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Short Paper | Regular issue | Vol 91, No. 6, 2015, pp.1227-1243
Published online, 23rd April, 2015
DOI: 10.3987/COM-15-13210
Synthesis and Anticancer Activities of Thiazoles, 1,3-Thiazines, and Thiazolidine Using Chitosan-Grafted-Poly(vinylpyridine) as Basic Catalyst

Sobhi M. Gomha, Sayed M. Riyadh,* Elmahdi A. Mahmmoud, and Mahmoud M. Elaasser

*Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt


Three different series of ethylidenehydrazonothiazoles 5a-c, 6a-c, ethylidenehydrazono-1,3-thiazines 9a-i and ethylidenehydrazonothiazolidine 12 have been prepared via reactions of ethylidenethiosemicarbazide 3a or ethylidenethiocarbohydrazide 3b with α-halocarbonyl compounds 4a-c, acrylonitrile derivatives 7a-i, and dimethyl acetylenedicarboxylate 10, respectively. Different basic catalysts were used in these reactions such as, triethylamine, chitosan, and chitosan-grafted-poly(vinylpyridine) and the latter catalyst has precedence as environmentally friendly basic catalyst. Moreover, the selected newly synthesized products were evaluated for their anti-cancer activity against a colon carcinoma cell line (HCT-116) and liver carcinoma cell line HEPG2 and revealed promising activity especially 1,3-thiazines 9c-i.