Synthesis of furyl-, furylvinyl-, thienyl-, pyrrolinylquinazolines and isoindolo[2,1-a]quinazolines
作者:V. P. Zaytsev、E. L. Revutskaya、M. G. Kuz´menko、R. A. Novikov、F. I. Zubkov、E. A. Sorokina、E. V. Nikitina、F. A. A. Toze、A. V. Varlamov
DOI:10.1007/s11172-015-1016-1
日期:2015.6
A method for the synthesis of hydrogenated furyl-, furylvinyl-, thienyl-, and pyrrolinyl-substituted quinazolin-4-ones was developed. A possibility of the reaction of 2-furylquinazolines with maleic anhydride was demonstrated. A number of quinazolines obtained were subjected to a primary bioscreening on inhibition of acetylcholinesterase.
centers and three new rings in one synthetic step. Isomeric 2,4a-epoxyisoindolo[1,2-b]quinazolines are obtained by one-pot, three-component condensation reactions of allylamine, isatoic anhydride and furaldehydes involving the same IMDAF reaction as the key step. Some useful transformations including halogenation, hydrogenation, Prilezhaev epoxidation, and esterification of the synthesized epoxyisoindoloquinazolines
摘要 描述了通过2-呋喃基喹唑啉酮的串联酰化/分子内Diels-Alder呋喃(IMDAF)反应桥接五环氮杂环的有效方法。α,β-不饱和酸酐与2-呋喃基-2,3-二氢喹唑啉-4-酮的反应平均产率为6b,9-环氧异吲哚并[2,1- a ]喹唑啉。在这种情况下,exo -IMDAF反应以优异的非对映选择性进行,在一个合成步骤中给出了五个立体异构中心和三个新环。异构2,4a-环氧异吲哚[1,2- b对苯二甲酰喹啉是通过烯丙基胺,isatoic酸酐和呋喃甲醛的一锅三组分缩合反应获得的,该反应与关键步骤相同。还证明了一些有用的转化,包括合成的环氧异吲哚并喹唑啉的卤化,氢化,普列列夫环氧化和酯化。 描述了通过2-呋喃基喹唑啉酮的串联酰化/分子内Diels-Alder呋喃(IMDAF)反应桥接五环氮杂环的有效方法。α,β-不饱和酸酐与2-呋喃基-2,3-二氢喹唑啉-4-酮的反应平均产率为6b,9-环氧异吲哚并[2,1-