478248-83-8Relevant academic research and scientific papers
Synthesis of Heterocycle-fused Pyridine N-Oxides from Oximes and Diazo Compounds via RhIII-Catalyzed C-H Activation and Annulation
Sun, Peng,Wu, Youzhi,Yang, Tie,Wu, Xiaoming,Xu, Jinyi,Lin, Aijun,Yao, Hequan
supporting information, p. 2469 - 2473 (2015/08/18)
A RhIII-catalyzed tandem C-H activation and C-N bond formation reaction between oximes and diazo compounds for the synthesis of heterocycle-fused pyridine N-oxides has been developed. The reaction exhibits good functional group tolerance and regioselectivity. After simple transformation, the 1-substituted, 1,3-disubstituted, 1,4-disubstituted and 1,3,4-trisubstituted heterocycle-fused pyridines were all obtained in high efficiency. Moreover, this strategy has also been expanded to the synthesis of a key intermediate for the construction of one potential anti-HIV agent.
Syntheses of 3-acetoacetylaminobenzo[b]furan derivatives having cysteinyl leukotriene 2 receptor antagonistic activity
Ando, Kumiko,Tsuji, Eriko,Ando, Yuko,Kuwata, Noriko,Kunitomo, Jun-Ichi,Yamashita, Masayuki,Ohta, Shunsaku,Kohno, Shigekatsu,Ohishi, Yoshitaka
, p. 625 - 635 (2007/10/03)
Novel 3-acetoacetylaminobenzo[b]furan derivatives having a modified triene system at the 3-position were synthesized starting with 3-aminobenzo[b]furans. The enol isomers, 3-[(3-hydroxybul-2-enonyl)amino]benzo[b]furans (1), of the 3-acetoacetylaminobenzo[b]furans were obtained as stable isomers owing to formation of a hydrogen bonding between the enol hydroxyl group and the amidocarbonyl group. The planarity of the C-2 substituent through the C-3 side chain suggested the existence of a modified conjugational triene system in the enol compound. Cysteinyl leukotriene 1 and 2 receptor antagonistic activities for these compounds were evaluated. 2-(4-Cyanobenzoyl or ethoxycarbonyl)-3-[(2-cyano-3-hydroxybut-2-enonyl)amino]benzo[e]furans (15g, 15o, 15u) were moderately active.
