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【结 构 式】

【分子编号】53392

【品名】2-[2-(3,4-dihydro-1-isoquinolinyl)ethyl]-1H-isoindole-1,3(2H)-dione

【CA登记号】n/a

【 分 子 式 】C19H16N2O2

【 分 子 量 】304.34832

【元素组成】C 74.98% H 5.3% N 9.2% O 10.51%

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:(V)

Acylation of phenethylamine (III) with acid chloride (II), prepared from phthalimidopropionic acid (I) and SOCl2, gave amide (IV). Subsequent Bischler-Napieralski cyclization of amide (IV) in the presence of POCl3 and P2O5 produced the corresponding dihydroisoquinoline, which was isolated as the hydrochloride salt (V). Catalytic hydrogenation of (V) using PtO2 afforded the tetrahydroisoquinoline (VI). After protection of (VI) as the N-Boc derivative (VII), the primary amine (VIII) was liberated by phthaloyl group hydrazinolysis. Coupling of amine (VIII) with nicotinic acid (IX) employing EDC and HOBt yielded the nicotinamide compound (X). Subsequent acidic cleavage of the Boc protecting group of (X) provided amine (XI), which was finally acylated with 4-butylbenzenesulfonyl chloride (XII) in the presence of resin-bound piperidine to furnish the target sulfonamide.

1 Barn, D.R.; et al.; Parallel synthesis and biological activity of a new class of high affinity and selective delta-opioid ligand. Bioorg Med Chem 2001, 9, 10, 2609.
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) 53389 3-Phthalimidopropionic acid; Phthalyl-beta-alanine 3339-73-9 C11H9NO4 详情 详情
(II) 53390 3-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)propanoyl chloride n/a C11H8ClNO3 详情 详情
(III) 18333 Phenethylamine; 2-Phenyl-1-ethanamine 64-04-0 C8H11N 详情 详情
(IV) 53391 3-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-N-phenethylpropanamide n/a C19H18N2O3 详情 详情
(V) 53392 2-[2-(3,4-dihydro-1-isoquinolinyl)ethyl]-1H-isoindole-1,3(2H)-dione n/a C19H16N2O2 详情 详情
(VI) 53393 2-[2-(1,2,3,4-tetrahydro-1-isoquinolinyl)ethyl]-1H-isoindole-1,3(2H)-dione n/a C19H18N2O2 详情 详情
(VII) 53394 tert-butyl 1-[2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)ethyl]-3,4-dihydro-2(1H)-isoquinolinecarboxylate n/a C24H26N2O4 详情 详情
(VIII) 53395 tert-butyl 1-(2-aminoethyl)-3,4-dihydro-2(1H)-isoquinolinecarboxylate n/a C16H24N2O2 详情 详情
(IX) 10752 Nicotinic acid; Niacin 59-67-6 C6H5NO2 详情 详情
(X) 53396 tert-butyl 1-{2-[(3-pyridinylcarbonyl)amino]ethyl}-3,4-dihydro-2(1H)-isoquinolinecarboxylate n/a C22H27N3O3 详情 详情
(XI) 53397 N-[2-(1,2,3,4-tetrahydro-1-isoquinolinyl)ethyl]nicotinamide n/a C17H19N3O 详情 详情
(XII) 53398 4-n-Butylbenzenesulphonyl chloride 54997-92-1 C10H13ClO2S 详情 详情
Extended Information