1-aryl-3-[4-(pyridine-2-ylmethoxy) phenyl urea compound and application
A technology of -3-{4-{, compounds, applied in the field of medicine, achieving good development and application prospects and novel structure types
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[0054] The following schemes outline the preparative steps for preparing compounds of the invention.
[0055]
[0056] Among them, R, R 3 , R 4 , R 5 as mentioned earlier.
[0057] The present invention is described in detail with the following examples. However, it should be understood that the present invention is not limited to the specific recited examples below.
Embodiment 1
[0058] Example 1: 1-(3,5-difluorophenyl)-3-{4-{[4-(3-methoxypropoxy)-3-methylpyridin-2-yl]methoxy }phenyl}urea (compound Z01)
[0059] Step A: Preparation of 4-(3-methoxypropoxy)-3-methyl-2-[(4-nitrophenoxy)methyl]pyridine
[0060] Add 4-nitrophenol (13.91g, 0.10mol), 2-chloromethyl-3-methyl-4-(3-methoxypropoxy)pyridine hydrochloride (26.62g , 0.10mol) and absolute ethanol (200mL). A 3 mol / L sodium hydroxide aqueous solution (100 mL) was added dropwise at room temperature. After the dropwise addition, react at room temperature for 6h. After the reaction, part of the ethanol was distilled off under reduced pressure, and 200 mL of water was added to the residue to precipitate a large amount of white solid. The filter cake was filtered with suction, washed with water, and dried in air to obtain 30.68 g of white solid, with a yield of 92.6%. The product was used directly in the next step without further purification.
[0061] Step B: Preparation of 4-{[4-(3-methoxypropoxy)-3-m...
Embodiment 2
[0065] Example 2: 1-{4-{[4-(3-methoxypropoxy)-3-methylpyridin-2-yl]methoxy}phenyl}-3-[3-(trifluoro Preparation of methyl) phenyl] urea (compound Z02)
[0066] Referring to the preparation method of Example 1, 0.16 g of white solid was obtained with a yield of 41%, m.p.: 126.2-127.3°C; 1 H NMR (400MHz, DMSO-d 6 )δ8.98(s,1H),8.61(s,1H),8.27(d,J=5.7Hz,1H),8.01(s,1H),7.56(d,J=8.5Hz,1H),7.51- 7.48(m,1H),7.36(d,J=2.2Hz,1H),7.34(d,J=2.3Hz,1H),7.29(d,J=7.5Hz,1H),7.00(d,J=5.8 Hz,1H),6.98(d,J=2.2Hz,1H),6.96(d,J=2.2Hz,1H),5.11(s,2H),4.11(t,J=6.2Hz,2H),3.49( t,J=6.2Hz,2H),3.25(s,3H),2.18(s,3H),2.02-1.96(m,3H).ESI-MS(m / z):490.3([M+H] + ); 512.1 ([M+Na] + ).
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