We are grateful to the Director, SAIF, Punjab University, Chandigarh, for carrying out mass spectrometric analysis. 1H NMR Spectra .(5b); 1H NMR of methyl 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate 2191-2858-1-15-S10.JPEG (572K) GUID:?91C9C083-73EE-427A-B5AE-E59A84AC97DA Additional file 11 1H NMR Spectra .(5c); 1H NMR of methyl 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S11.JPEG (553K) GUID:?CE400F90-04FF-4EE0-BD59-45BC93BEE4DB Additional file 12 1H NMR Spectra .(5d); 1H NMR of methyl 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S12.JPEG (533K) GUID:?302E78DF-A0BF-4EDD-B0D1-7CF13ABE0A5F Additional file 13 1H NMR Spectra .(5e); 1H NMR of methyl 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S13.JPEG (555K) GUID:?AF3237F5-9898-48DE-8D26-36056DEA0DE9 Additional file 14 1H NMR Spectra .(5f); 1H NMR of methyl 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S14.JPEG (696K) GUID:?B977B1AE-E57C-4009-A64D-C22724FC1313 Additional file 15 1H NMR Spectra .(5g); 1H NMR of methyl 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S15.JPEG (631K) GUID:?6D22B321-BBAF-47EC-8960-2681ACD485AF Additional file 16 1H NMR Spectra .(5h); 1H NMR of methyl 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S16.JPEG (718K) GUID:?50DB3DE8-81F7-4C8F-A7C8-F7A0E66B0CEB Additional file 17 1H NMR Spectra .(6a); 1H NMR of 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetic acid 2191-2858-1-15-S17.JPEG (743K) GUID:?FBCF12DB-9884-444E-B4D4-976BD99C3479 Additional file 18 1H NMR Spectra .(6b); 1H NMR of 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetic acid 2191-2858-1-15-S18.JPEG (754K) GUID:?2650C322-EAAD-4CAA-8D09-C01D93530B4E Additional file 19 1H NMR Spectra .(6c); 1H NMR of 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S19.JPEG (704K) GUID:?EBA6D241-835B-4FCA-AEAB-C2116F455C0E Additional file 20 1H NMR Spectra .(6d); 1H NMR of 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S20.JPEG (769K) GUID:?262AB4A1-3D19-45A9-8046-D8297C1B9F07 Additional file 21 1H NMR Spectra .(6e); 1H NMR of 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S21.JPEG (837K) GUID:?A5E043F3-6C4E-4434-913C-DC3301E8FC0F Additional file 22 1H NMR Spectra .(6f); 1H NMR of 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S22.JPEG (763K) GUID:?1C366D6A-B133-4C08-AE26-138FB698D0EE Additional file 23 1H NMR Spectra .(6g); 1H NMR of 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S23.JPEG (669K) GUID:?1B6E8E8A-4FC0-496E-AB61-BB351DCA2916 Additional file 24 1H NMR Spectra .(6h); 1H NMR of 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S24.JPEG (629K) GUID:?B16AD7D2-AA47-4AAE-8480-318BB60D5023 Abstract Background Thiazolidine-2, 4-diones (TZDs) have become a pharmacologically important class of heterocyclic compounds since their introduction in the form of glitazones into the clinical use for the treatment of type 2 diabetes. TZDs lower the plasma glucose levels by acting as ligands for gamma peroxisome proliferators-activated receptors. In addition, this class of heterocyclic compounds possesses various other biological activities such as antihyperglycemic, antimicrobial, anti-inflammatory, anticonvulsant, insecticidal, etc. TZDs are also known for lowering the blood pressure thereby reducing the chances of heart failure and micro-albuminuria in the patients with type 2 diabetes. Results We have described herein the synthesis of three series of compounds, namely, ethyl 2-((=??(-? em d /em em t /em )?M? em d /em em c /em ??100 where em dc /em average diameter of fungal colony in negative control plates, em dt /em average diameter of fungal colony in experimental plates. Abbreviations DMSO: dimethylsulfoxide; MIC: minimum inhibitory concentration; MTCC: microbial-type culture collection; SDA: Sabouraud dextrose agar; TZDs: thiazolidine-2,4-dione. Competing interests The writers declare they have no contending interests. Supplementary Materials Additional document 1:1H NMR Spectra .(4a); 1H NMR of ethyl 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Just click here for document(733K, JPEG) Extra document 2:1H NMR Spectra .