A one-pot, three-component reaction of an isatin and kojic acid with an active methylene compound such as
ethyl cyanoacetate, methyl cyanoacetate and malononitrile in methanol using catalytic amount of DABCO to give 2'-
amino-6'-(hydroxymethyl)-8'H-spiro[indoline-3,4'-pyrano[3,2-b]pyran]-2,8'-diones in good to excellent yields under
reflux conditions, is described.
Cu(OTf)2 catalyzed three component reaction: Efficient synthesis of spiro[indoline-3,4′-pyrano[3,2-b]pyran derivatives and their anticancer potency towards A549 human lung cancer cell lines
Cu(OTf)(2) catalyzed efficient synthesis of spiropyrano[3,2-b]pyran-4(8H)-ones is accomplished via one-pot three component reaction between isatin, kojic acid and active methylenes. This synthetic protocol is operationally simple and affords product with good to excellent yields at a short reaction time. The synthesized compounds were evaluated for their tumor cell growth inhibitory activity against the human lung cancer cell line (A549) and found that 13 compounds exhibited moderate to good anticancer potency. Molecular docking studies were performed for all the synthesized compounds and the results showed that compound 4e showed greater affinity for anaplastic lymphoma kinase (ALK) receptor. (C) 2013 Elsevier Ltd. All rights reserved.
N-doped graphene quantum dots modified with CuO (0D)/ZnO (1D) heterojunctions as a new nanocatalyst for the environmentally friendly one-pot synthesis of monospiro derivatives
作者:Javad Safaei-Ghomi、Zahra Elyasi、Pouria Babaei
DOI:10.1039/d0nj04447d
日期:——
N-doped graphene quantum dots modified with CuO/ZnO nanoarrays were synthesized via a green hydrothermal process. The catalytic activities of the CuO/ZnO heterojunctions, pure N-GQDs, and CuO/ZnO@N-GQDs nanocomposite were compared and, based on the empirical results, it can be concluded that the activities are in the order: CuO/ZnO@N-GQDs > N-GQDs > CuO/ZnO. Therefore, the proposed nanocomposite was