Synthesis and Characterization of Enzymatically Biodegradable PEG and Peptide-Based Hydrogels Prepared by Click Chemistry
作者:Maarten van Dijk、Cornelus F. van Nostrum、Wim E. Hennink、Dirk T. S. Rijkers、Rob M. J. Liskamp
DOI:10.1021/bm1002637
日期:2010.6.14
Herein we describe the synthesis and rheological characterization of a series of enzymatically sensitive PEG and peptide-based hydrogels by the Cu(I)-catalyzed 1,3-dipolar cycloaddition reaction. The hydrogels were synthesized by a combination of alkyne-functionalized star-shaped PEG molecules (two 4-armed PEGs with Mw 10 and 20 kDa, respectively, and one 8-armed PEG of 20 kDa) and the protease-sensitive
在这里,我们描述了通过Cu(I)催化的1,3-偶极环加成反应,合成了一系列酶敏性PEG和基于肽的水凝胶,并对其进行了流变学表征。水凝胶是由炔官能化的星形PEG分子的组合合成的(具有两个4武装的PEG中号瓦特分别为10和20kDa,和一个8武装PEG 20kDa的的)和蛋白酶敏感双叠氮肽,N α - (叠氮基) - d -丙氨酰苯丙氨酰lysyl-(2-叠氮基乙基) -酰胺(6中的CuSO的存在下)4和抗坏血酸钠水溶液。溶胀率和储能模量(G可以通过几个参数,例如水凝胶的初始固体含量,PEG衍生物的分子量和PEG分子的结构(4臂对8臂的PEG衍生物)来定制水凝胶的′′)。肽序列d -Ala-Phe-Lys对蛋白酶纤溶酶和胰蛋白酶敏感,使水凝胶可生物降解。
Targeting the Unique Mechanism of Bacterial 1-Deoxy-<scp>d</scp>-xylulose-5-phosphate Synthase
作者:David Bartee、Caren L. Freel Meyers
DOI:10.1021/acs.biochem.8b00548
日期:2018.7.24
bisubstrate inhibitors bearing an acetylphosphonate (AP) pyruvate mimic and a distal negative charge mimicking the phosphoryl group of d-GAP, designed to target the unique form of DXP synthase that binds LThDP and d-GAP in a ternary complex. A d-phenylalanine-derived triazole acetylphosphonate (d-PheTrAP) emerged as the most potent inhibitor in this series, displaying slow, tight-binding inhibition
Histone deacetylase inhibitors: synthesis of cyclic tetrapeptides and their triazole analogs
作者:Erinprit K. Singh、Lidia A. Nazarova、Stephanie A. Lapera、Leslie D. Alexander、Shelli R. McAlpine
DOI:10.1016/j.tetlet.2010.06.050
日期:2010.8
Synthesis of nine macrocyclic peptide HDAC inhibitors and three triazole derivatives is described. HDAC inhibitory activity of these compounds against HeLa cell lysate is evaluated. The biological data demonstrate that incorporation of a triazole unit improves the HDAC inhibitory activity.
描述了九个大环肽 HDAC 抑制剂和三个三唑衍生物的合成。评估了这些化合物对 HeLa 细胞裂解物的 HDAC 抑制活性。生物学数据表明,三唑单元的掺入提高了 HDAC 抑制活性。
Preparation of (R)-2-azidoesters from 2-((p-nitrobenzene)sulfonyl)oxy esters and their use as protected amino acid equivalents for the synthesis of di- and tripeptides containing D-amino acid constituents
作者:Robert V. Hoffman、Hwa-Ok Kim
DOI:10.1016/s0040-4020(01)92245-8
日期:1992.4
(R)-2-Azidoesters and their derived (R)-2-azido acids are readily prepared from common aminoacids by an inversion methodology that employs (S)-2-nosyloxyesters as key intermediates. The (R)-2- azidoesters can be used as protected aminoacid equivalents in peptide synthesis. Basic hydrolysis frees the carboxyl group. Triphenylphosphine/water is used to free the amine group. By these reactions a variety