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Synthesis of (Z)-5-[(5-(2-(Phenylsulfonyl-ethyl)-1H-indol-3-yl)methelene]thiozolidine-2,4-dione of Potential Pharmacological Interest
Corresponding Author(s) : Keetha Laxminarayana
Asian Journal of Chemistry,
Vol. 25 No. 3 (2013): Vol 25 Issue 3
Abstract
Formylation of 5-bromoindole (1) under Vilsmeier-Hack formylation conditions using POCl3 and DMF as a reagents under cooling conditions (0-5 ºC) followed by simple processing gave a 5-bromoindole-3-carboxyaldehyde (2) and condensation of (2) with thiazolidine-2,4-dione (3) in toluene as a solvent in the presence of PTSA and TBAB as a phase transfer catalyst under stirring at room temperature for 10-30 min, then slowly raise the temperature to 105 ºC and maintained for 12-15 h, obtained a product(Z)-5-((5-bromo-1-alkyl-1H-indol-3-yl)methylene)thiazolidine-2,4-dione (4) later on condensation of (4) with phenylvinylsulfone (5) in the presence of palladium acetate as a catalyst in DMF as a solvent heating at 100-105 ºC for 16 h gave (5Z)-5-((1-alkyl-5-((E)-2(-(phenylsulfonyl)vinyl)-1H-indol-3-yl)methelene)thiozolidine-2,4-dione (8) and on reduction of (8) in the presence of hydrogen gas, palladium-carbon by using catalytic amount acetic acid medium in methanol as a solvent heating at 45-50 ºC for 8 h gave (Z)-5-((1-alkyl-5-(2-(-(phenylsulfonyl)ethyl)-1H-indol-3yl)methelene)thiozolidine-2,4-dione (11) and 11 could also be prepared by alternate methods structure of 11 has been established on the basis of its spectral and analytical data.
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References
M.C.A. DeLima, D.L.B. Costa, A.J.S. Goes, S.L. Galdino, I.R. Pitta and C. Luu-Due, Pharmazie, 47, 182 (1992).
H. Chen, L. Jiao, L. Guo, X.L. Li, C.L. Ba and J.C. Zhang, Carbohyd. Res., 343, 3015 (2008).
N. Sunduru, K. Srivasta, S. Rajakumar, S.K. Puri and J.K. Saxena, Bioorg. Med. Chem. Lett., 19, 2570 (2009).
A. Jarrahpour, D. Khalili, E.D. Clercq, C. Salmi and J.M. Brunel, Molecules, 12, 1720 (2007).
T. Yoshlka, T. Fujita, T. Kanai, Y. Alzwa, T. Kurumda, K. Hasegawa and H. Horikoshi, J. Med. Chem., 32, 421 (1989).
T. Fufiwara, S. Yoshioka, T. Yoshioka, I. Ushiyama and H. Horikoshi, Diabetes, 37, 1549 (1988).
D. A. Clark, S.W. Goldsteln, R.A. Volkman, J.F. Eggler, G.F. Holland, B. Hulin, R.W. Stevenson, D.K. Kreutter, E.M. Gibbs, M.N. Krupp and P. Merrigan, J. Med. Chem., 34, 319 (1991).
B.C.C. Cantello, M.A. Cawthorne, D. Haigh, R.M. Hindley, S.A. Smith and P.L. Thurlby, Biomed. Chem. Lett., 4, 1181 (1994).
Y. Momose, K. Meguso, H. Ikeda, C. Hatanka, S. Oi and T. Sodha, Chem. Pharm. Bull., 39, 1440 (1991).
L.A. Serbera, J. Castaner, M.D. Fresno and J. Silvestre, Drugs of Future, 27, 132 (2002)