N-(1-benzyl-4-phenyl-4-piperidinyl)acetamide -Drug Synthesis Database

【结构式】

【分子编号】54993

【品名】N-(1-benzyl-4-phenyl-4-piperidinyl)acetamide

【CA登记号】

【分子式】C₂₀H₂₄N₂O

【分子量】308.42344

【元素组成】C 77.89% H 7.84% N 9.08% O 5.19%

与该中间体有关的原料药合成路线共 5 条

合成路线1 合成路线2 合成路线3 合成路线4 合成路线5

合成路线1

该中间体在本合成路线中的序号：(II)

The intermediate piperidine (III) was prepared from 1-benzyl-4-hydroxy-4-phenylpiperidine (I) via conversion to acetamide (II) by means of a Ritter reaction with acetonitrile and H2SO4, followed by hydrogenolysis of the N-benzyl protecting group

参考文献中间体

合成目标

【1】 Hale, J.J.; Finke, P.E.; MacCross, M.; A facile synthesis of the novel neurokinin A antagonist SR 48968. Bioorg Med Chem Lett 1993, 3, 2, 319.
【2】 Emonds-Alt, X.; Goulaouic, P.; Proietto, V.; Van Broeck, D. (Sanofi-Synthelabo); Arylalkylamines, process for their preparation and pharmaceutical compsns. containing them. EP 0474561; FR 2666335; FR 2678267; JP 1992261155; US 5236921; US 5350852 .
【3】 Descamps, M.; Radisson, J.; Anne-Archard, G. (Sanofi-Synthélabo); Process for the preparation of the (-)-N-methyl-N-[4-(4-phenyl-4-acetyl-aminopiperidin-1-yl)-2-(3,4-dichlorophenyl)butyl]-benzamide and its pharmaceutically acceptable salts. EP 0698601 .
【4】 Finke, P.E.; Mills, S.G.; Hale, J.J.; MacCoss, M. (Merck & Co., Inc.); Process of making chiral 2-aryl-1,4-butanediamine derivs.. WO 9407839 .
【5】 Emonds-Alt, X.; Proietto, V.; Van Broeck, D.; Vilain, P.; Advenier, C.; Neliat, G.; Le Fur, G.; Breliere, J.-C.; Pharmacological profile and chemical synthesis of SR 48968, a non-peptide antagonist of the neurokinin A (NK2) receptor. Bioorg Med Chem Lett 1993, 3, 5, 925.

中间体序号	中间体编号	品名	分子式	供应商	用于合成
(I)	29470	1-benzyl-4-phenyl-4-piperidinol	C₁₈H₂₁NO	详情	详情
(II)	54993	N-(1-benzyl-4-phenyl-4-piperidinyl)acetamide	C₂₀H₂₄N₂O	详情	详情
(III)	59283	N-(4-phenyl-4-piperidinyl)acetamide	C₁₃H₁₈N₂O	详情	详情

合成路线2

该中间体在本合成路线中的序号：(III)

N-Benzyl-4-hydroxy-4-phenylpiperidine (II) was prepared by addition of phenyllithium to N-benzyl-4-piperidone (I). Carbinol (II) was then converted to acetamide (III) by acid-catalyzed Ritter reaction with acetonitrile. Replacement of the acetamido for an N-Boc group in (III) was effected by acidic hydrolysis of amide (III) to give (IV), followed by treatment with di-tert-butyl dicarbonate. The resultant 1-benzyl-4-(Boc-amino)-4-phenylpiperidine (V) was subjected to catalytic hydrogenolysis in the presence of Pd/C, and the N-debenzylated piperidine (VI) was reprotected as the N-trityl derivative (VII) by treatment with triphenylmethyl chloride and triethylamine. Reduction of the N-Boc group of (VII) by LiAlH4, yielded the N-methyl amine (VIII). After acylation of (VIII) with acetyl chloride to acetamide (IX), its N-trityl group was cleaved by treatment with hot aqueous formic acid to produce the intermediate piperidine (X).

