49854-16-2Relevant academic research and scientific papers
Quinazolinone derivatives and production method and application thereof
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Paragraph 0064-0065, (2020/02/14)
The invention discloses quinazolinone derivatives and a production method and application thereof. The quinazolinone derivatives are synthesized by means of the simple and convenient method, the yields are high, the production cost is low, with a concentr
Deep eutectic solvent mediated synthesis of quinazolinones and dihydroquinazolinones: Synthesis of natural products and drugs
Ghosh, Suman Kr,Nagarajan, Rajagopal
, p. 27378 - 27387 (2016/04/04)
A mild and greener protocol was developed to synthesize substituted quinazolinones and dihydroquinazolinones via deep eutectic solvent (DES) mediated cyclization with a series of aliphatic, aromatic, and heteroaromatic aldehydes in good to excellent yields. This greener strategy was further utilised to synthesize various quinazolinone natural products and drugs.
A synthetic zipper peptide motif orchestrated via co-operative interplay of hydrogen bonding, aromatic stacking, and backbone chirality
Nair, Roshna V.,Kheria, Sanjeev,Rayavarapu, Suresh,Kotmale, Amol S.,Jagadeesh, Bharatam,Gonnade, Rajesh G.,Puranik, Vedavati G.,Rajamohanan, Pattuparambil R.,Sanjayan, Gangadhar J.
, p. 11477 - 11480 (2013/09/02)
Here, we report on a new class of synthetic zipper peptide which assumes its three-dimensional zipper-like structure via a co-operative interplay of hydrogen bonding, aromatic stacking, and backbone chirality. Structural studies carried out in both solid- and solution-state confirmed the zipper-like structural architecture assumed by the synthetic peptide which makes use of unusually remote inter-residual hydrogen-bonding and aromatic stacking interactions to attain its shape. The effect of chirality modulation and the extent of noncovalent forces in the structure stabilization have also been comprehensively explored via single-crystal X-ray diffraction and solution-state NMR studies. The results highlight the utility of noncovalent forces in engineering complex synthetic molecules with intriguing structural architectures.
Efficient syntheses of 2,3-disubstituted natural quinazolinones via iridium catalysis
Fang, Jie,Zhou, Jianguang
, p. 2389 - 2391 (2012/04/11)
Natural products sclerotigenin, pegamine, deoxyvasicinone, mackinazolinone, and rutaecarpine were synthesized. Core quinazolinone structures were constructed via Ir catalysis. The Royal Society of Chemistry 2012.
First total synthesis of (-)-Circumdatin H, a novel mitochondrial NADH Oxidase inhibitor
Bose, D. Subhas,Chary, M. Venu
experimental part, p. 643 - 650 (2010/04/30)
An efficient and highly convergent synthesis of the mitochondrial NADH oxidase inhibitor (-)-circumdatin H is described. The strategy employs the intramolecular Eguchi aza-Wittig protocol as a key step to install the crucial central core BC ring system, leading to the first total synthesis of the target molecule. Georg Thieme Verlag Stuttgart · New York.
Total synthesis of asperlicin C, circumdatin F, demethylbenzomalvin A, demethoxycircumdatin H, sclerotigenin, and other fused quinazolinones
Tseng, Ming-Chung,Yang, Huei-Yun,Chu, Yen-Ho
experimental part, p. 419 - 427 (2010/02/16)
Using scandium triflate and microwaves, the direct double dehydrocyclization of anthranilate-containing tripeptides was achieved, affording the total syntheses of (i) quinazolino[3,2-a]benzodiazepinediones (1a-f), (ii) diazepino[2,1-b]quinazolinediones (2a-e), and (iii) pyrazino[2,1-b]quinazolinediones (3a-e) with good overall isolated yields (23-43%, 37-47% and 31-56%, respectively). Among the quinazolino[3,2-a] benzodiazepinediones synthesized, 1a (sclerotigenin), 1b (circumdatin F), and 1f (asperlicin C) are natural products.
Tin triflate-mediated total synthesis of circumdatin F, sclerotigenin, asperlicin C, and other quinazolino[3,2-a][1,4]benzodiazepines
Tseng, Ming-Chung,Lai, Chi-Yu,Chu, Yu-Wan,Chu, Yen-Ho
supporting information; experimental part, p. 445 - 447 (2009/05/06)
Using tin triflate, as an effective Lewis acid, and microwaves, direct double cyclizations of bis(anthranilate)-containing tripeptide precursors to afford the total syntheses of 7-substituted quinazolino[3,2-a][1,4] benzodiazepinediones (1a-f), including natural products circumdatin F (1a), sclerotigenin (1b), and asperlicin C (1c), were achieved with good overall isolated yields (23-62%). The Royal Society of Chemistry.
One dimensional unichemo protection (UCP) in organic synthesis
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, (2015/04/15)
A protected template molecule and a new one-dimensional UniChemo Protection (UCP) organic synthetic method for preparing polyfunctional organic molecules is described. The synthetic method can be used with many kinds of chemical reactions and provides selective access to many functional groups in a template molecule. The method utilizes protection groups that are each composed of building block units that can be removed one by one affording a new protection group one unit shorter or exposing a functional group on the template molecule. The exposed functional group on the template molecule can react with a target group. Different target groups can be introduced into the template molecule by using protection groups containing different numbers of building block units.
Total syntheses of the benzodiazepine alkaloids circumdatin F and circumdatin C
Witt,Bergman
, p. 2784 - 2788 (2007/10/03)
Total syntheses of circumdatin F and circumdatin C, which both possess a 3H-quinazolin-4-one as well as a 1,4-benzodiazepin-5-one moiety, are described. A tripeptide derivative was synthesized as a key intermediate and dehydrated to a benzoxazine by react