(4b); 1H NMR of ethyl 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Just click here for document(693K, JPEG) Extra document 3:1H NMR Spectra .(4c); 1H NMR of ethyl 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(539K, JPEG) Extra document 4:1H NMR Spectra .(4d); 1H NMR of ethyl 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(579K, JPEG) Extra document 5:1H NMR Spectra .(4e); 1H NMR of ethyl 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(552K, JPEG) Extra document 6:1H NMR Spectra .(4f); 1H NMR of ethyl 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(590K, JPEG) Extra document NMR Spectra 7:1H .(4g); 1H NMR of ethyl 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(636K, JPEG) Extra document 8:1H NMR Spectra .(4h); 1H NMR of ethyl 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(580K, JPEG) Extra document 9:1H NMR Spectra .(5a); 1H NMR of methyl 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Just click here for document(560K, JPEG) Extra document 10:1H NMR Spectra .(5b); 1H NMR of methyl 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Just click here for document(572K, JPEG) Extra document 11:1H NMR Spectra .(5c); 1H NMR of methyl 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(553K, JPEG) Extra document 12:1H NMR Spectra .(5d); 1H NMR of methyl 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(533K, JPEG) Extra document 13:1H NMR Spectra .(5e); 1H NMR of methyl 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(555K, JPEG) Extra document 14:1H NMR Spectra .(5f); 1H NMR of methyl 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(696K, JPEG) Extra document 15:1H NMR Spectra .(5g); 1H NMR of methyl 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(631K, JPEG) Extra document 16:1H NMR Spectra .(5h); 1H NMR of methyl 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(718K, JPEG) Extra document 17:1H NMR Spectra .(6a); 1H Cisapride NMR of 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetic acidity Just click here for document(743K, JPEG) Extra document 18:1H NMR Spectra .(6b); 1H NMR of 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetic.TZDs may also be known for reducing the blood circulation pressure thereby lowering the probability of center failing and micro-albuminuria in the sufferers with type 2 diabetes. Results We’ve described herein the formation of three group of substances, namely, ethyl 2-((=??(-? em d /em em t /em )?M? em d /em em c /em ??100 where em dc /em typical size of fungal colony in negative control plates, em dt /em typical size of fungal colony in experimental plates. Abbreviations DMSO: dimethylsulfoxide; MIC: minimal inhibitory focus; MTCC: microbial-type lifestyle collection; SDA: Sabouraud dextrose agar; TZDs: thiazolidine-2,4-dione. Competing interests The authors declare they have no competing interests. Supplementary Material Extra file 1:1H NMR Spectra .(4a); 1H NMR of ethyl 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Just click here for document(733K, JPEG) Extra file 2:1H NMR Spectra .(4b); 1H NMR of ethyl 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Just click here for document(693K, JPEG) Extra file 3:1H NMR Spectra .(4c); 1H NMR of ethyl 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(539K, JPEG) Extra file 4:1H NMR Spectra .(4d); 1H NMR of ethyl 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(579K, JPEG) Extra file 5:1H NMR Spectra .(4e); 1H NMR of ethyl 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(552K, JPEG) Extra file 6:1H NMR Spectra .(4f); 1H NMR of ethyl 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(590K, JPEG) Extra file 7:1H NMR Spectra .(4g); 1H NMR of ethyl 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(636K, JPEG) Extra file 8:1H NMR Spectra .(4h); 1H NMR of ethyl 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(580K, JPEG) Extra file 9:1H NMR Spectra .(5a); 1H NMR of methyl 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Just click here for document(560K, JPEG) Extra file 10:1H NMR Spectra .