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【结 构 式】

【分子编号】45454

【品名】2-bromopyrimidine

【CA登记号】4595-60-2

【 分 子 式 】C4H3BrN2

【 分 子 量 】158.9853

【元素组成】C 30.22% H 1.9% Br 50.26% N 17.62%

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:(VI)

Condensation of 4-hydroxypiperidine (I) with methyl 3,4-difluorobenzoate (II) in DMSO yields derivative (III), which is first mesylated with methanesulfonyl chloride (MsCl) and Et3N in CH2Cl2 and then subjected to reaction with NaN3 in DMF to provide azido derivative (IV). Hydrogenation of (IV) over Pd/C in HOAc/H2O/dioxane affords amino derivative (V), which is then condensed with 2-bromopyrimidine (VI) in DMSO in the presence of DIEA, yielding derivative (VII). Methyl ester group of (VII) is then subjected to saponification by means of aqueous NaOH in THF/MeOH, and the resulting carboxylic acid is coupled to diaminopropionate derivative (VIII) in DMF by means of EDC, HOBt and N-methylmorpholine (NMM) to furnish amide (IX). Hydrolysis of the t-butyl ester group of (IX) by treatment with TFA in CH2Cl2 affords carboxylic acid (X), which is finally hydrogenated over Pd/C in dioxane/H2O to give the target compound.

1 Ajito, K.; Katano, K.; Kubota, D.; Ishikawa, M.; Murakami, S.; Hachisu, M.; Yamamoto, M. (Meiji Seika Kaisha, Ltd.); Aminopiperidine derivs. as integrin alphavbeta3 antagonists. EP 1074543; WO 9952872 .
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) 12076 4-Piperidinol; 4-Hydroxypiperidine 5382-16-1 C5H11NO 详情 详情
(II) 45450 methyl 3,4-difluorobenzoate 369-25-5 C8H6F2O2 详情 详情
(III) 45451 methyl 3-fluoro-4-(4-hydroxy-1-piperidinyl)benzoate 107-82-4 C13H16FNO3 详情 详情
(IV) 45452 methyl 4-(4-azido-1-piperidinyl)-3-fluorobenzoate C13H15FN4O2 详情 详情
(V) 45453 methyl 4-(4-amino-1-piperidinyl)-3-fluorobenzoate C13H17FN2O2 详情 详情
(VI) 45454 2-bromopyrimidine 4595-60-2 C4H3BrN2 详情 详情
(VII) 45455 methyl 3-fluoro-4-[4-(2-pyrimidinylamino)-1-piperidinyl]benzoate C17H19FN4O2 详情 详情
(VIII) 31423 tert-butyl (2S)-3-amino-2-[(phenylsulfonyl)amino]propanoate C13H20N2O4S 详情 详情
(IX) 45456 tert-butyl (2S)-3-([3-fluoro-4-[4-(2-pyrimidinylamino)-1-piperidinyl]benzoyl]amino)-2-[(phenylsulfonyl)amino]propanoate C29H35FN6O5S 详情 详情
(X) 45457 (2S)-3-([3-fluoro-4-[4-(2-pyrimidinylamino)-1-piperidinyl]benzoyl]amino)-2-[(phenylsulfonyl)amino]propionic acid C25H27FN6O5S 详情 详情
Extended Information