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【结 构 式】

【分子编号】60168

【品名】1H-indole-1-carboxylate

【CA登记号】

【 分 子 式 】C9H6NO2

【 分 子 量 】160.15218

【元素组成】C 67.5% H 3.78% N 8.75% O 19.98%

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:(II)

Indole (I) is protected as the indole N-carboxylate (II) by treatment of its lithio derivative with carbon dioxide gas in cold THF. Subsequent metalation with tert-butyllithium, followed by addition to cyclopentanone (III) gives rise to the carbinol adduct (IV). Dehydration of (IV) under acidic conditions furnishes 2-(1-cyclopentenyl)indole (V). Diels-Alder condensation of (V) with maleimide (VI) at 190 C provides the pentacyclic system (VII). Further dehydrogenation of (VII) employing DDQ leads to the fused carbazole compound (VIII). Regioselective halogenation of (VIII) at position 3 by means of NBS yields the corresponding aryl bromide (IX). Then, displacement of the bromide group of (IX) with either CuCN or Zn(CN)2 produces nitrile (X). This is finally reduced to the primary amine by catalytic hydrogenation in the presence of Raney nickel and ammonia.

1 Chatterjee, S.; Ator, M.A.; Hudkins, R.L.; Bihovsky, R.; Dunn, D. (Cephalon, Inc.); Novel multicyclic cpds. and the use thereof. WO 0185686 .
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) 15292 Indole; 1H-indole 120-72-9 C8H7N 详情 详情
(II) 60168 1H-indole-1-carboxylate C9H6NO2 详情 详情
(III) 15113 cyclopentanone 120-92-3 C5H8O 详情 详情
(IV) 60169 1-(1H-indol-2-yl)cyclopentanol C13H15NO 详情 详情
(V) 60170 2-(1-cyclopenten-1-yl)-1H-indole C13H13N 详情 详情
(VI) 19711 1H-pyrrole-2,5-dione 541-59-3 C4H3NO2 详情 详情
(VII) 60171 3a,3b,4,5,6,6a,7,11c-octahydro-1H-cyclopenta[a]pyrrolo[3,4-c]carbazole-1,3(2H)-dione C17H16N2O2 详情 详情
(VIII) 60172 4,5,6,7-tetrahydro-1H-cyclopenta[a]pyrrolo[3,4-c]carbazole-1,3(2H)-dione C17H12N2O2 详情 详情
(IX) 60173 10-bromo-4,5,6,7-tetrahydro-1H-cyclopenta[a]pyrrolo[3,4-c]carbazole-1,3(2H)-dione C17H11BrN2O2 详情 详情
(X) 60174 1,3-dioxo-2,3,4,5,6,7-hexahydro-1H-cyclopenta[a]pyrrolo[3,4-c]carbazole-10-carbonitrile C18H11N3O2 详情 详情
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