我们首次开发了一种新颖的一步法合成具有异麦芽酚部分的取代3,4-二氢喹啉酮。建议的方法包括酸催化螺吲哚并吡喃并[3,2- b ]吡喃的再循环,其可以通过3-羟基-4-吡喃酮、靛红和丙二腈的多组分反应获得。所述转化是 3-羟基-4-吡喃酮衍生物的显着特征,对于其他杂环烯醇而言并不典型。所考虑方法的优点是使用易于获得的起始原料和简单的后处理程序,可以避免色谱纯化。通过X射线衍射确定了其中一种合成产物的结构。
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.
Sonochemistry in an organocatalytic domino reaction: an expedient multicomponent access to structurally functionalized dihydropyrano[3,2-<i>b</i>]pyrans, spiro-pyrano[3,2-<i>b</i>]pyrans, and spiro-indenoquinoxaline-pyranopyrans under ambient conditions
irradiation in aqueous ethanolic solution at ambient temperature has been developed. This methodology can involve the assembly of C-C, C[double bond, length as m-dash]C, C-O, C-N bonds via a one-pot operation, and following this protocol, a series of novel amino-substituted spiro[indeno[1,2-b]quinoxaline-11,4-pyrano[3,2-b]pyran]-3-carbonitrile/carboxylates have been synthesized. The practical utility of
Electrochemically induced assembling of isatins, kojic acid, and malonic acid derivatives into substituted spiro[indole‐3,4′‐pyran]‐2(
<scp>1</scp>
<i>H</i>
)‐one scaffold and predicting potential protein targets
作者:Michail N. Elinson、Yuliya E. Ryzhkova、Anatoly N. Vereshchagin、Fedor V. Ryzhkov、Varvara M. Kalashnikova、Viktor A. Korolev、Mikhail P. Egorov
DOI:10.1002/jhet.4579
日期:2023.2
Electrochemically induced multicomponent assembling of isatins, kojic acid, and malonicacidderivatives in n-propanol in the presence of sodium iodide as an electrolyte in an undivided cell results in the formation of unsymmetrical spiro(indole-3,4′-pyrano[3,2-b]pyranes) in 86–98% yields. The optimized reaction conditions and a mechanistic rationale for this catalytic electrochemical transformation
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