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【结 构 式】

【分子编号】62220

【品名】N-[2-(6-methoxy-2,3-dihydro-1H-inden-1-ylidene)ethyl]propanamide

【CA登记号】

【 分 子 式 】C15H19NO2

【 分 子 量 】245.3214

【元素组成】C 73.44% H 7.81% N 5.71% O 13.04%

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:(VI)

The condensation of 6-methoxyindan-1-one (I) with phosphonate (II) by means of NaH in THF gives 2-(6-methoxyindan-1-ylidene)acetonitrile (III), which is hydrogenated with h2 over Raney Co in ethanol/NH3 to yield 2-(6-methoxyindan-1-ylidene)ethylamine (IV). The acylation of (IV) with propionyl chloride (V) and TEA in THF affords the corresponding amide (VI), which is submitted to an asymmetric reduction with H2 and a chiral Ru catalyst to provide N-[2-(6-methoxyindan-1(S)-yl)ethyl]propionamide (VII). The bromination of (VII) with Br2 and NaOAc in methanol gives the 5-bromo derivative (VIII), which is demethylated by means of BBr3 in dichloromethane to yield the hydroxy compound (IX). The reaction of (IX) with allyl bromide (X) by means of NaH in DMF affords the allyl ether (XI), which is submitted to a Claisen rearrangement in N,N-diethylaniline at 200 C to provide the 7-allyl derivative (XII).The reaction of (XII) with ozone in methanol gives the acetaldehyde derivative (XIII), which is reduced with NaBH4 in methanol to yield the ethanol derivative (XIV). The hydrogenolysis of the Br substituent of (XIV) by means of H2 over Pd/C in methanol/TEA affords the dihydroxy compound (XV), which is treated with MsCl and pyridine to provide the mesylate (XVI). Finally, this compound is cyclized by means of TEA in refluxing ethyl acetate to furnish the target indeno[5,4-b]furan derivative.

1 Chilman-Blair, K.; Castaner, J.; Silvestre, J.S.; Bayes, M.; TAK-375. Drugs Fut 2003, 28, 10, 950.
2 Uchikawa, O.; Fukatsu, K.; Tokunoh, R.; et al.; Synthesis of a novel series of tricyclic indan derivatives as melatonin receptor agonists. J Med Chem 2002, 45, 19, 4222.
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) 34515 6-methoxy-1-phenyl-1-indanol C16H16O2 详情 详情
(II) 10045 Diethyl cyanomethylphosphonate 2537-48-6 C6H12NO3P 详情 详情
(III) 62218 2-(6-methoxy-2,3-dihydro-1H-inden-1-ylidene)acetonitrile C12H11NO 详情 详情
(IV) 62219 2-(6-methoxy-2,3-dihydro-1H-inden-1-ylidene)ethylamine; 2-(6-methoxy-2,3-dihydro-1H-inden-1-ylidene)-1-ethanamine C12H15NO 详情 详情
(V) 15967 propanoyl chloride; propionyl chloride 79-03-8 C3H5ClO 详情 详情
(VI) 62220 N-[2-(6-methoxy-2,3-dihydro-1H-inden-1-ylidene)ethyl]propanamide C15H19NO2 详情 详情
(VII) 62221 N-{2-[(1S)-6-methoxy-2,3-dihydro-1H-inden-1-yl]ethyl}propanamide C15H21NO2 详情 详情
(VIII) 62222 N-{2-[(1S)-5-bromo-6-methoxy-2,3-dihydro-1H-inden-1-yl]ethyl}propanamide C15H20BrNO2 详情 详情
(IX) 62223 N-{2-[(1S)-5-bromo-6-hydroxy-2,3-dihydro-1H-inden-1-yl]ethyl}propanamide C14H18BrNO2 详情 详情
(X) 11463 3-Bromo-1-propene; 3-Bromopropene;allyl bromide 106-95-6 C3H5Br 详情 详情
(XI) 62224 N-{2-[(1S)-6-(allyloxy)-5-bromo-2,3-dihydro-1H-inden-1-yl]ethyl}propanamide C17H22BrNO2 详情 详情
(XII) 62225 N-{2-[(1S)-7-allyl-5-bromo-6-hydroxy-2,3-dihydro-1H-inden-1-yl]ethyl}propanamide C17H22BrNO2 详情 详情
(XIII) 62226 N-{2-[(1S)-5-bromo-6-hydroxy-7-(2-oxoethyl)-2,3-dihydro-1H-inden-1-yl]ethyl}propanamide C16H20BrNO3 详情 详情
(XIV) 62227 N-{2-[(1S)-5-bromo-6-hydroxy-7-(2-hydroxyethyl)-2,3-dihydro-1H-inden-1-yl]ethyl}propanamide C16H22BrNO3 详情 详情
(XV) 62228 N-{2-[(1S)-6-hydroxy-7-(2-hydroxyethyl)-2,3-dihydro-1H-inden-1-yl]ethyl}propanamide C16H23NO3 详情 详情
(XVI) 62229 2-{(3S)-5-hydroxy-3-[2-(propionylamino)ethyl]-2,3-dihydro-1H-inden-4-yl}ethyl methanesulfonate C17H25NO5S 详情 详情
Extended Information