2-Substituted-1-naphthols as potent 5-lipoxygenase inhibitors with topical antiinflammatory activity
作者:Douglas G. Batt、George D. Maynard、Joseph J. Petraitis、Joan E. Shaw、William Galbraith、Richard R. Harris
DOI:10.1021/jm00163a058
日期:1990.1
described. These compounds are potent inhibitors of the 5-lipoxygenase from RBL-1 cells and also inhibitbovine seminal vesicle cyclooxygenase. Structure-activity relationships for these two enzymes are different, implying specific enzyme inhibition rather than a nonspecific antioxidant effect. 2-(Aryl-methyl)-1-naphthols are among the most potent 5-lipoxygenaseinhibitors reported (IC50 values generally
Transition-Metal-Free Alkylative Aromatization of Tetralone Using Alcohol/Amino Alcohol towards the Synthesis of Bioactive Naphthol and Benzo[<i>e</i>/<i>g</i>]indole Derivatives
作者:Akash S. Ubale、Gokul S. Londhe、Moseen A. Shaikh、Boopathy Gnanaprakasam
DOI:10.1021/acs.joc.2c00779
日期:2022.6.17
Herein, we report alkylative aromatization of tetralone for the synthesis of bioactive naphthols and benzo[e/g]indole derivatives using alcohols in the presence of NaOH via an aerobic oxidative cross-coupling protocol. This is a general and transition-metal-free method, which uses an inexpensive base, avoids inert conditions, and furnishes water and hydrogen peroxide as the byproducts. Moreover, this
在此,我们报告了四氢萘酮的烷基芳构化,用于在NaOH 存在下通过需氧氧化交叉偶联方案使用醇合成生物活性萘酚和苯并[ e / g ]吲哚衍生物。这是一种通用且不含过渡金属的方法,它使用廉价的碱,避免惰性条件,并提供水和过氧化氢作为副产品。此外,该方法具有广泛的底物范围,并获得了独有的区域选择性。
Experimental and Computational Studies on the Ruthenium-Catalyzed Dehydrative C–H Coupling of Phenols with Aldehydes for the Synthesis of 2-Alkylphenol, Benzofuran, and Xanthene Derivatives
作者:Nuwan Pannilawithana、Bimal Pudasaini、Mu-Hyun Baik、Chae S. Yi
DOI:10.1021/jacs.1c06887
日期:2021.8.25
with benzaldehyde and 2-propanol/2-propanol-d8 (kH/kD = 2.3 ± 0.3). The carbon isotope effect was observed on the benzylic carbon of the alkylation product from the coupling reaction of 3-methoxyphenol with 4-methoxybenzaldehyde (C(3) 1.021(3)) and on both benzylic and ortho-arene carbons from the coupling reaction with 4-trifluorobenzaldehdye (C(2) 1.017(3), C(3) 1.011(2)). The Hammett plot from the
阳离子Ru-H配合物[(C 6 H 6 )(PCy 3 )(CO)RuH] + BF 4 - ( 1 )被发现是酚类和醛类脱水C-H偶联反应生成的有效催化剂2-烷基苯酚产品。酚类与支链醛的偶联反应选择性地形成1,1-二取代苯并呋喃,而与水杨醛的偶联反应产生呫吨衍生物。从 3-甲氧基苯酚与苯甲醛和 2-丙醇/2-丙醇-d 8 ( k H / k D ) 的偶联反应中观察到正常的氘同位素效应= 2.3 ± 0.3)。在 3-甲氧基苯酚与 4-甲氧基苯甲醛 (C(3) 1.021(3)) 偶联反应的烷基化产物的苄基碳以及与4-三氟苯甲醛 (C(2) 1.017(3)、C(3) 1.011(2))。来自 3-甲氧基苯酚与对位取代苯甲醛p -XC 6 H 4 CHO (X = OMe, Me, H, F, Cl, CF 3 ) 的偶联反应的 Hammett 图显示了 V 形线性斜率。通过 NMR 从1