Asymmetric Synthesis and Structural Elucidation of C2-Symmetrical Optically Active Macrocycles Consisting of Two Biaryl and Two α-Amino Acid Moieties
作者:Hongwu Zhao、Shi Su、Jin Cui、Xiuqing Song、Xiao Qin、Hailong Li、Hong Yan、Rugang Zhong、Liming Hu
DOI:10.1055/s-0030-1258582
日期:2010.10
A series of chiral C 2-symmetrical macrocycles containing two α-amino acids and two biaryl subunits have been designed and synthesized in moderate yields (36-53%). The absolute configurations of biaryl motifs in these chiral macrocycles were established by X-ray crystal structure analysis and CD measurements.
我们设计并合成了一系列含有两个δ-氨基酸和两个双芳基亚基的手性 C 2-对称大环,收率适中(36-53%)。通过 X 射线晶体结构分析和 CD 测量,确定了这些手性大环中双芳基基团的绝对构型。
Asymmetric Synthesis of Novel Biaryl Analogues with a Fused Chiral Bicyclic Bridge Using α-Amino Acids as Chiral Sources
A series of biaryl anologues with a fused bicyclic bridge were synthesised in a diastereoselectivity of up to 14:86 via an intramolecular cyclisation of an in situ generated N-acyliminium ion. The absolute configuration of products 9b-d and 10b-d was clearly defined by a combination of X-ray crystal-structural analysis, NOE difference, and CD experiments. biaryl - diastereoselectivity - cyclisation