Peptide-based covalent inhibitors of MALT1 paracaspase
摘要:
Potent and selective substrate-based covalent inhibitors of MALT1 protease were developed from the tetrapeptide tool compound Z-VRPR-fmk. To improve cell permeability, we replaced one arginine residue. We further optimized a series of tripeptides and identified compounds that were potent in both a GloSensor reporter assay measuring cellular MALT1 protease activity, and an OCI-Ly3 cell proliferation assay. Example compounds showed good overall selectivity towards cysteine proteases, and one compound was selected for further profiling in ABL-DLBCL cells and xenograft efficacy models.
Optimization and Anti-Cancer Properties of Fluoromethylketones as Covalent Inhibitors for Ubiquitin C-Terminal Hydrolase L1
作者:Aaron D. Krabill、Hao Chen、Sajjad Hussain、Chad S. Hewitt、Ryan D. Imhoff、Christine S. Muli、Chittaranjan Das、Paul J. Galardy、Michael K. Wendt、Daniel P. Flaherty
DOI:10.3390/molecules26051227
日期:——
this end a study was carried out to fully characterize and optimize the irreversible covalent UCHL1 inhibitor VAEFMK. Structure-activity relationship studies identified modifications to improve activity versus the target and a full cellular characterization was carried out for the first time with this scaffold. The studies produced a new inhibitor, 34, with an IC50 value of 7.7 µM against UCHL1 and no
Lithium Binaphtholate-Catalyzed Michael Reaction of Malonates with Maleates and Its Application to the Enantioselective Synthesis of Tricarboxylic Acid Derivatives
The Michael reaction of malonates with maleates afforded the corresponding adducts in high yields with high enantioselectivities (up to 98% enantiomeric excess (ee)) by using dilithium 3,3'-dichlorobinaphtholate as a catalyst. The obtained Michael adducts could be converted to optically active tricarboxylic acid (TCA) derivatives via the Krapcho reaction.
combination of a new bifunctional phosphine and an acrylate generate a zwitterion in situ and it serves as an efficient catalyst for asymmetric reactions through a homogeneous ion‐pairing mode. This new catalytic system has been successfully applied to Mannich‐typereactions to give excellent results and it demonstrates a broad substrate scope. Such reactivity is not accessible with general organophosphine catalytic
In vitro and ex vivo inhibition of hepatitis A virus 3C proteinase by a peptidyl monofluoromethyl ketone
作者:Tina S Morris、Sven Frormann、Shirley Shechosky、Christopher Lowe、Manjinder S Lall、Verena Gauss-Müller、Robert H Purcell、Suzanne U Emerson、John C Vederas、Bruce A Malcolm
DOI:10.1016/s0968-0896(97)88649-x
日期:1997.5
configuration like those of the mammalian serine proteinases (Malcolm, B. A. Protein Science 1995, 4, 1439). A peptidyl monofluoromethyl ketone (peptidyl-FMK) based on the preferred peptide substrates for HAV 3C proteinase was generated by first coupling the precursor, N,N-dimethylglutamine fluoromethylalcohol, to the tripeptide, Ac-Leu-Ala-Ala-OH, and then oxidizing the product to the corresponding peptidyl-FMK
甲型肝炎病毒(HAV)3C蛋白酶是负责处理病毒多蛋白的酶。尽管是半胱氨酸蛋白酶,但它表现出类似于哺乳动物丝氨酸蛋白酶的活性位点构型(Malcolm,BA Protein Science 1995,4,1439)。通过首先将前体N,N-二甲基谷氨酰胺氟甲基醇与三肽Ac-Leu-Ala-Ala-OH偶联,然后生成基于HAV 3C蛋白酶优选肽底物的肽基单氟甲基酮(peptidyl-FMK)。将产物氧化为相应的肽基-FMK(Ac-LAAQ'-FMK)。发现该分子是HAV 3C的不可逆灭活剂,其二级速率常数为3.3 x 10(2)M-1 s-1。19 F NMR光谱表明在氟甲基酮使酶失活时氟化物的置换。13C标记的抑制剂和HAV 3C蛋白酶之间的复合物的NMR光谱表明形成了(烷硫基)甲基酮。使用体外转录/翻译产生的各种底物进行的多蛋白加工研究表明,即使是最快速的蛋白水解事件,如2A-2B和2C-3A
[EN] NOVEL CORONAVIRUS MAIN PROTEASE INHIBITOR, AND PREPARATION METHOD THEREFOR AND USE THEREOF<br/>[FR] INHIBITEUR PRINCIPAL DE PROTÉASE DU NOUVEAU CORONAVIRUS, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 一种新型冠状病毒主蛋白酶的抑制剂及其制备方法和用途
申请人:UNIV SICHUAN
公开号:WO2022021841A1
公开(公告)日:2022-02-03
公开了一种新型冠状病毒主蛋白酶的抑制剂及其制备方法和用途。具体提供式(I)所示化合物、或其药学上可接受的盐、或其立体异构体、或其旋光异构体、或其同位素替代形式。该化合物能够有效抑制SARS-CoV-2 M pro活性,可以用来制备SARS-CoV-2 M pro抑制剂,阻断SARS-CoV-2病毒在患者体内的复制和转录。所述化合物在制备SARS-CoV-2 M pro抑制剂,抗SARS-CoV-2的药物,以及预防和/或治疗新型冠状病毒肺炎的药物中具有非常好的应用前景。