　 -Drug Synthesis Database

【结构式】

【分子编号】42834

【品名】　

【CA登记号】

【分子式】C₁₆H₁₄N₄O

【分子量】278.31352

【元素组成】C 69.05% H 5.07% N 20.13% O 5.75%

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：(VIII)

The known imidazoindenopyrazinone (I) was converted to oxime (II) by treatment with isoamyl nitrite and NaH. Subsequent reduction of oxime (II) by means of zinc and AcOH produced acetamide (III), which was hydrolyzed to amine (IV) upon refluxing in 2 N HCl. After protection of amine (IV) as the N-Boc derivative (V), alkylation with 1-bromo-3-chloropropane (VI) in the presence of NaH gave rise to the spiro derivative (VII). Deprotection of the Boc group of (VII) to give amine (VIII) was effected by treatment with trifluoroacetic acid. Finally, Eschweiler-Clarke reductive alkylation of (VIII) with formaldehyde and formic acid furnished the desired N-methyl derivative.

参考文献中间体

合成目标

【1】 Jimonet, P.; Boireau, A.; Chevé, M.; et al.; Spiro-imidazo[1,2-a]indeno[1,2-e]pyrazine-4-one derivatives are mixed AMPA and NMDA glycine-site antagonists active in vivo. Bioorg Med Chem Lett 1999, 9, 20, 2921.
【2】 Aloup, J.-C.; Audiau, F.; Barreau, M.; Damour, D.; Genevois-Borella, A.; Jimonet, P.; Mignani, S.; Ribeill, Y. (Aventis Pharma SA); Spiro[heterocycle-imidazo[1,2-a]indeno[1, 2-e]pyrazine]-4'-ones, preparation thereof and drugs containing same. JP 1998508311; US 5777114; WO 9614318 .

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)	39726	5,10-dihydro-4H-imidazo[1,2-a]indeno[1,2-e]pyrazin-4-one		C₁₃H₉N₃O	详情	详情
(II)	42829	4H-imidazo[1,2-a]indeno[1,2-e]pyrazine-4,10(5H)-dione 10-oxime		C₁₃H₈N₄O₂	详情	详情
(III)	42830	N-(4-oxo-5,10-dihydro-4H-imidazo[1,2-a]indeno[1,2-e]pyrazin-10-yl)acetamide		C₁₅H₁₂N₄O₂	详情	详情
(IV)	42831	10-amino-5,10-dihydro-4H-imidazo[1,2-a]indeno[1,2-e]pyrazin-4-one		C₁₃H₁₀N₄O	详情	详情
(V)	42832	tert-butyl 4-oxo-5,10-dihydro-4H-imidazo[1,2-a]indeno[1,2-e]pyrazin-10-ylcarbamate		C₁₈H₁₈N₄O₃	详情	详情
(VI)	10358	1-Bromo-3-chloropropane	109-70-6	C₃H₆BrCl	详情	详情
(VII)	42833			C₂₁H₂₂N₄O₃	详情	详情
(VIII)	42834			C₁₆H₁₄N₄O	详情	详情

Extended Information