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A compound, medicinal salt technology, applied in the field of cannabinoid receptor 2 (CB2) agonists
Active Publication Date: 2018-10-12
CHENGDU UNIVERSITY OF TECHNOLOGY
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[0005] The diverse clinical application value of CB2 receptor agonists shows its broad prospects in the field of medicine. However, so far, no CB2 receptor agonists have become marketed drugs. Better druggable CB2 receptor agonists are of great significance to this field
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[0022] The first step: the preparation of 4-[2-(trifluoromethoxy)phenyl]piperidine-1-carbonitrile
[0023]
[0024] Add 4-[2-(trifluoromethoxy)phenyl]piperidine (10.0g, 40.8mmol), potassium carbonate (11.1g, 80.2mmol) to 100mL dichloromethane / water (1:1), Stir and cool to 0°C. Slowly drop cyanobromide (5.3 g, 50.0 mmol) dissolved in 20 mL of dichloromethane into the above solution, react at 0°C for 30 min, return to room temperature and continue the reaction for 2 h, separate the organic layer, and use saturated sodium bicarbonate solution to saturate The organic layer was washed with sodium chloride solution, dried over anhydrous magnesium sulfate, and the organic phase was concentrated under reduced pressure. The crude product was subjected to silica gel column chromatography (petroleum ether / ethyl acetate=7 / 3) to obtain 4-[2-(trifluoromethoxy 8.9 g of phenyl]piperidine-1-carbonitrile (yield: 81%).
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Abstract
The invention relates to a propanamide coupled piperidinoxadiazole and imidazo[1,2-a]pyrazine derivative shown as a formula I and / or medicinal salts thereof and a preparation method thereof, as well as a pharmaceutical composition comprising the compound. The compound shown as the formula I is a potential cannabinoid receptor 2(CB2) agonist and can be used for treating and / or preventing diseases such as inflammation, inflammatory bowel diseases, glaucoma, diabetes, nephropathy, cardiomyopathy and the like. The structural formula is as shown in the specification, wherein R1 is aryl and heteroaryl; and R2 is H, (C1-C6) linear alkyl or branched alkyl.
Description
technical field [0001] The invention belongs to the field of medicinal chemistry, and specifically relates to a propionamide-linked piperidinyl oxadiazole and imidazo[1,2-a]pyrazine compounds and physiologically acceptable salts thereof described in the claims , their preparation methods and their role in the prevention and / or treatment of pain, inflammation, inflammatory bowel disease, glaucoma, diabetes, diabetic retinopathy, atherosclerosis, age-related macular degeneration, acute liver failure, liver fibrosis, Pulmonary fibrosis, renal fibrosis, systemic fibrosis, ischemia-reperfusion injury, acute allograft rejection, chronic allograft nephropathy, diabetic nephropathy, glomerular nephropathy, cardiomyopathy, heart failure, myocardial ischemia Blood, myocardial infarction, systemic sclerosis, thermal injury, burns, hypertrophic scars, gingivitis fever, liver cirrhosis or tumors, osteoporosis, neurodegeneration, stroke and other cannabinoid receptor 2 (CB2) agonist-related...
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