[EN] INHIBITORS OF MYOCARDIN-RELATED TRANSCRIPTION FACTOR AND SERUM RESPONSE FACTOR (MRTF/SRF)-MEDIATED GENE TRANSCRIPTION AND METHODS FOR USE OF THE SAME [FR] INHIBITEURS DE LA TRANSCRIPTION DE GÈNES MÉDIÉE PAR LE FACTEUR APPARENTÉ À LA MYOCARDINE ET LE FACTEUR DE RÉPONSE SÉRIQUE (MRTF/SRF) ET PROCÉDÉS POUR LES UTILISER
Synthesis and activity of isoleucine sulfonamide derivatives as novel botulinum neurotoxin serotype A light chain inhibitors
摘要:
The botulinum neurotoxin (BoNT) is the most lethal protein known to man causing the deadly disease botulinum. The neurotoxin, composed of a heavy (HC) and light (LC) chain, work in concert to cause muscle paralysis. A therapeutic strategy to treat individuals infected with the neurotoxin is inhibiting the catalytic activity of the BoNT LC. We report the synthesis, inhibition study and computational docking analysis of novel small molecule BoNT/A LC inhibitors. A structure activity relationship study resulted in the discovery of D-isoleucine functionalized with a hydroxamic acid on the C-terminal and a biphenyl with chlorine at C- 2 connected by a sulfonamide linker at the N-terminus. This compound has a measured IC50 of 0.587 mu M for the BoNT/A LC. Computational docking analysis indicates the sulfonamide linker adopts a geometry that is advantageous for binding to the BoNT LC active site. In addition, Arg363 is predicted to be involved in key binding interactions with the scaffold in this study.
[EN] INHIBITORS OF MYOCARDIN-RELATED TRANSCRIPTION FACTOR AND SERUM RESPONSE FACTOR (MRTF/SRF)-MEDIATED GENE TRANSCRIPTION AND METHODS FOR USE OF THE SAME [FR] INHIBITEURS DE LA TRANSCRIPTION DE GÈNES MÉDIÉE PAR LE FACTEUR APPARENTÉ À LA MYOCARDINE ET LE FACTEUR DE RÉPONSE SÉRIQUE (MRTF/SRF) ET PROCÉDÉS POUR LES UTILISER
direct CH arylation of (hetero)arenes. Starting from an aniline, the corresponding arenediazonium ion is generated in situ and immediately reduced by vitamin C to an aryl radical that undergoes a homolytic aromatic substitution with a (hetero)arene. Notably, neither heating nor irradiation is required. This procedure is mild, operationally simple, and constitutes a greener approach to arylation.
Discovery of selective irreversible inhibitors of B-Lymphoid tyrosine kinase (BLK)
作者:Tiancheng Fu、Yingying Zuo、Zhenpeng Zhong、Xuan Chen、Zhengying Pan
DOI:10.1016/j.ejmech.2021.114051
日期:2022.2
understood. Herein, we present the discovery of a novel series of selective and irreversibleinhibitors of BLK with nanomolar potency against BLK in biochemical and cellular assays. Compound 25 demonstrated potent antiproliferative activities against several B cell lymphoma cell lines. These compounds constitute the first series of selectiveinhibitors developed for BLK and could help expedite the exploration
B 淋巴酪氨酸激酶 (BLK) 是 SRC 家族非受体酪氨酸激酶的成员,参与 B 细胞受体 (BCR) 信号通路和 B 细胞发育和功能。BLK 的失调与自身免疫性疾病和癌症有关。然而,缺乏用于 BLK 的良好工具化合物,并且对 BLK 介导生理和病理过程的分子机制知之甚少。在此,我们展示了一系列新型选择性和不可逆 BLK 抑制剂的发现,这些抑制剂在生化和细胞分析中具有纳摩尔级的 BLK 效力。化合物25证明了对几种 B 细胞淋巴瘤细胞系的有效抗增殖活性。这些化合物构成了为 BLK 开发的第一批选择性抑制剂,有助于加快 BLK 功能的探索。
Carbazole based Electron Donor Acceptor (EDA) catalysis for the synthesis of biaryl and aryl–heteroaryl compounds
A highly regioselective, carbazole based Electron Donor Acceptor (EDA) catalyzed synthesis of biaryl and aryl–heteroaryl compounds is described. Various indole and carbazole derivatives were screened for the Homolytic Aromatic Substitution (HAS) reaction. Tetrahydrocarbazole (THC) was very efficient for the HAS transformation and proceeded via a complex formation between diazonium salt and electron
The Stille cross coupling reactions on solid support. Link to solution phase directed ortho metalation. An ester linker approach to styryl, biaryl and heterobiaryl car☐ylic acids
The synthesis of the titled compounds by Stille cross coupling on Merrifield resin — linked halo benzoates with stannanes followed by LiOH hydrolysis is reported.
Optimization of novel nipecotic bis(amide) inhibitors of the Rho/MKL1/SRF transcriptional pathway as potential anti-metastasis agents
作者:Jessica L. Bell、Andrew J. Haak、Susan M. Wade、Paul D. Kirchhoff、Richard R. Neubig、Scott D. Larsen
DOI:10.1016/j.bmcl.2013.04.080
日期:2013.7
CCG-1423 (1) is a novel inhibitor of Rho/MKL1/SRF-mediated gene transcription that inhibits invasion of PC-3 prostatecancer cells in a Matrigel model of metastasis. We recently reported the design and synthesis of conformationally restricted analogs (e.g., 2) with improved selectivity for inhibiting invasion versus acute cytotoxicity. In this study we conducted a survey of aromatic substitution with