The IMDAV approach towards thieno- and furoisoindolo[2,1-a]quinazolines-11(13)-carboxylic acids possessing antimicrobial and antiviral activities
作者:Vladimir P. Zaytsev、Lala V. Lovtsevich、Kuzma M. Pokazeev、Elena A. Sorokina、Pavel V. Dorovatovskii、Victor N. Khrustalev、Anna A. Romanycheva、Anton A. Shetnev、Alexandrina S. Volobueva、Iana L. Esaulkova、Alexander V. Slita、Vladimir V. Zarubaev、Fedor I. Zubkov
DOI:10.1016/j.tet.2022.133205
日期:2023.1
via the tandem acylation/intramolecular Diels-Alder reaction of vinylarenes (IMDAV). The reaction sequence involves three successive steps: the initial acylation of a quinazolinone nitrogen atom, the IMDAV reaction, and the final aromatization of the resulting five-member ring. The proposed exo-cycloaddition reaction allows to construct from four to five stereogenic centers and two new rings in one synthetic
2-furylvinyl- 和 2-thienylvinyl-2,3-dihydroquinazolin-4(1 H )-ones 与马来酸酐的相互作用通过串联酰化得到 isoindolo[2,1- a ]quinazoline-11(13)-carboxylic acids /乙烯基芳烃的分子内 Diels-Alder 反应 (IMDAV)。反应顺序包括三个连续步骤:喹唑啉酮氮原子的初始酰化、IMDAV 反应以及所得五元环的最终芳构化。所提出的外环加成反应允许在一个合成步骤中构建四到五个立体异构中心和两个新环。在体外针对常见的细菌病原体菌株评估了靶标稠合的异吲哚并喹唑啉(大肠杆菌、金黄色葡萄球菌等)。已证明某些噻吩并异吲哚并喹唑啉衍生物在 16–32 μg mL -1的 MIC 值水平下表现出有效的抗菌活性。选定的 2,3-二氢喹唑啉-4(1 H )-酮和异吲哚并[2,1- a ]喹唑啉