One-Carbon Homologation of Pyrrole Carboxaldehyde via Wittig Reaction and Mild Hydrolysis of Vinyl Ether – toward the Synthesis of a Sterically Locked Phytochrome Chromophore
作者:Yutaka Ukaji、Ryo Sakata、Takahiro Soeta
DOI:10.3987/com-14-13157
日期:——
Mild hydrolysis of vinyl ether derived from a pyrrole carboxaldehyde corresponding to the B,C-ring component of phytochromobilin chromophore was achieved by treatment with oxalyl chloride in chloroform in the presence of water and ethanol to afford a one-carbon homologated aldehyde. This aldehyde was applied to the synthesis of the sterically locked 15E-anti CD-ring component of the chromophore. Furthermore, the aldehyde could be converted to the intermediate for the sterically locked 5Z-anti AB-ring component.