S-32502-1, -Drug Synthesis Database

【结构式】

【药物名称】S-32502-1

【化学名称】N-tert-Butyl-N-(2-phenyl-1H-imidazol-4-ylmethylene)amine N-oxide
　　　　　　(Z)-N-tert-Butyl-alpha-(2-phenyl-1H-imidazol-4-yl)nitrone

【CA登记号】

【分子式】C₁₄H₁₇N₃O

【分子量】243.31109

【开发单位】Servier (Originator)

【药理作用】Cerebrovascular Diseases, Treatment of, NEUROLOGIC DRUGS, Stroke, Treatment of, Antioxidants, Free Radical Scavengers

合成路线1 合成路线2

合成路线1

The bromination of 1,1,1-trifluoroacetone (I) according to McBee and Burton gives 3,3-dibromo-1,1,1-trifluoroacetone (II), which is hydrolyzed with aqueous NaOAc to the glyoxal (III). The cyclization of (III) with benzaldehyde (IV) and ammonia in methanol yields 2-phenyl-4-(trifluoromethyl)-1H-imidazole (V), which is converted into the carbonitrile (VI) by reaction with hot aqueous ammonium hydroxide. The reduction of (VI) with diisobutylaluminum hydride in THF affords the carbaldehyde (VII), which is finally condensed with N-tert-butylhydroxylamine (VIII) by means of NaHCO3 in hot ethanol.

参考文献中间体

【1】 Dhainaut, A.; et al.; Synthesis, structure, and neuroprotective properties of novel imidazolyl nitrones. J Med Chem 2000, 43, 11, 2165.
【2】 Dhainaut, A.; Lestage, P.; Lockhart, B.; Tizot, A.; Goldstein, S. (ADIR et Cie.); Nitrone derivs., process for their preparation and pharmaceutical compsns. containing them. CA 2274621; EP 0967207; FR 2780404; JP 2000026428; US 6034250 .

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)	35449	1,1,1-trifluoroacetone	421-50-1	C₃H₃F₃O	详情	详情
(II)	35450	3,3-dibromo-1,1,1-trifluoroacetone	431-67-4	C₃HBr₂F₃O	详情	详情
(III)	35451	3,3,3-trifluoro-2-oxopropanal		C₃HF₃O₂	详情	详情
(IV)	10498	Benzaldehyde;Benzoic aldehyde;Phenylmethanal	100-52-7	C₇H₆O	详情	详情
(V)	35452	2-phenyl-4-(trifluoromethyl)-1H-imidazole		C₁₀H₇F₃N₂	详情	详情
(VI)	35435	(1R)-2-[12-[(2R)-2-(benzoyloxy)propyl]-2,4,6,7,9,11-hexamethoxy-3,10-dioxo-3,10-dihydro-1-perylenyl]-1-methylethyl benzoate		C₄₆H₄₂O₁₂	详情	详情
(VII)	35454	2-phenyl-1H-imidazole-4-carbaldehyde		C₁₀H₈N₂O	详情	详情
(VIII)	35455	N-(tert-butyl)hydroxylamine; 2-(hydroxyamino)-2-methylpropane		C₄H₁₁NO	详情	详情

合成路线2

The hydrolysis of 2-phenyl-4-(trifluoromethyl)-1H-imidazole (I) with 1N NaOH gives 2-phenyl-1H-imidazole-4-carboxylic acid (II), which is condensed with N,O-dimethylhydroxylamine (III) by means of TBTU and DIEA in dichloromethane to yield the amide (IV). The reduction of (IV) with DIBAL in THF affords 2-phenyl-1H-imidazole-4-carbaldehyde (V), which is finally condensed with N-tert-butylhydroxylamine (VI) by means of NaHCO3 in hot ethanol to provide the target nitrone.

参考文献中间体

【1】 Dhainaut, A.; et al.; Synthesis, structure, and neuroprotective properties of novel imidazolyl nitrones. J Med Chem 2000, 43, 11, 2165.

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)	35452	2-phenyl-4-(trifluoromethyl)-1H-imidazole		C₁₀H₇F₃N₂	详情	详情
(II)	51473	2-phenyl-1H-imidazole-4-carboxylic acid		C₁₀H₈N₂O₂	详情	详情
(III)	13361	(Methoxyamino)methane; N,O-Dimethylhydroxylamine	1117-97-1	C₂H₇NO	详情	详情
(IV)	51474	N-methoxy-N-methyl-2-phenyl-1H-imidazole-4-carboxamide		C₁₂H₁₃N₃O₂	详情	详情
(V)	35454	2-phenyl-1H-imidazole-4-carbaldehyde		C₁₀H₈N₂O	详情	详情
(VI)	35455	N-(tert-butyl)hydroxylamine; 2-(hydroxyamino)-2-methylpropane		C₄H₁₁NO	详情	详情

Extended Information

Drug NewChemical Entity Original Patent(1)