An Efficient Method for the Conversion of 2-Bromo-5-tosylpyrroles to the Corresponding 5-Tosylpyrrolinones as the D-Ring of Phycocyanobilin Derivatives
作者:Shuzo Takeda、Krishanthi Padmarani Jayasundera、Takashi Kakiuchi、Hideki Kinoshita、Katsuhiko Inomata
DOI:10.1246/cl.2001.590
日期:2001.6
2-Bromo-5-tosylpyrroles were efficiently converted to the corresponding 5-tosylpyrrolinones as the D-ring of phycocyanobilin (PCB) derivatives by treating with DMSO and Zn in TFA in the presence of a catalytic amount of iodine. PCB derivatives modified at the D-ring were prepared in free acid forms employing the resulting 5-tosylpyrrolinones toward structure/function analysis of phytochrome.
在一定量的
碘催化下,在反式
脂肪酸中用
二甲基亚砜和
锌处理 2-
溴-5-对
甲苯磺酰基
吡咯烷,可有效地将其转化为相应的 5-对
甲苯磺酰基
吡咯烷酮,作为植物
花青素(PCB)衍
生物的 D 环。利用得到的 5-对
甲苯磺酰基
吡咯烷酮对植物色素进行结构/功能分析。