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【结 构 式】

【分子编号】19707

【品名】(4S,5S)-4-methyl-5-phenyl-1,3-oxazolidin-2-one

【CA登记号】17097-67-5

【 分 子 式 】C10H11NO2

【 分 子 量 】177.20288

【元素组成】C 67.78% H 6.26% N 7.9% O 18.06%

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:(XI)

The condensation of racemic (3aRS,4RS,6SR,7aSR)-6-(hydroxymethyl)-4-(2-methoxyphenyl)perhydroisoindol-4-ol (I) with 2(S)-(2-methoxyphenyl)propionic acid (II) by means of hydroxybenzotriazole and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide in dichloromethane gives the diastereomeric amide (III), which is tosylated with tosyl chloride and submitted to chromatography yielding the (3aS,4S,6R,7aR)(S)-enantiomer (IV) as an optically pure isomer. Finally, this compound is allowed to react with potassium cyanide in hot DMSO affording RPR-111905. The starting compounds, the perhydroisoindole (I) and the propionic acid (II) have been obtained as follows: a) The cyclization of 5-(acetoxymethyl)-2-cyclohexen-1-one (V) with N-(butoxymethyl)-N-(trimethylsilylmethyl)benzylamine (VI) by means of trifluoroacetic acid (TFA) in dichloromethane gives racemic (3aRS,6SR,7aSR)-6-(acetoxymethyl)-2-benzylperhydroisoinol-4-one (VII), which is submitted to a Grignard condensation with 2-methoxyphenylmagnesium bromide (VIII) in THF yielding the racemic (3aRS,4RS,6SR,7aSR)(IX). Finally, this compound is debenzylated by hydrogenation with H2 over Pd/C in hot ethanol affording the desired racemic diol (I). b) The condensation of 2-(2-methoxyphenyl)acetic acid (X) with (4S,5S)-4-methyl-5-phenyloxazolidin-2-one (XI) by means of NaH, pivaloyl chloride and butyllithium gives the acylated oxazolidinone (XII), which is methylated regioselectively with sodium hexamethyldisylazane (Na-HMDS) and methyl iodide in THF yielding the 2(S)-methyl derivative (XIII). Finally, the hydrolysis of the oxazolidinone group of (XIII) with LiOH in THF-water affords the desired 2(S)-(2-methoxyphenyl)propionic acid (II).

1 Mutti, S.; et al.; Practical enantiospecific synthesis of RPR 111905: A novel non-peptide substance P antagonist. Tetrahedron Lett 1996, 37, 48, 8743.
2 Achard, D.; Peyronel, J.-F.; Tabart, M. (Aventis Pharma SA); Perhydroisoindole derivs. as antagonists of substance P. FR 2727411; JP 1998509970; US 5739351; WO 9616939 .
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) 19697 (3aS,4R,6R,7aR)-6-(hydroxymethyl)-4-(2-methoxyphenyl)octahydro-1H-isoindol-4-ol C16H23NO3 详情 详情
(II) 19698 (2S)-2-(2-methoxyphenyl)propionic acid C10H12O3 详情 详情
(III) 19699 (2S)-1-[(4S,6R)-4-hydroxy-6-(hydroxymethyl)-4-(2-methoxyphenyl)octahydro-2H-isoindol-2-yl]-2-(2-methoxyphenyl)-1-propanone C26H33NO5 详情 详情
(IV) 19700 [(3aR,5R,7R,7aS)-7-hydroxy-7-(2-methoxyphenyl)-2-[(2S)-2-(2-methoxyphenyl)propanoyl]octahydro-1H-isoindol-5-yl]methyl 4-methylbenzenesulfonate C33H39NO7S 详情 详情
(V) 19701 [(1R)-5-oxo-3-cyclohexen-1-yl]methyl acetate C9H12O3 详情 详情
(VI) 19702 N-benzyl-N-(butoxymethyl)-N-[(trimethylsilyl)methyl]amine; N-(butoxymethyl)(phenyl)-N-[(trimethylsilyl)methyl]methanamine C16H29NOSi 详情 详情
(VII) 19703 [(3aR,5R,7aS)-2-benzyl-7-oxooctahydro-1H-isoindol-5-yl]methyl acetate C18H23NO3 详情 详情
(VIII) 19704 bromo(2-methoxyphenyl)magnesium C7H7BrMgO 详情 详情
(IX) 19705 (3aS,4R,6R,7aR)-2-benzyl-6-(hydroxymethyl)-4-(2-methoxyphenyl)octahydro-1H-isoindol-4-ol C23H29NO3 详情 详情
(X) 19706 2-(2-methoxyphenyl)acetic acid 93-25-4 C9H10O3 详情 详情
(XI) 19707 (4S,5S)-4-methyl-5-phenyl-1,3-oxazolidin-2-one 17097-67-5 C10H11NO2 详情 详情
(XII) 19708 (4S,5S)-3-[2-(2-methoxyphenyl)acetyl]-4-methyl-5-phenyl-1,3-oxazolidin-2-one C19H19NO4 详情 详情
(XIII) 19709 (4S,5S)-3-[(2S)-2-(2-methoxyphenyl)propanoyl]-4-methyl-5-phenyl-1,3-oxazolidin-2-one C20H21NO4 详情 详情
Extended Information