ROCK 是 Rho 的下游调节剂之一,控制肌动球蛋白细胞骨架组织、应力纤维形成、平滑肌收缩和细胞迁移。ROCK 在脑和冠状血管痉挛、高血压、癌症和动脉硬化的病理中起重要作用。药物诱导的 ROCK 全身性抑制会影响 Rho 激酶的病理和生理功能,导致低血压、心率加快、淋巴细胞计数减少,最终导致心血管衰竭。为了克服全身性 ROCK 抑制的不利影响,我们开发了一种 ROCK 抑制剂的生物还原性前药法舒地尔,它在缺氧条件下选择性地发挥作用。通过用生物还原性 4-硝基苄基掩蔽 fasudil 的活性位点,我们合成了一种在常氧环境中无活性的 fasudil 前药。由缺氧引发的保护基团的还原揭示了导致母体分子断裂的给电子取代基。与母体化合物相比,在常氧条件下,法舒地尔前药对 ROCK 的活性显着降低,但在严重缺氧条件下,前药在抑制 ROCK 活性方面非常有效。在缺氧条件下,前药对患病的肺动脉平滑肌
Metal–Organic Layers for Synergistic Lewis Acid and Photoredox Catalysis
作者:Yangjian Quan、Guangxu Lan、Yingjie Fan、Wenjie Shi、Eric You、Wenbin Lin
DOI:10.1021/jacs.9b12593
日期:2020.1.29
Metyrapone. The superior catalytic performance of Hf12-Ir-OTf over a mixture of photoredox catalyst and stoichiometric amounts of Brønstedacids or sub-stoichiometric amounts (20 mol%) of Lewis acids is attributed to the close proximity (1.2 nm) between photoredox and Lewis acid catalysts in Hf12-Ir-OTf, which not only facilitates the reaction between the carbon radical and the activated heteroarene but
cyclization, and salification. The process afforded 1 in 67.1% overall yield (based on 5-isoquinoline sulfonyl chloride) with 99.94% purity. Compared to the earlier published methodologies, the use of homopiperazine or its derivatives as intermediates was avoided. The salient features of this environmentally friendly synthetic route include easily available starting materials and operational simplicity, which
Hydroxyamino- and amino-substituted pyridine analogs for treating rho kinase-mediated diseases and conditions
申请人:Alcon Research, Ltd.
公开号:US07867999B1
公开(公告)日:2011-01-11
Methods for using hydroxyamino- and amino-substituted pyridine analogs are disclosed herein to treat rho kinase-mediated diseases or rho kinase-mediated conditions, including controlling intraocular pressure and treating glaucoma, are disclosed. Ophthalmic pharmaceutical compositions useful in the treatment of eye diseases such as glaucoma, and additionally useful for controlling intraocular pressure, the compositions comprising an effective amount of hydroxyamino- and amino-substituted pyridine analogs, are disclosed herein.
Radical and ionic
<i>meta</i>
-C–H functionalization of pyridines, quinolines, and isoquinolines
作者:Hui Cao、Qiang Cheng、Armido Studer
DOI:10.1126/science.ade6029
日期:2022.11.18
Carbon-hydrogen (C−H) functionalization of pyridines is a powerful tool for the rapid construction and derivatization of many agrochemicals, pharmaceuticals, and materials. Because of the inherent electronic properties of pyridines, selective meta -C−H functionalization is challenging. Here, we present a protocol for highly regioselective meta -C−H trifluoromethylation, perfluoroalkylation, chlorination