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【结 构 式】

【分子编号】59286

【品名】1-benzyl-4-phenyl-4-piperidinylformamide

【CA登记号】

【 分 子 式 】C19H22N2O

【 分 子 量 】294.39656

【元素组成】C 77.52% H 7.53% N 9.52% O 5.43%

与该中间体有关的原料药合成路线共 2 条

合成路线1

该中间体在本合成路线中的序号:(XL)

In a further method, aminopiperidine (IV) was converted to the formamide (XL) by heating in ethyl formate. Formyl group reduction in (XL) with LiAlH4 provided the N-metyl amine (XLI). The N-benzyl group of (XLI) was then removed by catalytic hydrogenation over Pd/C. Alkylation of the resultant piperidine (XLII) with mesylate (XXVII) gave adduct (XLIII). After acetylation of (XLIII) in neat Ac2O, the racemic mixture was separated by chiral HPLC.

1 Giardina, G.A.M.; et al.; A reliable and efficient synthesis of SR 142801. Bioorg Med Chem Lett 1996, 6, 19, 2307.
2 Grugni, M.; Rigolio, R.; Erhard, K.F. (GlaxoSmithKline Inc.; GlaxoSmithKline SpA); Process for the preparation of 3,3-disubstd. piperidines. WO 9805640 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(IV) 54994 1-benzyl-4-phenyl-4-piperidinylamine; 1-benzyl-4-phenyl-4-piperidinamine C18H22N2 详情 详情
(XXVII) 59278 3-[1-benzoyl-3-(3,4-dichlorophenyl)-3-piperidinyl]propyl methanesulfonate C22H25Cl2NO4S 详情 详情
(XL) 59286 1-benzyl-4-phenyl-4-piperidinylformamide C19H22N2O 详情 详情
(XLI) 59287 1-benzyl-N-methyl-4-phenyl-4-piperidinamine; N-(1-benzyl-4-phenyl-4-piperidinyl)-N-methylamine C19H24N2 详情 详情
(XLII) 59288 N-methyl-4-phenyl-4-piperidinamine; N-methyl-N-(4-phenyl-4-piperidinyl)amine C12H18N2 详情 详情
(XLIII) 59289 (3-(3,4-dichlorophenyl)-3-{3-[4-(methylamino)-4-phenyl-1-piperidinyl]propyl}-1-piperidinyl)(phenyl)methanone C33H39Cl2N3O 详情 详情

合成路线2

该中间体在本合成路线中的序号:(XL)

A new method has been reported. Formamide (XL) was prepared form carbinol (II) by a modified Ritter reaction with cyanotrimethylsilane. Subsequent reduction of (XL) with LiAlH4 gave the N-methyl amine (XLI), which was converted to acetamide (XLIV) by treatment with acetyl chloride. Benzyl group hydrogenolysis in (XLIV) afforded the piperidine (X). Finally, alkylation of piperidine (X) with the chiral alkyl iodide (XXXV) provided the title compound.

1 Chen, H.G.; et al.; A practical and scalable synthesis of SR 142801, a tachykinin NK3 antagonist. Bioorg Med Chem Lett 1997, 7, 5, 555.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(II) 29470 1-benzyl-4-phenyl-4-piperidinol C18H21NO 详情 详情
(X) 59267 N-methyl-N-(4-phenyl-4-piperidinyl)acetamide C14H20N2O 详情 详情
(XXXV) 29469 [(3S)-3-(3,4-dichlorophenyl)-3-(3-iodopropyl)piperidinyl](phenyl)methanone C21H22Cl2INO 详情 详情
(XL) 59286 1-benzyl-4-phenyl-4-piperidinylformamide C19H22N2O 详情 详情
(XLI) 59287 1-benzyl-N-methyl-4-phenyl-4-piperidinamine; N-(1-benzyl-4-phenyl-4-piperidinyl)-N-methylamine C19H24N2 详情 详情
(XLIV) 59290 N-(1-benzyl-4-phenyl-4-piperidinyl)-N-methylacetamide C21H26N2O 详情 详情
Extended Information