1-((s)-1-(3-chloro-5-fluoro-2-((4-(1h-pyrazol-1-yl)-2-methylquinolin-8-yloxy)methyl)phenyl)ethyl)-imidazolidine-2,4-dione derivatives and related compounds as bradykinin (BK) b2 receptor antagonist for treating skin diseases
A compound, C1-C3 technology, applied in skin diseases, drug combinations, diseases, etc., can solve the problems of low bioavailability, hindering practicality, low metabolic stability, etc.
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example 1
[0178] Example 1: Preparation of Compound No. 1
[0179]
[0180] (S)-2-(3-(1-(3-chloro-5-fluoro-2-((4-(4-fluoro-1H-pyrazol-1-yl)-2-methylquinoline-8 -yloxy)methyl)phenyl)ethyl)-2,5-two-side oxyimidazolidin-1-yl)acetamide
[0181] step a. Synthesis of 3-amino-5-fluoro-2-methylbenzoic acid methyl ester
[0182] Methyl 5-fluoro-2-methyl-3-nitrobenzoate [Gillmore, A.T. et al., Org. Process Res. Dev. 2012, 16, 1897-1904] (4.69 g; 22 mmol) was dissolved in MeOH (100 mL ) and added palladium-10% Pd on charcoal (200 mg). The solution was flushed with nitrogen and vacuumed three times, then flushed with hydrogen. The reaction mixture was stirred vigorously under 1 atm of hydrogen. After completion of the reaction as indicated by TLC (21 h), the solution was filtered through silica gel. The filter cake was washed with methanol (5 x 20 mL). The filtrate was concentrated under reduced pressure, and the residue was purified by flash chromatography on silica gel (eluting with EA...
example 2
[0213] Example 2: Preparation of Compound No. 2
[0214]
[0215] 1-((S)-1-(3-chloro-5-fluoro-2-((4-(4-fluoro-1H-pyrazol-1-yl)-2-methylquinolin-8-yloxy Base) methyl) phenyl) ethyl) -3-ethyl-5-methylimidazolidine-2,4-dione diastereomer B
[0216] step a. Diastereomer of methyl 2-((S)-1-(3-chloro-5-fluoro-2-((4-methoxyphenoxy)methyl)phenyl)ethylamino)propanoate Synthesis of A and B
[0217] (S)-1-(3-Chloro-5-fluoro-2-(4-methoxyphenoxy)methyl)phenyl)ethylamine (220 mg, 710 μmol), methyl pyruvate (72.0 μL, 79.8 mg, 781 μmol) and borane-pyridine-complex (107.6 μl, 1.06 mmol) were dissolved in propan-2-ol (5 mL). About 10 μL of 0.5M aqueous HCl was added and the reaction mixture was stirred overnight at RT. After the reaction was complete (TLC), the solution was poured onto an SCX-cartridge (Phenomenex, StrataSCX, 0.6 mmol / g) and eluted with methanol. The resin was then washed with about 8M methanolic ammonia solution to give the crude product after evaporation of the solv...
example 3
[0230] Example 3: Preparation of Compound No. 3
[0231]
[0232] (S)-1-(1-(3-chloro-5-fluoro-2-((4-(4-fluoro-1H-pyrazol-1-yl)-2-methylquinolin-8-yloxy Base) methyl) phenyl) ethyl) imidazolidin-2-one
[0233] step a. Synthesis of (S)-tert-butyl 2-(1-(3-chloro-5-fluoro-2-((4-methoxyphenoxy)methyl)phenyl)ethylamino)ethylcarbamate
[0234] (S)-1-(3-chloro-5-fluoro-2-(4-methoxyphenoxy)methyl)phenyl)ethylamine (100mg, 323μmol), N-Boc-2-aminoethyl Aldehyde (113.1 μl, 355 μmol) and borane-pyridine-complex (48.9 μl, 484 μmol) were dissolved in 2-propanol (4 mL). About 10 μL of 0.5M HCl solution was added and the reaction mixture was stirred overnight at RT. After the reaction was complete (TLC), saturated NaHCO was added 3 aqueous solution and the aqueous phase was extracted with DCM (3x). Combined organic layers were passed through Na 2 SO 4 Dry and evaporate to dryness under reduced pressure after filtration. The crude product was purified by flash chromatography on sil...
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