Synthesis and intramolecular reactions of Tyr-Gly and Tyr-Gly-Gly related 6-O-glucopyranose esters
作者:Lidija Varga-Defterdarović、Gorana Hrlec
DOI:10.1016/j.carres.2003.07.011
日期:2004.1
6-O-(L-Tyrosylglycyl)- and 6-O-(L-tyrosylglycylglycyl)-D-glucopyranose were synthesized by condensation of the pentachlorophenyl esters of the respective di- and tripeptide with fully unprotected D-glucose. The intramolecular reactivity of the sugar conjugates was studied in pyridine-acetic acid and in dry methanol, at various temperatures and for various incubation times. The composition of the incubation
Histamine H3 receptor antagonists with peptidomimetic (keto)piperazine structures to inhibit Aβ oligomerisation
作者:Markus Falkenstein、David Reiner-Link、Aleksandra Zivkovic、Ian Gering、Dieter Willbold、Holger Stark
DOI:10.1016/j.bmc.2021.116462
日期:2021.11
build toxic oligomers. Design of disease modifying multi target directed ligand (MTDL) has been performed, which disable PPI on the one hand and on the other hand, act as procognitive antagonists at the histamine H3receptor (H3R). The synthetized compounds are structurally based on peptidomimetic amino acid-like structures mainly as keto, diketo-, or acyl variations of a piperazine moiety connected to
阿尔茨海默病 (AD) 是最突出的神经退行性疾病,具有很高的医疗需求。蛋白质-蛋白质-相互作用 (PPI) 相互作用在 AD 中具有关键作用,其中 β-淀粉样蛋白结构 (Aβ) 构建有毒低聚物。已经进行了疾病修饰多靶点定向配体 (MTDL) 的设计,其一方面禁用 PPI,另一方面作为组胺 H 3受体 (H 3 R) 的促认知拮抗剂。合成的化合物在结构上基于肽模拟氨基酸样结构,主要是与 H 3 R 药效团连接的哌嗪部分的酮基、二酮基或酰基变体。它们中的大多数在 H 3处表现出低纳摩尔亲和力R 和一些对 Aβ-单体具有良好亲和力的物质。所描述的结构-活性关系 (SAR) 为 MTDL 提供了新的可能性,其优化的配置文件结合了 AD 中的症状和潜在因果治疗方法。