(5b); 1H NMR of methyl 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Just click here for document(572K, JPEG) Extra file 11:1H NMR Spectra .(5c); 1H NMR of methyl 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(553K, JPEG) Extra file 12:1H NMR Spectra .(5d); 1H NMR of methyl 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(533K, JPEG) Extra file 13:1H NMR Spectra .(5e); 1H NMR of Cisapride methyl 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(555K, JPEG) Extra file 14:1H NMR Spectra .(5f); 1H NMR of methyl 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(696K, JPEG) Extra file 15:1H NMR Spectra .(5g); 1H NMR of methyl 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(631K, JPEG) Extra file 16:1H NMR Spectra .(5h); 1H NMR of methyl 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Just click here for document(718K, JPEG) Extra file 17:1H NMR Spectra .(6a); 1H NMR of 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetic acid Just click here for document(743K, JPEG) Extra file 18:1H NMR Spectra .(6b); 1H NMR of 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetic acid Just click here for document(754K, JPEG) Extra file 19:1H NMR Spectra .(6c); 1H NMR of 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid Just click here for document(704K, JPEG) Extra file 20:1H NMR Spectra .(6d); 1H NMR of 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid Just click here for document(769K, JPEG) Extra file 21:1H NMR Spectra .(6e); 1H NMR of 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid Just click here for document(837K, JPEG) Extra file 22:1H NMR Spectra .(6f); 1H NMR of 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid Just click here for document(763K, JPEG) Additional file 23:1H NMR Spectra .(6g); 1H NMR of 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid Click here for file(669K, JPEG) Additional file 24:1H NMR Spectra .(6h); 1H NMR of 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid Click here for file(629K, JPEG) Acknowledgements DKA and PL are thankful to the CSIR and UGC, New Delhi, for providing JRF and SRF, respectively. file 7 1H NMR Spectra .(4g); 1H NMR of ethyl 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S7.JPEG (636K) GUID:?0457C32F-A495-4D89-9E1F-921405401EC4 Additional file 8 1H NMR Spectra .(4h); 1H NMR of ethyl 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S8.JPEG (580K) GUID:?6311DE2E-18E8-473D-836E-745F7CF6C432 Additional file 9 1H NMR Spectra .(5a); 1H NMR of methyl 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate 2191-2858-1-15-S9.JPEG (560K) GUID:?AC8CB88F-C25A-4EED-9371-A75A9F9564B0 Additional file 10 1H NMR Spectra .(5b); 1H NMR of methyl 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate 2191-2858-1-15-S10.JPEG (572K) GUID:?91C9C083-73EE-427A-B5AE-E59A84AC97DA Additional file 11 1H NMR Spectra .(5c); 1H NMR of methyl 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S11.JPEG (553K) GUID:?CE400F90-04FF-4EE0-BD59-45BC93BEE4DB Additional file 12 1H NMR Spectra .(5d); 1H NMR of methyl 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S12.JPEG (533K) GUID:?302E78DF-A0BF-4EDD-B0D1-7CF13ABE0A5F Additional file 13 1H NMR Spectra .(5e); 1H NMR of methyl 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S13.JPEG (555K) GUID:?AF3237F5-9898-48DE-8D26-36056DEA0DE9 Additional file 14 1H NMR Spectra .(5f); 1H NMR of methyl 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S14.JPEG (696K) GUID:?B977B1AE-E57C-4009-A64D-C22724FC1313 Additional file 15 1H NMR Spectra .(5g); 1H NMR of methyl 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S15.JPEG (631K) GUID:?6D22B321-BBAF-47EC-8960-2681ACD485AF Additional file 16 1H NMR Spectra .(5h); 1H NMR of methyl 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate 2191-2858-1-15-S16.JPEG (718K) GUID:?50DB3DE8-81F7-4C8F-A7C8-F7A0E66B0CEB Additional file 17 1H NMR Spectra .(6a); 1H NMR of 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetic acid 2191-2858-1-15-S17.JPEG (743K) GUID:?FBCF12DB-9884-444E-B4D4-976BD99C3479 Additional file 18 1H NMR Spectra .