Elmuradov Burkhon, Okmanov Rasul, Juraev Bakhromjon, Dräger Gerald, Butenschön Holger
Leibniz Universität Hannover, Institut für Organische Chemie, Schneiderberg 1B, D-30167, Hannover, Germany.
Institute of the Chemistry of Plant Substances, Academy of Sciences of Uzbekistan, 100170, Mirzo-Ulugbek str. 77, Tashkent, Uzbekistan.
ChemistryOpen. 2024 Dec;13(12):e202400197. doi: 10.1002/open.202400197. Epub 2024 Sep 27.
A number of new deoxyvasicinone (2,3-dihydropyrrolo[2,1-b]quinazolin-9(1H)-one) and mackinazolinone (6,7,8,9-tetrahydro-11H-pyrido[2,1-b]quinazolin-11-one) derivatives with aryl substituents at C7/C8 and at C5 are reported. These compounds are rare representatives of their kind and were prepared in high yields by Suzuki-Miyaura cross-coupling reactions between 7-bromo-2,3-dihydro[2,1-b]quinazoline-9-(1H)-one, 5,7-dibromo-2,3-dihydro[2,1-b]quinazoline-9-(1H)-one or 8-bromomackinazolinone and respective arylboronic acids with palladium acetate as the catalyst. The products were characterized spectroscopically and, in addition, by X-ray crystal structure analyses in six cases.
报道了一些在C7/C8和C5处带有芳基取代基的新型去氧哇巴因酮(2,3-二氢吡咯并[2,1-b]喹唑啉-9(1H)-酮)和麦基那唑啉酮(6,7,8,9-四氢-11H-吡啶并[2,1-b]喹唑啉-11-酮)衍生物。这些化合物是该类化合物中罕见的代表物,通过7-溴-2,3-二氢[2,1-b]喹唑啉-9-(1H)-酮、5,7-二溴-2,3-二氢[2,1-b]喹唑啉-9-(1H)-酮或8-溴麦基那唑啉酮与相应的芳基硼酸在醋酸钯作为催化剂的条件下进行铃木-宫浦交叉偶联反应,以高收率制备得到。对产物进行了光谱表征,此外,还对其中6个案例进行了X射线晶体结构分析。