Compounds for the treatment of metabolic disorders
A compound, haloalkyl technology, applied in the field of therapeutic compounds for metabolic diseases
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[0166] Materials and methods
[0167] Unless otherwise specified, in SiO 2 (40-63 mesh) for column chromatography. LCMS data were acquired as follows: Atlantis 3 μC 18 Column (3.0 × 20.0mm, flow rate = 0.85mL / min) with 0.1% HCO 2 H of H 2 O-CH 3 CN solution was eluted for 6 minutes and detected by UV at 220 nm. Gradient information: 0.0-0.3 minutes 100% H 2 O; 0.3-4.25 minutes: ramp up to 10% H 2 O-90% MeCN; 4.25-4.4 minutes: ramp up to 100% MeCN; 4.4-4.9 minutes: hold at 100% MeCN; 4.9-6.0 minutes: return to 100% H 2 O. Mass spectra were acquired using an electrospray ionization source in positive (ES+) or negative (ES-) mode.
[0168] LCMS-method 2 data acquisition is as follows: Xbridge C18 column (2.1 × 50mm, 2.5μM, flow rate 0.8mL / min) with MeCN-10mM NH 4 HCO 3 The solution was eluted for 1.5 minutes and detected by UV at 215-350 nm. Gradient information: 0-0.8 minutes: 98% MeCN 2% NH 4 HCO 3 to 98% NH 4 HCO 3 2% MeCN; 0.8-1.2 minutes: keep at 98% NH 4 H...
preparation example 1
[0174] Preparation 1: tert-butyl 4-[5-(6-chloropyridin-3-yl)-[1,2,4]oxadiazol-3-ylmethoxy]piperidine-1-carboxylate
[0175]
[0176] To a solution of 6-chloronicotinic acid (500 mg, 3.17 mmol) in THF (25 mL) was added EDCI (0.74 g, 3.89 mmol) followed by HOBt (583 mg, 3.81 mmol) and the reaction was stirred at room temperature for 10 minutes. tert-Butyl 4-(N-hydroxyamidinomethoxy)piperidine-1-carboxylate (866 mg, 3.17 mmol) was added and the reaction was stirred at room temperature for 16 hours before the solvent was removed in vacuo. The resulting residue was partitioned between EtOAc (100 mL) and water (50 mL). The organic phase was separated and washed with saturated NaHCO 3 solution, then brine and dried (MgSO 4 ), and the solvent was removed in vacuo. The residue was dissolved in toluene and the reaction was heated to 110 °C for 16 hours. The solvent was removed in vacuo and purified by column chromatography (IH:EtOAc, 70:30) to give the title compound: RT = 3.97 m...
preparation example 2
[0177] Preparation 2: tert-butyl 4-[5-(2-chloropyrimidin-5-yl)-[1,2,4]oxadiazol-3-ylmethoxy]piperidine-1-carboxylate
[0178]
[0179] To a solution of 2-chloropyrimidine-5-carboxylic acid (100 mg, 0.63 mmol) in THF (10 mL) was added 1,3-diisopropylcarbodiimide (99 μL, 0.63 mmol) and the reaction was stirred at room temperature for 10 minute. tert-butyl 4-(N-hydroxyamidinomethoxy)piperidine-1-carboxylate (172 mg, 0.63 mmol) was added, and the mixture was stirred at room temperature for 72 hours. The reaction solvent was removed in vacuo, and the resulting residue was redissolved in EtOAc (100 mL). The organic mixture was washed with water, then brine and dried (MgSO 4 ), and the solvent was removed in vacuo. The residue was dissolved in toluene and heated to 80°C for 16 hours. The solvent was removed in vacuo and purified by column chromatography (IH:EtOAc, 60:40) to give the title compound: RT = 3.77 min, m / z (ES + )=396.1[M+H] + .
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