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【结 构 式】

【分子编号】68619

【品名】N-methoxy-N,1-dimethylpiperidine-4-carboxamide

【CA登记号】 

【 分 子 式 】C9H18N2O2

【 分 子 量 】186.254

【元素组成】C 58.04% H 9.74% N 15.04% O 17.18%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(II)

Metalation of 2-chloropyridine (I) with BuLi in the presence of N,Ndimethylethanolamine in hexane at –78 °C, followed by condensation with N-methoxy-N,1-dimethylpiperidine-4-carboxamide (II) in hexane provides (6-chloropyridin-2-yl)(1-methylpiperidin-4-yl)methanone (III). Condensation of chloropyrimidine derivative (III) with benzophenone imine, Pd2dba3, BINAP and t-BuONa in refluxing toluene yields compound (IV), which by hydrolysis with HCl in THF furnishes (6-aminopyridin-2-yl)(1-methylpiperidin-4-yl)methanone (V). N-Acylation of amine (V) with 2,4,6-trifluorobenzoyl chloride (VI), optionally in the presence of Et3N in THF or refluxing 1,4-dioxane, generates lasmiditan (VII), which is finally treated with NH4Cl in MeOH or HCl in refluxing i-PrOH .

1 Kohlman, D.T., Mancuso, V., Cohen, M.P. et al. (Eli Lilly and Company). Pyridinoylpiperidines as 5-HT1F agonists. EP 1492786, JP 2005530722, JP 2010159272, US 2005222206, US 7423050, US 8044207, WO 2003084949.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 17503 2-chloropyridine 109-09-1 C5H4ClN 详情 详情
(II) 68619 N-methoxy-N,1-dimethylpiperidine-4-carboxamide   C9H18N2O2 详情 详情
(III) 68620 (6-chloropyridin-2-yl)(1-methylpiperidin-4-yl)methanone   C12H15ClN2O 详情 详情
(IV) 68621 (6-((diphenylmethylene)amino)pyridin-2-yl)(1-methylpiperidin-4-yl)methanone   C25H25N3O 详情 详情
(V) 68622 (6-aminopyridin-2-yl)(1-methylpiperidin-4-yl)methanone   C12H17N3O 详情 详情
(VI) 68623 2,4,6-trifluorobenzoyl chloride 79538-29-7 C7H2ClF3O 详情 详情
(VII) 68624 2,4,6-trifluoro-N-(6-(1-methylpiperidine-4-carbonyl)pyridin-2-yl)benzamide   C19H18F3N3O2 详情 详情
Extended Information