Accessing the disallowed conformations of peptides employing amide-to-imidate modification
作者:Damodara N. Reddy、Ravula Thirupathi、Erode N. Prabhakaran
DOI:10.1039/c1cc13515e
日期:——
Selective modification of the C-terminal amide in peptides to dihydrooxazine (a novel stable imidate isostere) by intramolecular nucleophilic cyclo-O-alkylation of the corresponding N-(3-bromopropyl)amides results in constraining of the C-terminal residue in natively disallowed conformations both in crystals and in solution.
通过分子内亲核环氧烷基化反应,选择性地将肽的C末端酰胺修饰为二氢恶唑(一种新型稳定异氰酸酯类似物),即相应的N-(3-溴丙基)酰胺,导致在晶体和溶液中将C末端残基限制在天然情况下不允许的构象中。