We have developed a simple, efficient and chemoselective approach for the synthesis of m-teraryls by the reaction of 6-aryl-2-oxo-4-(sec.amino)-2H-pyran-3-carbonitriles and 2-(1-arylethylidene)malononitriles under basic conditions. We used 6-aryl-2-oxo-4-methylsulfanyl-2H-pyran-3-carbonitriles as precursors and successfully afforded 5′-methylsulfanyl-[1,1′;3′,1′′]teraryl-4′-carbonitriles. We tried
2H-Pyronederivatives were synthesized through the reaction of aryl acetyl compounds with ketene dithioacetals in the presence of sodium hydroxide, and they showed very strong fluorescence in the solid state. The light-emitting region of these 2H-pyrones is 447-630 nm in the solid states.
신규한 피라노피란디온 화합물, 또는 이의 약학적으로 허용가능한 염, 이의 제조방법 및 이를 포함하는 알레르기성 염증 반응 유래 질환 치료용 약학 조성물
申请人:University-Industry Cooperation Group of Kyung Hee University 경희대학교 산학협력단(220040073623) BRN ▼135-82-10789
公开号:KR101666247B1
公开(公告)日:2016-10-13
본 발명은 신규한 피라노피란디온 화합물, 또는 이의 약학적으로 허용가능한 염, 이의 제조방법 및 이를 포함하는 알레르기성 염증 반응 유래 질환 치료용 약학 조성물에 관한 것이다. 본 발명의 신규한 피라노피란디온 화합물은 세포에 독성을 나타내지 않으면서도, 용량에 비례해서 에오탁신 생산을 억제하고, 천식치료 효과를 나타내므로, 보다 효과적인 천식치료제의 개발에 널리 활용될 수 있을 것이다.
This is the translated text in Chinese:
本发明涉及一种新的吡라노피란디온化合物,或其药学上可接受的盐,其制备方法以及包含它的用于治疗过敏性炎症反应性疾病的药学组合物。本发明的新的吡라노피란디온化合物不仅不表现出对细胞的毒性,而且能够按剂量成比例地抑制白细胞介素生产,并显示出哮喘治疗效果,因此可以广泛应用于更有效的哮喘治疗剂的开发。
Base-mediated alternate route for multi-functionalized allylbenzenes using ring transformation strategy
作者:Samata E. Shetgaonkar、Fateh V. Singh
DOI:10.1080/00397911.2020.1782430
日期:2020.8.17
Abstract A simple yet innovative approach for the construction of multi-substituted allylbenzenes 14, 16 and 18 with ‘donor-acceptor’ functionalities has been delineated through base-mediated ring transformation of 6-aryl-2H-pyran-2-ones 13, 15 and 17 respectively with commercially available 5-hexen-2-one 11 as carbanion source. The reactions were carried out at room temperature without using any catalyst
A simple, efficient and economical synthesis of dimethyl 3-amino-5-(2-oxo-2-arylethyl)thiophene-2,4-dicarboxylates has been reported by ring opening of methyl 3-amino-6-aryl-4-oxo-4H-thieno[3,2-c]pyran-2-carboxylates by alkoxide ions.