A novel series of 2-acetamido and 2 or 3-propanamido derivatives of 4-or 5-substituted- thiazoles was designed and synthesized. Structure elucidation of the new synthesized compounds was attained by the use of 1H &13C NMR, and Mass spectrometry. Compounds were subjected to NCI in vitro assessment for their antitumor activity, at a single dose of 10μM of test compounds. Compounds bearing straight chain substituent or 4-phenyl ...