Abstract
Background & Objective: A new series of thiazoles substituted on the chromene scaffold were prepared by facial approaches starting from (E)-1-(2,3-Dihydrochromen-4-ylidene)thiosemicarbazide derivatives (2a,b). The thiosemicarbazides (2a,b) were reacted with a series of α-halo carbonyl compounds to give the corresponding rhodanine analogues and reacted also with C-acetyl-or Cethoxy- N-hydrazonoyl chlorides to afford the corresponding tri- and tetra-substituted hybrid hydrazinyl thiazole substituted chromenes.
Methods: The newly synthesized compounds were screened for their in vitro antimicrobial and antitumor activities by agar diffusion method and MTT assay, respectively.
Results: The results of the antimicrobial activity revealed that some of the new compounds exhibited excellent activity against pathogenic microorganism; Candida albicans compared with Ciprofloxacin and nystatin, as the reference drugs.
All of the tested compounds exhibited significant cytotoxic activities comparable to that of the reference drug; Doxorubicin® (on HCT116 (colorectal carcinoma human cell line).
Keywords: Thiosemicarbazide, chromene scaffold, hydrazonoyl chlorides, antimicrobial activity, HCT116 (colorectal carcinoma), MTT assay.
Graphical Abstract
[http://dx.doi.org/10.1002/chem.201100927] [PMID: 21618299]
[PMID: 15542776]
[http://dx.doi.org/10.1016/j.tet.2005.08.020]
[http://dx.doi.org/10.1007/s12039-009-0058-z]
[http://dx.doi.org/10.1007/s00253-007-1305-1] [PMID: 18092158]
[http://dx.doi.org/10.1093/annonc/mdn775] [PMID: 19246715]
[http://dx.doi.org/10.1021/jm800861c] [PMID: 19397322]
[http://dx.doi.org/10.3390/molecules16021166] [PMID: 21270733]
[http://dx.doi.org/10.1007/s11164-015-2231-y]
[http://dx.doi.org/10.1002/jhet.1613]
[http://dx.doi.org/10.1134/S107036321512035X]
[http://dx.doi.org/10.3987/COM-12-12515]
[http://dx.doi.org/10.3987/COM-12-12483]
[http://dx.doi.org/10.1039/c29710000684]
[http://dx.doi.org/10.1002/jhet.5570170814]
[http://dx.doi.org/10.1016/j.cclet.2016.10.022]
[http://dx.doi.org/10.1080/10426507.2014.903402]
[http://dx.doi.org/10.1002/jhet.3087]