Enantioselective Organocatalytic Domino Michael/Aldol Reactions: An Efficient Procedure for the Stereocontrolled Construction of 2<i>H</i>-Thiopyrano[2,3-b]quinoline Scaffolds
An efficientprocedure for the stereocontrolledconstruction of 2H‐thiopyrano[2,3‐b]quinolinescaffolds has been developed, starting from simple compounds. The dominoMichael/aldolreactions between 2‐mercaptobenzaldehydes and enals, promoted by chiral diphenylprolinol TMS ether, proceed with excellent chemo‐ and enantioselectivity to give the corresponding synthetically useful and pharmaceutically
从简单的化合物开始,已经开发出了一种有效的立体控制2 H -thiopyrano [2,3-b]喹啉骨架的方法。手性二苯基脯氨醇TMS醚促进的2-巯基苯甲醛与烯醛之间的多米诺米歇尔/羟醛反应,具有出色的化学和对映选择性,可提供相应的合成上有用的和药学上有价值的2 H-硫代吡喃并[2,3-b]喹啉ee的产率为90–99%。
Organocatalyzed Highly Diastereo- and Enantioselective Tandem Sulfa-Michael-Mannich Reaction of 2-Mercaptoquinoline-3-carbaldimines with Maleimides
A highly diastereo‐ and enantioselectiveorganocatalyzed domino sulfa‐Michael–Mannich reaction of 2‐mercaptoquinoline‐3‐carbaldimines with maleimides has been developed. This approach provides a convenient and efficient access to multifuntionalized tetracyclic quinoline derivatives with three contiguous stereocenters in high yield with excellent stereoselectivity (up to >99:1 dr and >99 % ee).
Facile construction of densely functionalized thiopyrano[2,3-b]quinolines via three-component reactions catalyzed by l-proline
作者:Mehul B. Kanani、Manish P. Patel
DOI:10.1039/c4ra05042h
日期:——
catalyzed, three-component reactions of 2-mercaptoquinoline-3-carbaldehyde, malononitrile and thiol-based nucleophiles were developed for the first time, for the synthesis of various 4H-substituted thiopyrano[2,3-b]quinolines derivatives via a Knoevenagel condensation followed by inter-intramolecular double Michael addition reaction. This transformation leads to the generation of a 4-substituted thiopyran
首次开发了L-脯氨酸催化的2-巯基喹啉-3-甲醛,丙二腈和硫醇基亲核试剂的三组分反应,用于合成各种4 H-取代的硫代吡喃并[2,3- b ]喹啉衍生物通过Knoevenagel缩合反应,然后进行分子间双迈克尔加成反应。这种转化导致在一次操作中生成一个4-取代的噻喃环,以及一个CC和两个CS键。
Discovery of novel thienoquinoline-2-carboxamide chalcone derivatives as antiproliferative EGFR tyrosine kinase inhibitors
作者:Mahmoud S. Abdelbaset、Mohamed Abdel-Aziz、Mohamed Ramadan、Mostafa H. Abdelrahman、Syed Nasir Abbas Bukhari、Taha F.S. Ali、Gamal El-Din A. Abuo-Rahma
DOI:10.1016/j.bmc.2019.02.012
日期:2019.3
Novel thienoquinoline carboxamide-chalcone derivatives were prepared via the cyclization of acylated chalcones and 2-mercaptoquinoline-3-carbaldehyde in DMF with K2CO3. Thienoquinolines 9a-f, h exhibited promising antiproliferative effect against all the tested cell lines and gave a significant activity as EGFRinhibitors, with IC50 values ranging from 0.5 and 3.2 µM, and compounds 9e and 9f being
The synthesis of iminothiophenone-fused quinolines and evaluation of their serendipitous reactions
作者:Morteza Shiri、Zeinab Faghihi、Hossein A. Oskouei、Majid M. Heravi、Shima Fazelzadeh、Behrouz Notash
DOI:10.1039/c6ra11469e
日期:——
The novel synthesis of tricyclic 2-(cyclohexylimino)thieno[2,3-b]quinolin-3(2H)-ones from the reaction of 2-mercaptoquinoline-3-carbaldehydes and isocyanides in methanol without the use of any additive is described. This protocol proceeds with high atom economy through the formation of C–S and C–C bonds and then oxidation via tandem reaction. Moreover, some other remarkable aspects of this reaction
描述了在不使用任何添加剂的情况下,由2-巯基喹啉-3-甲醛与异氰酸酯在甲醇中反应合成三环2-(环己基氨基)噻吩并[2,3 - b ]喹啉-3(2H)-的新方法。 。该协议通过形成C–S和C–C键,然后通过串联反应进行氧化来实现高原子经济性。此外,还研究了该反应的其他显着方面,例如水解和与芳族胺的三组分反应以产生高度共轭的席夫碱。