Combinations of opioid receptor ligands and cytochrome p450 inhibitors
A technology of inhibitors and compositions, which can be used in drug combinations, medical preparations containing active ingredients, anti-inflammatory agents, etc., and can solve problems such as vomiting.
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Embodiment 1
[0278] Example 1: Intermediate 1 : Methyl 2-cyano-2-(oxan-4-ylidene)acetate
[0279] To a 50 ml round bottom flask equipped with a Dean-Stark distillation apparatus and condenser was added tetrahydro-4H-pyran-4-one (4.61 ml, 50 mmol), methyl cyanoacetate (5.3 ml, 60 mmol), ammonium acetate (1 g, 13 mmol), acetic acid (0.57 ml, 10 mmol) and benzene (30 ml). The mixture was refluxed until no more water collected in the Dean-Stark (2 hours), cooled, benzene (30ml) added and the organic layer washed with water (50ml). use CH 2 Cl 2 (3 x 50ml) to extract the aqueous layer. The combined organic phases were washed with saturated NaHCO 3 (100ml), washed with brine (100ml), dried (MgSO 4 ), filtered and concentrated. Via normal phase SiO 2 Purification by chromatography (10 to 60% EtOAc / hexanes) gave methyl 2-cyano-2-(oxan-4-ylidene)acetate (6.30 g, 70%, m / z:181.1[M+H] + measured value).
[0280] Intermediate 2 : 2-cyano-2-[4-(4-fluorophenyl)oxan-4-yl)methyl acetate
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Embodiment 2
[0286] Example 2: Benzyl({2-[4-(4-fluorophenyl)oxan-4-yl]ethyl})amine (Compound 8)
[0287] 2-[4-(4-Fluorophenyl)oxan-4-yl]ethan-1-amine (250mg, 1.12mmol) and NA 2 SO 4 (159mg, 1.12mmol) in anhydrous CH 2 Cl 2 To a solution in (5ml) was added benzaldehyde (0.17ml, 1.68mmol). The reaction was stirred overnight. The reaction mixture was filtered and concentrated. The residue was dissolved in 5 ml MeOH at 0 °C and NaBH was added in one portion 4 (51 mg, 1.34 mmol). The reaction was stirred at 0 °C for 1 h. The solution was then treated with H 2 O (10ml) quenched with CH 2 Cl 2 (3×20ml), washed with brine (10ml) and washed with Na 2 SO 4 dry. Via normal phase SiO 2 Chromatography (0 to 10% MeOH / CH 2 Cl 2 ) to give benzyl({2-[4-(4-fluorophenyl)oxan-4-yl]ethyl})amine (200 mg, 60%, m / z : 314.2[M+H] + measured value).
[0288] Intermediate 5: 2,2-Dimethyl-4-(4-methylphenyl)oxan-4-ol
[0289] in N 2 n-BuLi (26.3ml, 1.6M in hexane, 42mmol) was added dropwise to ...
Embodiment 3
[0297] Example 3: {2-[2,2-Dimethyl-4-(4-methylphenyl)oxan-4-yl]ethyl}[(3-methylphenyl)methyl]amine (compound 32)
[0298] 2-[2,2-Dimethyl-4-(4-methylphenyl)oxan-4-yl]acetaldehyde (61.6mg, 0.25mmol), 3-methylbenzylamine (63μl , 0.5mmol) and acetic acid (50μl, 8.6mmol) of CH 2 Cl 2 (3ml) The solution was stirred at room temperature for 1h, then sodium triacetoxyborohydride (106mg, 0.50mmol) was added. The resulting mixture was stirred at room temperature for 18 h. The mixture was concentrated and dissolved in MeOH and purified by HPLC to afford {2-[2,2-Dimethyl-4-(4-methylphenyl)oxan-4-yl]ethyl}[ (3-Methylphenyl)methyl]amine as a white solid (35 mg, 40%, m / z: 352.3 [M+H] + measured value).
[0299] Intermediate 8 : Methyl 2-cyano-2-[(9Z)-6-oxaspiro[4.5]decane-9-ylidene]acetate
[0300] Add 6-oxaspiro[4.5]decane-9-one (6g, 39mmol, which was obtained by Hanschke, E.Chem.Ber.1955,88 , prepared in 1053), methyl cyanoacetate (4.1ml, 46.7mmol), ammonium acetate (780mg, 10....
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