Specific Inhibitors of Puromycin-Sensitive Aminopeptidase with a 3-(Halogenated Phenyl)-2,4(1H,3H)-quinazolinedione Skeleton
摘要:
Specific puromycin-sensitive aminopeptidase (PSA) inhibitors with a 3-(halogenated phenyl)-2,4(1H,3H)-quinazolinedione skeleton were prepared and their structure-activity relationships were investigated. The nature (F, Cl or Br), number and position(s) of the halogen atom(s) introduced into the 3-phenyl group were concluded to be critical determinants of the inhibitory activity.
Remarkable Conversion of 2-Thioxo-2,3-dihydroquinazolin-4(1H)-ones into the Corresponding Quinazoline-2,4(1H,3H)-diones: Spectroscopic Analysis and X-Ray Crystallography
作者:Adel S. El-Azab、Nasr Y. Khalil、Alaa A.-M. Abdel-Aziz
DOI:10.1155/2021/6612177
日期:2021.4.2
analysis. The crystal structure of 6-methyl-3-phenylquinazoline-2,4(1H,3H)-dione (11) [C15H12N2O2: MF = 252.27, triclinic, P-1, a = 7.8495 (13) Å, b = 12.456 (2) Å, c = 13.350 (2) Å, α = 103.322 (3)°, β = 90.002 (3)°, γ = 102.671 (4)°, V = 1237.5 (3) Å3, Z = 4, R = 0.0592, wR = 0.1699, S = 1.039] was determined. In the crystal cell, two identical conformers of compound 11 were found connected by intramolecular
Metal and phosgene-free synthesis of 1H-quinazoline-2,4-diones by selenium-catalyzed carbonylation of o-nitrobenzamides
作者:Xiaowei Wu、Zhengkun Yu
DOI:10.1016/j.tetlet.2010.01.040
日期:2010.3
were efficiently synthesized by selenium-catalyzed carbonylation of o-nitrobenzamides under relatively mild conditions. In situ-generated carbonyl selenide (SeCO) is proposed to initiate the catalytic carbonylation. Thus, a concise transition metal and phosgene-free synthetic route to potentially bioactive-substituted 1H-quinazoline-2,4-dione derivatives has been developed.
Metal-Free N–H/C–H Carbonylation by Phenyl Isocyanate: Divergent Synthesis of Six-Membered <i>N</i>-Heterocycles
作者:Karthick Govindan、Alageswaran Jayaram、Tamilselvan Duraisamy、Nian-Qi Chen、Wei-Yu Lin
DOI:10.1021/acs.joc.2c01026
日期:2022.7.1
We disclose a method using phenyl isocyanate to synthesize carbonyl-containing N-heterocycles. The metal-free novel approach for both N–H and C–H carbonylation processes was successfully refined, delivering a range of synthetically valuable derivatives of quinazoline-2,4(1H,3H)-dione, 2H-benzo[e] [1,2,4] thiadiazin-3(4H)-one 1,1-dioxide, and pyrrolo[1,2-a] quinoxalin-4(5H)-one. The protocol features
我们公开了一种使用异氰酸苯酯合成含羰基的N-杂环化合物的方法。N-H 和 C-H 羰基化过程的无金属新方法已成功精炼,提供了一系列具有合成价值的喹唑啉-2,4(1 H ,3 H )-二酮、2 H-苯并[ e ] [1,2,4] thiadiazin-3(4 H )-one 1,1-dioxide 和 pyrrolo[1,2 - a ] quinoxalin-4(5 H)-一。该协议具有广泛的底物,具有多种反应,适用于优异的产量、温和的条件和良好的官能团兼容性。此外,该反应的适用性以克级合成和药物分子的合成转化为特征。
Palladium-Catalyzed Oxidative Cycloaddition of Quinazoline-2,4(1H,3H)-diones and Diarylalkynes via C–H/N–H Activation
作者:Alexander V. Stepakov、Darya D. Komolova、Yulia A. Pronina、Stanislav V. Lozovskiy、Stanislav I. Selivanov、Alexander I. Ponyaev、Alexander S. Filatov、Vitali M. Boitsov
DOI:10.1055/a-2105-2850
日期:2023.12
3-subsituted quinazoline-2,4(1H,3H)-diones and alkynes has been developed. The reaction is Pd(II)-catalyzed and successfully occurs in the presence of Ag(I) oxidants. This transformation is assumed to proceed by N–H palladation of the quinazoline-2,4(1H,3H)-dione followed by ortho-C–H activation. Using this methodology, a series of 5,6,7,8-tetraaryl-1H-azepino[3,2,1-ij]quinazoline-1,3(2H)-diones were obtained
已开发出3-取代喹唑啉-2,4(1 H ,3 H )-二酮和炔烃的氧化环加成反应。该反应由 Pd(II) 催化,并在 Ag(I) 氧化剂存在下成功发生。假设这种转化是通过喹唑啉-2,4(1 H ,3 H )-二酮的 N-H 钯化进行的,然后是邻位-C-H 活化。使用该方法,以中等至良好的收率获得了一系列5,6,7,8-四芳基-1H-氮杂[3,2,1- ij ]喹唑啉-1,3(2H ) -二酮。所得三环杂环可通过碱性水解转化为1 H-苯并[ b]azepine-9-甲酰胺衍生物。进行了 DFT 计算以阐明反应机理。
Synthesis of 3-Aryl-2,4-dioxo-1,2,3,4-tetrahydroquinazolines and 2-Arylamino-4-oxo-4<i>H</i>-3,1-benzoxazines from Methyl<i>N</i>-Aryldithiocarbamates
作者:J. Garin、E. Melendez、F. L. Merchán、T. Tejero、E. Villarroya