141306-02-7Relevant academic research and scientific papers
Mukaiyama's reagent promoted C-N bond formation: a new method to synthesize 3-alkylquinazolin-4-ones
Punthasee, Puminun,Vanitcha, Avassaya,Wacharasindhu, Sumrit
, p. 1713 - 1716 (2010)
A new approach to synthesize 3-alkylquinazolin-4-ones is developed. Treatment of quinazolin-4-ones with Mukaiyama's reagent, a base and a primary amine nucleophile results in the formation of 3-alkylquinazolin-4-ones in moderate to good yields under mild conditions. Using this methodology, a one-step synthesis of the natural alkaloid, echinozolinone, is accomplished.
N,N-Dimethylformamide as Carbon Synthons for the Synthesis ofN-Heterocycles: Pyrrolo/Indolo[1,2-a]quinoxalines and Quinazolin-4-ones
Ding, Chengcheng,Li, Shichen,Ma, Chen,Ren, Jianing,Wang, Yishou
, p. 16848 - 16857 (2021/12/06)
N,N-dimethylformamide (DMF) as synthetic precursors contributing especially the methyl, acyl, and amino groups has played a significant role in heterocycle syntheses and functionalization. In this protocol, a wide range of pyrrolo/indolo[1,2-a]quinoxalines and quinazolin-4-ones were obtained in moderate to good yields by using elemental iodine without any metal or peroxides. We considered thatN-methyl andN-acyl of DMF participate and complete the reaction separately through different mechanisms, which displayed potential still to be explored of DMF.
Copper-Catalyzed Oxidative Multicomponent Annulation Reaction for Direct Synthesis of Quinazolinones via an Imine-Protection Strategy
Liang, Yantang,Tan, Zhenda,Jiang, Huanfeng,Zhu, Zhibo,Zhang, Min
supporting information, p. 4725 - 4728 (2019/06/17)
Via an imine-protection strategy, we herein present an unprecedented copper-catalyzed oxidative multicomponent annulation reaction for direct synthesis of quinazolinones. The construction of various products is achieved via formation of three C-N and one
Radical reactions with 3H-quinazolin-4-ones: Synthesis of deoxyvasicinone, mackinazolinone, luotonin A, rutaecarpine and tryptanthrin
Bowman, W. Russell,Elsegood, Mark R. J.,Stein, Tobias,Weaver, George W.
, p. 103 - 113 (2008/03/14)
Alkyl, aryl, heteroaryl and acyl radicals have been cyclised onto the 2-position of 3H-quinazolin-4-one. The side chains containing the radical precursors were attached to the nitrogen atom in the 3-position. The cyclisations take place by aromatic homolytic substitution hence retain the aromaticity of the 3H-quinazolin-4-one ring. The highest yields were obtained using hexamethylditin to facilitate cyclisation rather than reduction without cyclisation. The alkaloids deoxyvasicinone 2, mackinazolinone 3, tryptanthrin 4, luotonin A 5 and rutaecarpine 8 were synthesised by radical cyclisation onto 3H-quinazolin-4-one. This journal is The Royal Society of Chemistry.
Lanthanum(III) nitrate hexahydrate or p-toluenesulfonic acid catalyzed one-pot synthesis of 4(3H)-quinazolinones under solvent-free conditions
Narasimhulu, Manchala,Mahesh, Kondempudi Chinni,Reddy, Thummalapally Srikanth,Rajesh, Karuturi,Venkateswarlu, Yenamandra
, p. 4381 - 4383 (2007/10/03)
The one-pot synthesis of quinazolinone derivatives from the reaction of anthranilic acid, trialkyl orthoformate and amines in the presence of lanthanum(III) nitrate hexahydrate or p-toluenesulfonic acid has been carried out. The reaction occurred in a few
QUINAZOLINONE COMPOUNDS AS CALCILYTICS
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Page 50, (2010/02/07)
Various calcilytic compounds and pharmaceutical compositions containing these compounds are disclosed. Calcilytic compounds are compounds capable of inhibiting calcium receptor activity. Techniques which can be used to obtain calcilytic compounds and uses of calcilyitc compounds as calcium receptor antagonists are also disclosed.
Synthesis and in vitro study of platelet antiaggregant activity of some 4-quinazolinone derivatives
Gravier,Dupin,Casadebaig,Hou,Boisseau,Bernard
, p. 91 - 94 (2007/10/02)
Some new 4-quinazolinones were prepared. Their antiplatelet activity was evaluated in vitro with respect to aggregation induced by ADP, collagen, arachidonic acid and the platelet serotonin release reaction. Most molecules showed an inhibiting power similar to that of acetylsalicylic acid under the same conditions, and even greater when aggregation was induced by ADP. Reduction of the 4-quinazolinone derivatives to their 1,2,3,4-tetrahydroquinazoline homologues produced an increase in platelet inhibitory action except when ADP is the inductor.
Synthesis and in vitro study of platelet antiaggregant activity of 1,2,3,4-tetrahydroquinazoline derivatives
Gravier,Dupin,Casadebaig,Hou,Boisseau,Bernard
, p. 531 - 535 (2007/10/02)
Some original 3-substituted 1,2,3,4-tetrahydroquinazolines were synthesized. Their antiplatelet activity was evaluated in vitro with respect to aggregation induced by the main inducers (ADP, collagen, arachidonic acid), platelet serotonin release reaction and thromboxane A2 synthesis. All these molecules possess an inhibiting power which, compared to that of aspirin in the same conditions, is the same or greater when aggregation is induced by ADP.
