[EN] INHIBITORS OF YAP/TAZ-TEAD ONCOPROTEINS, SYNTHESIS AND USE THEREOF [FR] INHIBITEURS D'ONCOPROTÉINES YAP/TAZ-TEAD, LEUR SYNTHÈSE ET LEUR UTILISATION
Haloacetylated enol ethers. 7 . Synthesis of 3-aryl-5-trihalomethylisoxazoles and 3-aryl-5-hydroxy-5-trihalomethyl-4,5-dihydroisoxazoles
作者:Marcos A. P. Martins、Geonir M. Siqueira、Giovani P. Bastos、Helio G. Bonacorso、Nilo Zanatta
DOI:10.1002/jhet.5570330612
日期:1996.11
cyclocondensed with hydroxylamine hydrochloride to afford the 3-aryl-5-hydroxy-5-trihalomethyl-4,5-dihydroisoxazoles 3a-g, 4a-f in good yield. The dehydratation of compounds 3a-g with concentrated sulfuric acid, led the corresponding 3-aryl-5-trichloromethylisoxazoles 5a-g. An alternative one-pot procedure yields 3-aryl-5-trihalomethylisoxazoles 5,6a-g directly by cyclocondesation of 1,2a-g with hydroxylamine
β-芳基-β-甲氧基乙烯基三卤甲基酮1a-g,2a-g [芳基= p -YC 6 H 4,其中Y = H,Me,OMe,F,Cl,Br,NO 2 ]与羟胺盐酸盐环缩合得到3-芳基-5-羟基-5-三卤甲基-4,5-二氢异恶唑3a-g,4a-f具有良好的收率。用浓硫酸使化合物3a-g脱水,得到相应的3-芳基-5-三氯甲基异恶唑5a-g。另一种一锅法直接通过1,2a-g的环缩构反应生成3-芳基-5-三卤代甲基异恶唑5,6a -g 在过量浓盐酸存在下,用盐酸羟胺处理。
Microwave-assisted synthesis and antimicrobial activity of 5-trihalomethyl-3-arylisoxazoles
作者:Marcos A. P. Martins、Pablo Machado、Luciana A. Piovesan、Alex F. C. Flores、Marli M. A. de Campos、Carolina Scheidt、Helio G. Bonacorso、Nilo Zanatta
DOI:10.1007/s00706-007-0849-1
日期:2008.8
A series of twelve 5-trihalomethyl-3-arylisoxazoles was synthesized and screened for antibacterial and antifungal activities. The compounds were synthesized from the cyclondensation of 1,1,1-trihalo-4-alkoxy-3-alken-2-ones [CX C-3(O)C(R-2)=C(R-1)OR, where X = Cl and F; R=Me; R-2=H; R-1=H, Me, F, Cl, Br, and NO2] with hydroxylamine hydrochloride through a rapid one-pot reaction via microwave irradiation. Some of the 5-trihalomethyl-3-arylisoxazoles exhibited good in vitro anti-Cryptococcus activity.