A new entry to phenanthridine ring systems via sequential application of Suzuki and the modified Pictet–Spengler reactions
作者:Anil K. Mandadapu、Mohammad Saifuddin、Piyush K. Agarwal、Bijoy Kundu
DOI:10.1039/b905696c
日期:——
A mild, efficient and versatile method has been developed for the two step synthesis of phenanthridine ring systems using the Suzuki and the modified PictetâSpengler strategy. The strategy involves synthesis of a substrate in which an aryl amine is tethered to an activated arene ring at the carbon ortho to the activated carbon nucleophile so as to facilitate the formation of phenanthridine ring viaÏ-cyclization.
(pE)-modified β-amyloid (Aβ) peptides. Preventing the generation of pE-Aβs by QC inhibition has been suggested as a novel approach to a disease-modifying therapy for AD. In this work, a series of diphenyl conjugated imidazole derivatives (DPCIs) was rationally designed and synthesized. Analogues with this scaffold exhibited potent inhibitory activity against human QC (hQC) and good in vitro blood–brain