Comparative Study of the Synthesis and Structural and Physicochemical Properties of Diketopiperazines vs Aza-diketopiperazines
作者:Pierre Regenass、Damien Bosc、Stéphanie Riché、Patrick Gizzi、Marcel Hibert、Lydia Karmazin、A. Ganesan、Dominique Bonnet
DOI:10.1021/acs.joc.6b02895
日期:2017.3.17
Aza-diketopiperazines (aza-DKPs) represent an underprivileged motif obtained by scaffold hopping of 2,5-diketopiperazines (2,5-DKPs). Herein, we compare the synthesis and the structural and physicochemical properties of aza-DKP 4 vs 2,5-DKP 7. Thus, X-ray and 1H NMR studies show that aza-DKP 4 is a rigid and nonflat scaffold like the 2,5-DKP 7. Moreover, the replacement of one Cα-stereogenic center by a nitrogen atom
氮杂-二酮哌嗪(aza-DKPs)代表通过脚手架跳2,5-二酮-哌嗪(2,5-DKPs)获得的弱势基序。在这里,我们比较了aza-DKP 4与2,5-DKP 7的合成以及结构和理化性质。因此,X射线和1 H NMR研究表明aza-DKP 4像2,5-DKP 7一样是刚性且不平坦的支架。此外,更换一种C的α通过在水中的溶解度和微粒体稳定性两者的显著改善氮原子结果-stereogenic中心。