(6b); 1H NMR of 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetic acid 2191-2858-1-15-S18.JPEG (754K) GUID:?2650C322-EAAD-4CAA-8D09-C01D93530B4E Additional file 19 1H NMR Spectra .(6c); 1H NMR of 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S19.JPEG (704K) GUID:?EBA6D241-835B-4FCA-AEAB-C2116F455C0E Additional file 20 1H Rabbit Polyclonal to MOBKL2A/B NMR Spectra .(6d); 1H NMR of 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S20.JPEG (769K) GUID:?262AB4A1-3D19-45A9-8046-D8297C1B9F07 Additional file 21 1H NMR Spectra .(6e); 1H NMR of 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S21.JPEG (837K) GUID:?A5E043F3-6C4E-4434-913C-DC3301E8FC0F Additional file 22 1H NMR Spectra .(6f); 1H NMR of 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S22.JPEG (763K) GUID:?1C366D6A-B133-4C08-AE26-138FB698D0EE Additional file 23 1H NMR Spectra .(6g); 1H NMR of 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S23.JPEG (669K) GUID:?1B6E8E8A-4FC0-496E-AB61-BB351DCA2916 Additional file 24 1H NMR Spectra .(6h); 1H NMR of 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetic acid 2191-2858-1-15-S24.JPEG (629K) GUID:?B16AD7D2-AA47-4AAE-8480-318BB60D5023 Abstract Background Thiazolidine-2, 4-diones (TZDs) have become a pharmacologically important class of heterocyclic compounds since their introduction in the form of glitazones into the clinical use for the treatment of type 2 diabetes. TZDs lower the plasma glucose levels by acting as ligands for gamma peroxisome proliferators-activated receptors. In addition, this class of heterocyclic compounds possesses various other biological activities such as antihyperglycemic, antimicrobial, anti-inflammatory, anticonvulsant, insecticidal, etc. TZDs are also known for lowering the blood pressure thereby reducing the chances of heart failure and micro-albuminuria in the patients with type 2 diabetes. Results We have explained herein the synthesis of three series of compounds, namely, ethyl 2-((=??(-? em d /em em t /em )?M? em d /em em c /em ??100 where em dc /em average diameter of fungal colony in negative control plates, em dt /em average diameter of fungal colony in experimental plates. Abbreviations DMSO: dimethylsulfoxide; MIC: minimum inhibitory concentration; MTCC: microbial-type culture collection; SDA: Sabouraud dextrose agar; TZDs: thiazolidine-2,4-dione. Competing interests The authors declare that they have no competing interests. Supplementary Material Additional file 1:1H NMR Spectra .(4a); 1H NMR of ethyl 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Click here for file(733K, JPEG) Additional file 2:1H NMR Spectra .(4b); 1H NMR of ethyl 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Click here for file(693K, JPEG) Additional file 3:1H NMR Spectra .(4c); 1H NMR of ethyl 2-((Z)-5-((3-(4-methoxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Click here for file(539K, JPEG) Additional file 4:1H NMR Spectra .(4d); 1H NMR of ethyl 2-((Z)-5-((3-(4-chlorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Click here for file(579K, JPEG) Additional file 5:1H NMR Spectra .(4e); 1H NMR of ethyl 2-((Z)-5-((3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Click here for file(552K, JPEG) Additional file 6:1H NMR Spectra .(4f); 1H NMR of ethyl 2-((Z)-5-((3-(4-bromophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Click here for file(590K, JPEG) Additional file 7:1H NMR Spectra .(4g); 1H NMR of ethyl 2-((Z)-5-((3-(4-hydroxyphenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Click here for file(636K, JPEG) Additional file 8:1H NMR Spectra Cisapride .(4h); 1H NMR of ethyl 2-((Z)-5-((3-(4-nitrophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3-yl)acetate Click here for Cisapride file(580K, JPEG) Additional file 9:1H NMR Spectra .(5a); 1H NMR of methyl 2-((Z)-2, 4-dioxo-5-((1, 3-diphenyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Click here for file(560K, JPEG) Additional file 10:1H NMR Spectra .(5b); 1H NMR of methyl 2-((Z)-2, 4-dioxo-5-((1-phenyl-3-p-tolyl-1H-pyrazol-4-yl)methylene)thiazolidin-3-yl)acetate Click here.