Synthesis and conformational analysis of a chiral fluorinated bilirubin analog lacking carboxyl groups
作者:Stefan E. Boiadjiev、David A. Lightner
DOI:10.1002/jhet.5570360424
日期:1999.7
An optically active analog 1 of etiobilirubin-IVγ with a single fluorine on each of the C(8) and C(12) alkyl groups has been synthesized in order to examine its potential for hydrogen bonding with fluorine. Circular dichroism spectroscopy reveals an unusually strong influence of 2,2,2-trifluoroethanol solvent on diastereo-selection of the M-helical conformation of (81S,121S)-1.
为了检查其与氟氢键合的潜力,已合成了乙胆红素-IVγ的光学活性类似物1,在每个C(8)和C(12)烷基上均具有单个氟。圆二色光谱揭示了2,2,2-三氟乙醇溶剂对(8 1 S,12 1 S)-1的M螺旋构象的非对映异构选择有异常强烈的影响。