Synthesis, biological evaluation and molecular docking of 3-substituted quinazoline-2,4(1H, 3H)-diones
作者:Lumadhar Santos-Ballardo、Fernando García-Páez、Lorenzo A Picos-Corrales、Adrián Ochoa-Terán、Pedro Bastidas、Loranda Calderón-Zamora、Guadalupe Rendón-Maldonado、Ulises Osuna-Martínez、Juan I Sarmiento-Sánchez
DOI:10.1007/s12039-020-01813-1
日期:2020.12
AbstractThe quinazoline-2,4-diones scaffold is found in bioactive compounds, commercial drugs and exhibit important biological activities. However, their antidiabetic activity is rarely explored. For this purpose, an easy one-pot three-components and straightforward synthesis of 3-substituted quinazoline-2,4-diones was designed, in both, the catalyst- and solvent-free conditions under microwave irradiation
Oxidative Rearrangement of Isatins with Arylamines Using H<sub>2</sub>
O<sub>2</sub>
as Oxidant: A Facile Synthesis of Quinazoline-2,4-diones and Evaluation of Their Antibacterial Activity
A green and highly efficient synthetic method for the synthesis of quinazoline‐2,4‐diones with hydrogen peroxide as the terminal oxidant has been developed. The reaction features the mild reaction conditions, broad substrate scope, metal‐free catalysts, and sole byproduct water. A plausible mechanism for this process was proposed. Moreover, an antibacterial activity study was performed to evaluate
There are provided a fused pyrimidine compound having antagonistic activity against luteinizing hormone releasing hormone, and a medicine containing the compound. A luteinizing hormone releasing hormone antagonist containing a compound represented by the formula:
wherein R
1a
is a hydrocarbon group which may be substituted or a hydrogen atom,
ring A
a
is a 6-membered aromatic ring which may be further substituted,
ring B
a
is a homocyclic or heterocyclic ring which may be further substituted,
W
a
is an oxygen atom or a sulfur atom,
X
a1
and X
a2
, which may be identical or different, are each a hydrogen atom, a hydrocarbon group which may be substituted, or a heterocyclic group which may be substituted, or X
a1
and X
a2
together may form an oxygen atom, a sulfur atom or NR
3a
(wherein R
3a
is a hydrocarbon group which may be substituted or a hydrogen atom), and
Y
a
is C
1-6
alkylene which may be substituted or a bond, or a salt or prodrug thereof.
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