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【结 构 式】

【分子编号】47118

【品名】tert-butyl (1S,3E)-1-benzyl-2-oxo-5-phenyl-3-pentenylcarbamate

【CA登记号】

【 分 子 式 】C23H27NO3

【 分 子 量 】365.47232

【元素组成】C 75.59% H 7.45% N 3.83% O 13.13%

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)

The reaction of N-(tert-butoxycarbonyl)-L-phenylalanine methyl ester (I) with trimethylphosphonate lithium salt (II) in THF gives the dimethyl L-phenylalanylmethylphosphonate (III), which is condensed with 2-phenylacetaldehyde (IV) by means of Na2CO3 in ethanol yielding the diphenylhexenone (V). The reduction of the carbonyl group of (V) with NaBH4 in methanol affords a diastereomeric mixture of alcohols (VI) and (VII) from which the desired major isomer (VII) is separated by column chromatography.. The epoxidation of the double bond of (VII) with MCPBA in dichloromethane gives the epoxide (VIII) (1), which is cleaved with Red-Al in THF providing the diol (IX). The reaction of (IX) with Ms-Cl and DIEA yields the intermediate dimesylate (X) which, without isolation, affords oxazolidinone (XI). The reaction of (XI) with sodium azide and 18-C-6 in DMSO gives the azide (XII), which is treated with NaH and Boc2O in THF in order to cleave the oxazolidine ring and furnish the protected aminoalcohol (XIII). Finally the azido group of (XIII) is hydrogenate with H2 over Pd/C in methanol to afford the monoprotected diaminoalcohol (XIV) the target compound.

1 Norbedo, S.; Benedetti, F.; Epoxyalcohol route to hydroxyethylene dipeptide isosteres: A new synthesis of the diaminoalcohol core of HIV-protease inhibitor ABT-538 (ritonavir). Chem Commun (London) 2001, 2, 203.
2 Benedetti, F.; et al.; Versatile and stereoselective synthesis of diamino diol dipeptide isosteres, core units of pseudopeptide HIV protease inhibitors. J Org Chem 1997, 62, 26, 9348.
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) 21673 methyl (2S)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropanoate C15H21NO4 详情 详情
(II) 29720 [(dimethoxyphosphoryl)methyl]lithium C3H8LiO3P 详情 详情
(III) 47117 dimethyl (3S)-3-[(tert-butoxycarbonyl)amino]-2-oxo-4-phenylbutylphosphonate C17H26NO6P 详情 详情
(IV) 18456 2-phenylacetaldehyde 122-78-1 C8H8O 详情 详情
(V) 47118 tert-butyl (1S,3E)-1-benzyl-2-oxo-5-phenyl-3-pentenylcarbamate C23H27NO3 详情 详情
(VI) 47119 tert-butyl (1S,2S,3E)-1-benzyl-2-hydroxy-5-phenyl-3-pentenylcarbamate C23H29NO3 详情 详情
(VII) 47120 tert-butyl (1S,2R,3E)-1-benzyl-2-hydroxy-5-phenyl-3-pentenylcarbamate C23H29NO3 详情 详情
(VIII) 47121 tert-butyl (1S,2S)-1-benzyl-2-[(2R,3S)-3-benzyloxiranyl]-2-hydroxyethylcarbamate C23H29NO4 详情 详情
(IX) 47122 tert-butyl (1S,2R,4R)-1-benzyl-2,4-dihydroxy-5-phenylpentylcarbamate C23H31NO4 详情 详情
(X) 47123 (1R,3R)-1-[(1S)-1-[(3,3-dimethylbutanoyl)amino]-2-phenylethyl]-3-[(methylsulfonyl)oxy]-4-phenylbutyl methanesulfonate C26H37NO7S2 详情 详情
(XI) 47124 (1R)-1-benzyl-2-[(4S,5S)-4-benzyl-2-oxo-1,3-oxazolidin-5-yl]ethyl methanesulfonate C20H23NO5S 详情 详情
(XII) 47125 (4S,5S)-5-[(2S)-2-azido-3-phenylpropyl]-4-benzyl-1,3-oxazolidin-2-one C19H20N4O2 详情 详情
(XIII) 47126 tert-butyl (1S,2S,4S)-4-azido-1-benzyl-2-hydroxy-5-phenylpentylcarbamate C23H30N4O3 详情 详情
(XIV) 47127 tert-butyl (1S,2S,4S)-4-amino-1-benzyl-2-hydroxy-5-phenylpentylcarbamate C23H32N2O3 详情 详情
Extended Information