参考文献中间体

合成目标

【1】 Bichon, D.; Van Broeck, D.; Proietto, V.; Gueule, P.; Emonds-Alt, X. (Sanofi-Synthélabo); Novel N-(3,4-dichlorophenyl-propyl)-piperidine derivs. as selective human NK3-receptor antagonists. EP 0673928; FR 2717477; FR 2717478; FR 2719311; JP 1996048669; US 5741910; US 5942523; US 6124316 .

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)	15720	1-benzyltetrahydro-4(1H)-pyridinone; 1-Benzyl-4-piperidone; N-Benzyl-4-piperidone; 1-(benzyl)-4-piperidinone; 1-benzylpiperidin-4-one; 1-(benzyl)piperidin-4-one	3612-20-2	C₁₂H₁₅NO	详情	详情
(II)	29470	1-benzyl-4-phenyl-4-piperidinol		C₁₈H₂₁NO	详情	详情
(III)	54993	N-(1-benzyl-4-phenyl-4-piperidinyl)acetamide		C₂₀H₂₄N₂O	详情	详情
(IV)	54994	1-benzyl-4-phenyl-4-piperidinylamine; 1-benzyl-4-phenyl-4-piperidinamine		C₁₈H₂₂N₂	详情	详情
(V)	59263	tert-butyl 1-benzyl-4-phenyl-4-piperidinylcarbamate		C₂₃H₃₀N₂O₂	详情	详情
(VI)	54998	tert-butyl 4-phenyl-4-piperidinylcarbamate		C₁₆H₂₄N₂O₂	详情	详情
(VII)	59264	tert-butyl 4-phenyl-1-trityl-4-piperidinylcarbamate		C₃₅H₃₈N₂O₂	详情	详情
(VIII)	59265	N-methyl-4-phenyl-1-trityl-4-piperidinamine; N-methyl-N-(4-phenyl-1-trityl-4-piperidinyl)amine		C₃₁H₃₂N₂	详情	详情
(IX)	59266	N-methyl-N-(4-phenyl-1-trityl-4-piperidinyl)acetamide		C₃₃H₃₄N₂O	详情	详情
(X)	59267	N-methyl-N-(4-phenyl-4-piperidinyl)acetamide		C₁₄H₂₀N₂O	详情	详情

合成路线3

该中间体在本合成路线中的序号：(III)

An alternative preparation of the precursor 4-(N-methyl-N-acetyl)amino-4-phenylpiperidine (XXXIX) has been reported. The N-benzyl protecting group of piperidine (III) was replaced with an N-Boc group by catalytic hydrogenolysis to (XXXVI), followed by treatment with Boc2O to yield (XXXVII). Amide (XXXVII) alkylation with iodomethane under phase-transfer conditions gave the N-methyl derivative (XXXVIII). Subsequent N-Boc group cleavage in (XXXVIII) was accomplished by using zinc chloride in CH2Cl2 to afford the piperidine-ZnCl2 complex (XXXIX). This was then alkylated with mesylate (XXVII), and the title compound was finally isolated from the racemic mixture by means of preparative chiral HPLC.

参考文献中间体

合成目标

【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	分子式	供应商	用于合成
(III)	54993	N-(1-benzyl-4-phenyl-4-piperidinyl)acetamide	C₂₀H₂₄N₂O	详情	详情
(XXVII)	59278	3-[1-benzoyl-3-(3,4-dichlorophenyl)-3-piperidinyl]propyl methanesulfonate	C₂₂H₂₅Cl₂NO₄S	详情	详情
(XXXVI)	59283	N-(4-phenyl-4-piperidinyl)acetamide	C₁₃H₁₈N₂O	详情	详情
(XXXVII)	59284	tert-butyl 4-(acetylamino)-4-phenyl-1-piperidinecarboxylate	C₁₈H₂₆N₂O₃	详情	详情
(XXXVIII)	59285	tert-butyl 4-[acetyl(methyl)amino]-4-phenyl-1-piperidinecarboxylate	C₁₉H₂₈N₂O₃	详情	详情
(XXXIX)	59267	N-methyl-N-(4-phenyl-4-piperidinyl)acetamide	C₁₄H₂₀N₂O	详情	详情

