阿尔茨海默病 (AD) 是最常见的痴呆症,其病理标志之一是神经原纤维缠结 (NFT) 的形成。这些缠结由磷酸化的 Tau 片段组成。天冬酰胺内肽酶 (AEP) 是一种关键的 Tau 裂解酶,可生成易于聚集的 Tau 片段。抑制 AEP 以降低有毒 Tau 片段形成的水平可能是一种有前途的治疗策略。在这里,我们报告了第一个具有不可逆结合模式的正位、选择性、口服生物可利用的脑渗透抑制剂。我们概述了从可逆分子开始的该系列的发展,并在体外和体内证明了 AEP 的抑制和 Tau N368 片段的减少之间的联系。
[EN] TUNABLE PROBES FOR SELECTIVE PROTEIN LABELLING AND ENZYME INHIBITION<br/>[FR] SONDES ACCORDABLES POUR MARQUAGE SÉLECTIF DE PROTÉINES ET INHIBITION ENZYMATIQUE
申请人:AAA CHEMISTRY APS
公开号:WO2018234483A1
公开(公告)日:2018-12-27
The present invention relates to methods of selectively reacting a compound of Formula (I) with a cysteine residue, which is contained in the sequence of a polypeptide. The methods may be employed in the fields of labelling polypeptides, detecting polypeptides, modulation of enzyme activity, isolation of polypeptides, methods of diagnostics, methods of prevention or treatment of clinical conditions or methods of transportation of compounds e.g. prodrugs.
diprotected derivative BocNHNH(Boc)CH(2)CO(2)H and suppressed with the fully protected acid. Despite the instability of the imidocarbonate group toward acids and bases, a low-cost and effective route was sought for the preparation of the tris(Boc)-protected derivative. The N,N,N'-tris(Boc)hydrazinoacetic acid could be introduced on the solid phase after or before peptide elongation using Fmoc/tert-butyl
基于部分或完全Boc保护的肼基乙酸衍生物的固相偶联,报道了制备α-肼基乙酰基肽的新方法。对于单保护衍生物BocNHNHCH(2)CO(2)H,发现活化和偶合过程中活化酯的不想要的聚合反应程度都很高,但可以用双保护衍生物BocNHNH(Boc)CH(2)CO( 2)H,并用完全保护的酸抑制。尽管亚氨基碳酸酯基团对酸和碱不稳定,但仍寻求一种低成本且有效的途径来制备三(Boc)-保护的衍生物。N,N,N′-三(Boc)肼基乙酸可以在肽延长之后或之前使用Fmoc /叔丁基化学方法引入固相。在后一种情况下,模型固体支持物的HR MAS NMR分析表明,在重复进行的哌啶处理过程中,一个Boc基团的部分损失。尽管存在这种轻微的不稳定性,但发现N,N,N'-三(Boc)肼基乙酸是一种非常方便的试剂,可用于稳定,易于扩展的肼基肽的高产率和高纯度制备。
NOVEL AZAPEPTIDE OR AZAPEPTIDOMIMETIC COMPOUNDS INHIBITING BCRP AND/OR P-GP
申请人:Paris Joelle
公开号:US20120010161A1
公开(公告)日:2012-01-12
The present invention relates to compounds of azapeptide or azapeptidomimetic type of formula (I):
in which R
1
, R
2
, R
3
, X
1
, X
2
, X
3
, X
4
and Y are as defined in claim
1,
to pharmaceutical compositions containing them and to such compounds as adjuvant for an anticancer or anti-infectious medicament.
A solid-phase fluorenylmethyloxycarbonyl (Fmoc)-based synthesis strategy is described for "mixed" aza-beta(3)-peptides as well as a convenient general approach for their required building blocks, the aza-beta(3)-amino acid residues (aza-beta(3)-aa). These monomers allow the synthesis of relatively large quantities of pure mixed aza-beta(3)-peptides. The required Fmoc-substituted aza-beta(3)-amino acids are accessible by convenient synthesis, and a number of monomers including those containing side chains with functional groups have been synthesized. The method was applied toward the solid-phase synthesis of aza-beta(3)-peptide mimetics of a biologically active histone H4 sequence.
Design, synthesis and cardioprotective effect of a new class of dual-acting agents: Phenolic tetrahydro-β-carboline RGD peptidomimetic conjugates
作者:Wei Bi、Jianhui Cai、Sanguang Liu、Michèle Baudy-Floc’h、Lanrong Bi
DOI:10.1016/j.bmc.2007.08.022
日期:2007.11
In this study, a new class of phenolic tetrahydro-beta-carboline RGD peptidomimetic conjugates was designed and synthesized. The radical scavenging activities of these newly synthesized compounds 12a-c were evaluated in PC 12 cell survival assays. The NO scavenging activities of these compounds were confirmed in the acetylcholine-induced vasorelaxation assay. Compounds 12a-c were efficacious in a rat arterial thrombosis model, and were active in ADP- or PAF-induced in vitro platelet aggregation assays, which Suggests these compounds also possess anti-thrombotic activity. The beneficial effects of dual-acting agent 12c were demonstrated on the ischemia-reperfusion induced cardiac infarct size and oxidative change in an in vivo rat model. (C) 2007 Elsevier Ltd. All rights reserved.