Synthesis and Antinociceptive Activity of N-Substituted 4-Aryl-4-oxo-2-[(3-thiophen-2-yl)amino]but-2-enamides
作者:S. A. Shipilovskikh、V. Y. Vaganov、R. R. Makhmudov、A. E. Rubtsov
DOI:10.1134/s1070363220040040
日期:2020.4
2-[5-Aryl-2-oxofuran-3(2H)-ylidene]amino}thiophene-3-carboxylic acid derivatives reacted with substituted amines to give newN-substituted 4-aryl-4-oxo-2-[(3-thiophen-2-yl)amino]but-2-enamides. Antinociceptive activity of the synthesized compounds was studied.
Chemistry of iminofurans 3. *Synthesis and intramolecular cyclization of (Z)-4-aryl- 2-[3-(ethoxycarbonyl)-4,5,6,7-tetra- hydrobenzo[b]thiophen-2-ylamino]- 4-oxobuten-2-oic acids
作者:S. A. Shipilovskikh、A. E. Rubtsov、V. V. Zalesov
DOI:10.1007/s10593-009-0334-3
日期:2009.6
(Z)-4-Aryl-2-[3-(ethoxycarbonyl)-4,5,6,7-tetrahydrobenzo[b]thiophen-2-ylamino]-4-oxobuten-2-oic acids, which exist in the enamino keto form in solutions, were synthesized by the action of ethyl 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate on 4-aryl-2-hydroxy-4-oxobuten-2-oic acids. Under the influence of acetic anhydride the obtained acids undergo cyclization to ethyl 2-(5-aryl-2-oxofuran-3(2H)-ylideneamino)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylates.
Recyclization of 3-(Thiophen-2-yl)imino-3H-furan-2-ones under the Action of Cyanoacetic Acid
Derivatives
作者:S. A. Shipilovskikh、A. E. Rubtsov
DOI:10.1134/s1070363220050084
日期:2020.5
The recyclization of 2-[5-aryl-2-oxofuran-3(2H)-ylidene]amino}thiophene-3-carboxylic acids with cyano-acetic acid derivatives in the presence oft-BuOK afforded potassium 1-cyano-3-[5-R-1-4-R-2-3-(ethoxycarbonyl)-thiophen-2-yl]amino}-1-R-3-5-oxo-5-arylpenta-1,3-dien-2-olates.