Abstract
Thirteen 3-substituted benzothiazolone derivatives have been synthesized. Their chemical structures have been elucidated by IR and NMR spectral data and by elemental analyses. Among these compounds, 1-?3-[2(3H)-benzothiazolon-3-yl[propanoyl]morpholine (5b); 1-?3-[2(3H)-benzothiazolon-3-yl[propanoyl]-4-benzylpiperidine++ + (5c); 1-?3-[2(3H)-benzothiazolon-3-yl[-propanoyl]-4-phenylpiperazine (5d); 3-[3-(4-benzylpiperidine-1-yl)propyl]-2(3H)-benzothiazolone (5k); 3-[3-(4-benzylpiperazine-1-yl)propyl]-2(3H)-benzothiazolone (5I); 3-[3-(4-phenylpiperazine-1-yl)propyl]-2(3H)-benzothiazolone (5m) have been found to be significantly more active than the others.
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