Thiazol-aminobenzamide acetate derivative and application thereof
A technology of alkyl and methyl, applied in the field of medicinal chemistry, can solve problems such as drug resistance that cannot be effectively solved, and achieve the effect of broadening the scope
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Embodiment 1
[0058] Example 1 (3-((5-methyl-4-phenylthiazol-2-yl)amino)benzoyl)glycine methyl ester
[0059] Step a:
[0060]
[0061] Add 11.4341 g (0.12 mol) of ammonium thiocyanate and 20 mL of acetone into a 100 mL oblique-necked reaction flask equipped with mechanical stirring and a condenser, and stir evenly through mechanical stirring. 16.8034 g (0.13 mol) of benzoyl chloride was added dropwise (dropped in 10 min), and the solution changed from clear to white turbid. Heat to reflux, add 14.1147 g (0.10 mol) m-aminobenzoic acid in 4 batches, monitor the reaction process by TLC (ethyl acetate:petroleum ether = 4:1), and complete the reaction in 8 h. Cool, filter, and dry the obtained solid to obtain 28.0041 g of light yellow powder 3-(3-benzoylthioureido)benzoic acid, m.p. 184 ~ 186 ℃.
[0062] Add 0.9913 g (0.12 mol) of 3-(3-benzoylthioureido)benzoic acid and 33 mL of 10% NaOH into a 100 mL oblique-necked reaction flask with a condenser, the measured pH=13, magnetic stirring, an...
Embodiment 2
[0069] Example 2 (3-((5-methyl-4-(p-tolyl)thiazol-2-yl)amino)benzoyl)glycine methyl ester
[0070]
[0071] The operation was the same as above to obtain 0.3018g of white powder, yield 68.23%, m.p.187 ~ 188°C. 1 H NMR (DMSO-D 6 , 400 MHz), δ : 2.36 (s, 3H, CH 3 ), 2.42 (s, 3H, CH 3 ), 3.67(s, 3H, OCH 3 ), 4.02 (d, J = 4.0 Hz, 2H, NHCH 2 ), 7.26-8.07 (m, 8H, 2×C 6 h 4 ), 8.90 (t, J = 4.0, 1H, CONH), 10.30 (s, 1H, NH).
Embodiment 3
[0072] Example 3 3-((4-(4-chlorophenyl)-5-methylthiazol-2-yl)amino)benzoyl)glycine methyl ester
[0073]
[0074] The operation was the same as above to obtain 0.3016g of yellow powder, yield 70.44%, m.p.158 ~ 159°C. 1 H NMR (CDCl 3 , 400MHz), δ : 1.41 (s, 3H, CH 3 ), 2.44 (s, 3H, OCH 3 ), 4.39(d, J = 4.0 Hz, 2H, NHCH 2 ), 7.34-8.01 (m, 8H, 2×C 6 h 4 ).
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