肽精氨酸脱亚氨酶已被证明在包括多发性硬化症在内的神经退行性疾病中活跃。合成了基于乙内酰脲核心的,基于α-氨基酸的核心结构,在侧链上具有独特的杂环作为PAD酶的潜在非共价抑制剂。在研究的各种杂环中,带有咪唑部分的化合物23在该系列中显示出最高的效能,并对PAD2具有一定的选择性,并在体内进行了进一步研究。小鼠的药代动力学表明,当通过单剂量腹膜内注射以50 mg / kg的剂量施用化合物23时,血清和大脑中的C max分别为12.0±2.5和170±10 ng / mL 。在相同剂量下,化合物23在多发性硬化症(MS)的EAE小鼠模型中,他还逆转了身体残疾并清除了T细胞浸润的大脑。这一系列新颖的化合物显示出有望作为疾病改良剂用于MS潜在治疗的进一步发展。
肽精氨酸脱亚氨酶已被证明在包括多发性硬化症在内的神经退行性疾病中活跃。合成了基于乙内酰脲核心的,基于α-氨基酸的核心结构,在侧链上具有独特的杂环作为PAD酶的潜在非共价抑制剂。在研究的各种杂环中,带有咪唑部分的化合物23在该系列中显示出最高的效能,并对PAD2具有一定的选择性,并在体内进行了进一步研究。小鼠的药代动力学表明,当通过单剂量腹膜内注射以50 mg / kg的剂量施用化合物23时,血清和大脑中的C max分别为12.0±2.5和170±10 ng / mL 。在相同剂量下,化合物23在多发性硬化症(MS)的EAE小鼠模型中,他还逆转了身体残疾并清除了T细胞浸润的大脑。这一系列新颖的化合物显示出有望作为疾病改良剂用于MS潜在治疗的进一步发展。
[EN] INHIBITORS OF PEPTIDYL ARGININE DEIMINASE (PAD) ENZYMES AND USES THEREOF<br/>[FR] INHIBITEURS D'ENZYMES PEPTIDYL ARGININE DÉSIMINASES (PAD) ET LEURS UTILISATIONS
申请人:UNIV HEALTH NETWORK
公开号:WO2017027967A1
公开(公告)日:2017-02-23
The present application relates to a-substituted amino acid compounds of the Formula (I), compositions comprising these compounds and their use, in particular for the treatment of diseases, disorders or conditions characterized by or associated with the hypercitrullination of proteins by peptidyl arginine deiminase (PAD) enzymes.
A one-pot chemoenzymatic synthesis of (2S, 4R)-4-methylproline enables the first total synthesis of antiviral lipopeptide cavinafungin B
作者:Christian R. Zwick、Hans Renata
DOI:10.1016/j.tet.2018.09.046
日期:2018.11
We report an efficient ten-step (longest linear sequence) synthesis of antiviral natural product cavinafungin B in 37% overall yield. By leveraging a one-potchemoenzymaticsynthesis of (2S,4R)-4-methylproline and oxazolidine-tethered (AT (Boc)G-Rink resin) SPPS methodology, the assembly of our molecular target could be conducted in an efficient manner. This general strategy could prove amenable to
α-Conotoxin ImI Incorporating Stable Cystathionine Bridges Maintains Full Potency and Identical Three-Dimensional Structure
作者:Zoltan Dekan、Irina Vetter、Norelle L. Daly、David J. Craik、Richard J. Lewis、Paul F. Alewood
DOI:10.1021/ja206408q
日期:2011.10.12
The two disulfide bonds of alpha-conotoxin ImI, a peptide antagonist of the alpha 7 nicotinic acetylcholine receptor (nAChR), were systematically replaced with isosteric redox-stable cystathionine thioethers. Regioselective thioether formation was accomplished on solid support through substitution of a gamma-chlorohomoalanine by an intramolecular cysteine thiol to produce hybrid thioether/disulfide analogues (2 and 3) as well as a dual cystathionine analogue (4) that were found to be structurally homologous to alpha-conotoxin ImI by (1)H NMR. The antagonistic activity at the alpha 7 nAChR of cystathionine analogue 3 (pIC(50) = 6.41 +/- 0.09) was identical to that of alpha-conotoxin ImI (1, pIC(50) = 6.41 +/- 0.09), whereas those of 2 (pIC(50) = 5.96 +/- 0.09) and 4 (pIC(50) = 5.89 +/- 0.09) showed a modest decrease. The effect of oxidation of the thioethers to sulfoxides was also investigated, with significant changes in the biological activities observed ranging from a >30-fold reduction (28=O) to a 3-fold increase (38=O(B)) in potencies.
Noncovalent Protein Arginine Deiminase (PAD) Inhibitors Are Efficacious in Animal Models of Multiple Sclerosis
作者:Elizabeth J. Curiel Tejeda、Angelica M. Bello、Ewa Wasilewski、Adam Koebel、Shannon Dunn、Lakshmi P. Kotra
DOI:10.1021/acs.jmedchem.7b01102
日期:2017.11.9
Peptidyl arginine deiminases have been shown to be hyperactive in neurodegenerative diseases including multiplesclerosis. An α-amino acid-based core structure, derived from a hydantoin core, with unique heterocycles on the side chains were synthesized as potential noncovalent inhibitors of PAD enzymes. Among the various heterocycles investigated, compound 23, carrying an imidazole moiety, exhibited
肽精氨酸脱亚氨酶已被证明在包括多发性硬化症在内的神经退行性疾病中活跃。合成了基于乙内酰脲核心的,基于α-氨基酸的核心结构,在侧链上具有独特的杂环作为PAD酶的潜在非共价抑制剂。在研究的各种杂环中,带有咪唑部分的化合物23在该系列中显示出最高的效能,并对PAD2具有一定的选择性,并在体内进行了进一步研究。小鼠的药代动力学表明,当通过单剂量腹膜内注射以50 mg / kg的剂量施用化合物23时,血清和大脑中的C max分别为12.0±2.5和170±10 ng / mL 。在相同剂量下,化合物23在多发性硬化症(MS)的EAE小鼠模型中,他还逆转了身体残疾并清除了T细胞浸润的大脑。这一系列新颖的化合物显示出有望作为疾病改良剂用于MS潜在治疗的进一步发展。