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【结 构 式】

【分子编号】22824

【品名】3-(aminooxy)dihydro-2(3H)-furanone

【CA登记号】

【 分 子 式 】C4H7NO3

【 分 子 量 】117.10452

【元素组成】C 41.03% H 6.03% N 11.96% O 40.99%

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:(XIV)

Nitration of 5-bromoisoquinoline (I) using KNO3 in H2SO4 gave 5-bromo-8-nitroisoquinoline (II), which upon methylation with dimethyl sulfate was converted to the isoquinolinium salt (III). Subsequent reduction of (III) with NaBH4 in AcOH provided tetrahydroisoquinoline (IV). This was coupled with phenylboronic acid (V) in the presence of Pd(PPh3)4 and NaHCO3 to yield the 5-phenylisoquinoline (VI). Further reduction of the nitro group of (VI) by catalytic hydrogenation over Pd/C afforded amine (VII). The pyrroloisoquinoline (VIII) was then formed by condensation of (VII) with chloral and hydroxylamine in boiling water, followed by cyclization of the intermediate (oxymino)acetamide in methanesulfonic acid at 120 C. After chlorosulfonation of (VIII), the sulfonyl chloride (IX) was condensed with dimethylamine in THF to afford sulfonamide (X). Hydroxylamine derivative (XIV) was prepared by O-alkylation of N-hydroxyphthalimide (XI) with alpha-bromo-gamma-butyrolactone (XII), followed by hydrolysis of the phthalimide (XIII) in boiling 1 M HCl. Hydroxylamine derivative (XIV) was then condensed with sulfonamide (X) to furnish oxime (XV). Finally, hydrolysis of the butyrolactone group of (XV) with aqueous NaOH gave the title compound.

1 Watjen, F.; Drejer, J. (NeuroSearch A/S); Novel indole-2,3-dione-3-oxime derivs.. EP 0869958; JP 2000501432; US 6124285; WO 9814447 .
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) 22811 5-bromoisoquinoline C9H6BrN 详情 详情
(II) 22812 5-bromo-8-nitroisoquinoline C9H5BrN2O2 详情 详情
(III) 22813 5-bromo-2-methyl-8-nitro-2lambda(5)-isoquinoline C10H8BrN2O2 详情 详情
(IV) 22814 5-bromo-2-methyl-8-nitro-1,2,3,4-tetrahydroisoquinoline C10H11BrN2O2 详情 详情
(V) 16593 Phenylboronic acid;Benzeneboronic acid;Phenylboron dihydroxide 98-80-6 C6H7BO2 详情 详情
(VI) 22816 2-methyl-8-nitro-5-phenyl-1,2,3,4-tetrahydroisoquinoline C16H16N2O2 详情 详情
(VII) 22817 2-methyl-5-phenyl-1,2,3,4-tetrahydro-8-isoquinolinylamine; 2-methyl-5-phenyl-1,2,3,4-tetrahydro-8-isoquinolinamine C16H18N2 详情 详情
(VIII) 22818 8-methyl-5-phenyl-6,7,8,9-tetrahydro-1H-pyrrolo[3,2-h]isoquinoline-2,3-dione C18H16N2O2 详情 详情
(IX) 22819 4-(8-methyl-2,3-dioxo-2,3,6,7,8,9-hexahydro-1H-pyrrolo[3,2-h]isoquinolin-5-yl)benzenesulfonyl chloride C18H15ClN2O4S 详情 详情
(X) 22820 N,N-dimethyl-4-(8-methyl-2,3-dioxo-2,3,6,7,8,9-hexahydro-1H-pyrrolo[3,2-h]isoquinolin-5-yl)benzenesulfonamide C20H21N3O4S 详情 详情
(XI) 13505 N-Hydroxyphthalimide; 2-Hydroxy-1H-isoindole-1,3(2H)-dione 524-38-9 C8H5NO3 详情 详情
(XII) 22822 3-bromodihydro-2(3H)-furanone 5061-21-2 C4H5BrO2 详情 详情
(XIII) 22823 2-[(2-oxotetrahydro-3-furanyl)oxy]-1H-isoindole-1,3(2H)-dione C12H9NO5 详情 详情
(XIV) 22824 3-(aminooxy)dihydro-2(3H)-furanone C4H7NO3 详情 详情
(XV) 22825 N,N-dimethyl-4-(8-methyl-2-oxo-3-[[(2-oxotetrahydro-3-furanyl)oxy]imino]-1,2,6,7,8,9-hexahydro-3H-pyrrolo[3,2-h]isoquinolin-5-yl)benzenesulfonamide C24H26N4O6S 详情 详情
Extended Information