Influence of chain length on the activity of tripeptidomimetic antagonists for CXC chemokine receptor 4 (CXCR4)
作者:Markus Baumann、Mohammad Musarraf Hussain、Nina Henne、Daniel Moya Garrote、Stefanie Karlshøj、Torgils Fossen、Mette M. Rosenkilde、Jon Våbenø、Bengt Erik Haug
DOI:10.1016/j.bmc.2016.11.036
日期:2017.1
close analogues of our recently published scaffold-based tripeptidomimetic CXCR4 antagonists, containing positively charged guanidino groups in R1 and R2, and an aromatic group in R3. While contraction/elongation of the guanidine carrying side chains (R1 and R2) resulted in loss of activity, introduction of bromine in position 1 on the naphth-2-ylmethyl moiety (R3) resulted in an EC50 of 61 μM (mixture
在这里,我们报告了我们最近发表的基于支架的三肽模拟CXCR4拮抗剂的一系列紧密类似物,在R 1和R 2中包含带正电荷的胍基,在R 3中包含芳族基。带有胍基的侧链(R 1和R 2)的收缩/伸长导致活性降低,而在萘-2-基甲基部分(R 3)的1位引入溴导致EC 50针对野生型CXCR4的61μM(非对映异构体混合物);因此,这些三肽模拟物的拮抗活性似乎适合于芳族部分的优化。此外,对于带有萘-2-基甲基取代基的类似物,我们观察到Pictet-Spengler样环化副反应取决于R 1取代基的性质。