prepared from the methane-sulfonate of -(+)-2-butanol and bichromophoric bilirubin-IXα show bisignate circular dichroism curves, with the mono-ester Cotton effects being up to 10-fold more intense than the diester -- data in accord with the presence of folded, partially intramolecularly hydrogen-bonded conformations for mono-esters.
由-(+)-
2-丁醇的
甲烷磺酸盐和双色性
胆红素-IXα制备的旋光酯显示双符号圆二色性曲线,单酯棉效应比二酯强多达10倍-数据符合单酯的折叠,部分分子内氢键构象的存在。