Hauser–Heck: Efficient Synthesis of γ-Aryl-β-ketoesters en Route to Substituted Naphthalenes
摘要:
gamma-Aryl-beta-ketoesters can be prepared in one step from aryl bromides and bis(trimethylsilyl) enol ethers using catalytic amounts of Pd(dba)(2)/t-Bu3P and stoichiometric amounts of Bu3SnF. The wide range of gamma-(hetero)aryl-beta-ketoesters that can be obtained illustrate the scope and limitations of this novel Hauser-Heck combination. gamma-Aryl-beta-ketoesters with a 1,3-dioxane acetal in the ortho position can easily be transformed into the hydroxy naphthoate in very good yield. Aqueous formic acid at 65 degrees C provides optimal conditions for this deprotective aromatization.
Hauser–Heck: Efficient Synthesis of γ-Aryl-β-ketoesters en Route to Substituted Naphthalenes
作者:Frederic Wagner、Klaus Harms、Ulrich Koert
DOI:10.1021/acs.orglett.5b02952
日期:2015.11.20
gamma-Aryl-beta-ketoesters can be prepared in one step from aryl bromides and bis(trimethylsilyl) enol ethers using catalytic amounts of Pd(dba)(2)/t-Bu3P and stoichiometric amounts of Bu3SnF. The wide range of gamma-(hetero)aryl-beta-ketoesters that can be obtained illustrate the scope and limitations of this novel Hauser-Heck combination. gamma-Aryl-beta-ketoesters with a 1,3-dioxane acetal in the ortho position can easily be transformed into the hydroxy naphthoate in very good yield. Aqueous formic acid at 65 degrees C provides optimal conditions for this deprotective aromatization.
Discovery and Optimization of Triazolopyrimidinone Derivatives as Selective NLRP3 Inflammasome Inhibitors
作者:David Harrison、Mark G. Bock、John R. Doedens、Christopher A. Gabel、M. Katharine Holloway、Arwel Lewis、Jane Scanlon、Andrew Sharpe、Iain D. Simpson、Pamela Smolak、Grant Wishart、Alan P. Watt
DOI:10.1021/acsmedchemlett.2c00242
日期:2022.8.11
osteoarthritis, and gout. The discovery of potent and specific NLRP3inhibitors could reduce the burden of several common morbidities. In this study, we identified a weakly potent triazolopyrimidone hit (1) following an in silico modeling exercise. This was optimized to furnish potent and selective small molecule NLRP3inflammasomeinhibitors. Compounds such as NDT-30805 could be useful tool molecules