Development of methodologies for the regioselective synthesis of four series of regioisomer isoxazoles from β-enamino diketones
作者:Raí G. M. Silva、Michael J. V. da Silva、Andrey P. Jacomini、Sidnei Moura、Davi F. Back、Ernani A. Basso、Fernanda A. Rosa
DOI:10.1039/c7ra13343j
日期:——
are reported for the regioselective synthesis of four series of regioisomer isoxazoles from cyclocondensation of β-enamino diketones and hydroxylamine hydrochloride. Regiochemical control was achieved by varying reaction conditions and substrate structure. The mild reaction conditions used to access 4,5-disubstituted, 3,4-disubtituted, and 3,4,5-trisubstituted regioisomer isoxazoles, as well as the pharmacological
报告了四种方法,用于从 β-烯氨基二酮和盐酸羟胺的环缩合反应中区域选择性合成四种区域异构体异恶唑。通过改变反应条件和底物结构来实现区域化学控制。用于获得 4,5-二取代、3,4-二取代和 3,4,5-三取代区域异构体异恶唑的温和反应条件,以及产品的药理和合成潜力,使这些新方法非常强大。