16347-56-1Relevant articles and documents
Microwave-assisted [3+2] cycloaddition and suzuki-miyaura cross-coupling for a concise access to polyaromatic scaffolds
Hedou, Damien,Deau, Emmanuel,Dubouilh-Benard, Carole,Sanselme, Morgane,Martinet, Anthony,Chosson, Elizabeth,Levacher, Vincent,Besson, Thierry
, p. 7533 - 7545 (2013)
Novel 3-(prop-2-ynyl)pyrido[2,3-d]pyrimidin-4(3H)-ones and 3-(prop-2-ynyl)quinazolin-4(3H)-ones have been synthesized in a high-yielding microwave-assisted one-pot procedure. The one-pot sequence was conveniently extended to the synthesis of commercially unavailable 6-bromo-N 3-propargylpyrido[2,3-d]pyrimidinone by a regiocontrolled bromination with NBS. The synthetic scaffolds were successfully converted into triazoles by copper(I)-catalyzed [3+2] cycloaddition and substituted at the 6-position by Suzuki-Miyaura cross-coupling in high overall yields. A microwave-assisted one-pot sequential synthesis involving esterification, formylation, bromination, and cyclization of anthranilic and 2-aminonicotinic acid derivatives provides access to N3-propargylquinazolinones or -pyridopyrimidinones in high overall yields. Functionalization by [3+2] cycloaddition and Suzuki-Miyaura cross-coupling rapidly led to 48 novel polyaromatic heterocycles.
Transition-metal and oxidant-free approach for the synthesis of diverse N-heterocycles by TMSCl activation of isocyanides
Chen, Fen-Er,Dong, Lin,Li, Hongyan,Liu, Jinxin,Luo, Liangliang,Xiao, You-Cai,Zhou, Yuan
, p. 29257 - 29262 (2020/10/02)
A highly efficient TMSCl-mediated addition of N-nucleophiles to isocyanides has been achieved. This transition-metal and oxidant-free strategy has been applied to the construction of various N-heterocyles such as quinazolinone, benzimidazole and benzothiazole derivatives by the use of distinct amino-based binucleophiles. The notable feature of this protocol includes its mild reaction condition, broad functional group tolerance and excellent yield. This journal is
Design, Synthesis and Bioevaluation of Two Series of 3-[(1-Benzyl-1H-1,2,3-triazol-4-yl)methyl]quinazolin-4(3H)-ones and N-(1-Benzylpiperidin-4-yl)quinazolin-4-amines
Lan, Ta Thu,Anh, Duong Tien,Pham-The, Hai,Dung, Do Thi Mai,Park, Eun Jae,Jang, Sun Dong,Kwon, Joo Hee,Kang, Jong Soon,Thuan, Nguyen Thi,Han, Sang-Bae,Nam, Nguyen-Hai
, (2020/07/06)
Two series of 3-[(1-benzyl-1H-1,2,3-triazol-4-yl)methyl]quinazolin-4(3H)-ones and N-(1-benzylpiperidin-4-yl)quinazolin-4-amines were designed initially as potential acetylcholine esterase inhibitors. Biological evaluation demonstrated that N-(1-benzylpiperidin-4-yl)quinazolin-4-amines significantly inhibited AChE activity. Especially, two compounds of them were found to be the most potent with relative AChE inhibition percentages of 87 percent in comparison to donepezil. The docking studies with AChE showed similar interactions between donepezil and four derivatives. N-(1-Benzylpiperidin-4-yl)quinazolin-4-amines also exhibited significant DPPH scavenging effects. The two series of compound also exerted moderate to good cytotoxicity against three human cancer cell lines, including SW620 (human colon cancer), PC-3 (prostate cancer), and NCI?H23 (lung cancer), with 3-[(1-benzyl-1H-1,2,3-triazol-4-yl)methyl]quinazolin-4(3H)-one being the most cytotoxic agent. 3-[(1-Benzyl-1H-1,2,3-triazol-4-yl)methyl]quinazolin-4(3H)-one significantly induced early apoptosis and arrested the SW620 cells at G2/M phase. From this study, two compounds of N-(1-benzylpiperidin-4-yl)quinazolin-4-amines could serve as new leads for further design and AChE inhibitors, while 3-[(1-benzyl-1H-1,2,3-triazol-4-yl)methyl]quinazolin-4(3H)-one could serve as a new lead for the design and development of more potent anticancer agents.