合成路线4

该中间体在本合成路线中的序号：(XVI)

Acetamide (XVI) was obtained by the Ritter reaction of 1-benzyl-4-phenyl-piperidin-4-ol (XV) with acetonitrile. Acidic hydrolysis of amide (XVI) provided the aminopiperidine (XVII), which was converted into urea (XVIII) upon treatment with N,N-dimethylcarbamoyl chloride. Hydrogenolytic cleavage of the N-benzyl group of (XVIII) gave piperidine (XIX), which was finally alkylated with the mesylate (XIV) to furnish the title compound.

参考文献中间体

合成目标

【1】 Emonds-Alt, X.; Grossriether, I.; Gueule, P.; Proietto, V.; Van Broeck, D. (Sanofi-Synthélabo); Substd. heterocyclic cpds., preparation method therefor and pharmaceutical compsns. containing same. EP 1156049; FR 2729952; FR 2729953; FR 2729954; JP 1999507324; JP 2001131171; US 5641777; WO 9623787 .

中间体序号	中间体编号	品名	分子式	供应商	用于合成
(XIV)	54992	2-[(2R)-4-benzoyl-2-(3,4-difluorophenyl)morpholinyl]ethyl methanesulfonate	C₂₀H₂₁F₂NO₅S	详情	详情
(XV)	29470	1-benzyl-4-phenyl-4-piperidinol	C₁₈H₂₁NO	详情	详情
(XVI)	54993	N-(1-benzyl-4-phenyl-4-piperidinyl)acetamide	C₂₀H₂₄N₂O	详情	详情
(XVII)	54994	1-benzyl-4-phenyl-4-piperidinylamine; 1-benzyl-4-phenyl-4-piperidinamine	C₁₈H₂₂N₂	详情	详情
(XVIII)	54995	N'-(1-benzyl-4-phenyl-4-piperidinyl)-N,N-dimethylurea	C₂₁H₂₇N₃O	详情	详情
(XIX)	54996	N,N-dimethyl-N'-(4-phenyl-4-piperidinyl)urea	C₁₄H₂₁N₃O	详情	详情

合成路线5

该中间体在本合成路线中的序号：(I)

Acidic hydrolysis of 4-acetylamino-1-benzyl-4-phenylpiperidine (I) gives diamine (II). Subsequent acylation of (II) with dimethylcarbamoyl chloride affords urea (III). The N-benzyl protecting group is then removed by catalytic hydrogenolysis over Pd/C to furnish piperidine (IV)

参考文献中间体

合成目标

【1】 Proietto, V.; Van Broeck, D.; Edmonds-Alt, X.; Aulombard, A. (Sanofi-Synthelabo); Ureidopiperidine derivs. as selective human NK3 receptor antagonists. EP 1119552; JP 2002527423; US 6465489; WO 0021931 .

中间体序号	中间体编号	品名	分子式	供应商	用于合成
(I)	54993	N-(1-benzyl-4-phenyl-4-piperidinyl)acetamide	C₂₀H₂₄N₂O	详情	详情
(II)	54994	1-benzyl-4-phenyl-4-piperidinylamine; 1-benzyl-4-phenyl-4-piperidinamine	C₁₈H₂₂N₂	详情	详情
(III)	54995	N'-(1-benzyl-4-phenyl-4-piperidinyl)-N,N-dimethylurea	C₂₁H₂₇N₃O	详情	详情
(IV)	54996	N,N-dimethyl-N'-(4-phenyl-4-piperidinyl)urea	C₁₄H₂₁N₃O	详情	详情

Extended Information