺旋结构提供了有效的方法。这极大地拓宽了基于设计的杂环序列来增强分子链螺旋性的方法的范围,并为各种衍生结构开辟了有趣的途径。