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【结 构 式】

【分子编号】31029

【品名】2-([[(3R)-3-methyl-2-oxopiperidinyl]amino]carbonyl)-5-nitrobenzoic acid

【CA登记号】

【 分 子 式 】C14H15N3O6

【 分 子 量 】321.28972

【元素组成】C 52.34% H 4.71% N 13.08% O 29.88%

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:(X)

The esterification of 2-aminopropionic acid (I) with SOCl2 and methanol gives the methyl ester (II), whih is treated with benzaldehyde and TEA in dichloromethane yielding the benzylideneimine (III). The alkylation of (III) with N-(3-iodopropyl)phthalimide (IV) by means of LDA in THF affords the substituted pentanoate (V), which is treated with 1N HCl to give 2-amino-2-methyl-5-(phthalimido)pentanoic acid methyl ester (VI). The cyclization of (VI) by means of hydrazine and sodium methoxide in methanol yields the racemic 3-amino-3-methylpiperidin-2-one (VII), which is submitted to optical resolution with optically active binaphthyl phosphoric acid to afford 3(R)-amino-3-methy-piperidin-2-one (VIII). The reaction of (VIII) with 4-nitrophthalic anhydride (IX) in dioxane gives the amide (X), which is heated under vacuum to give the phthalimide (XI). The oxidation of (XI) with mCPBA in carbon tetrachloride yields the piperidinedione (XII), which is finally reduced at the nitro group by the usual methods.

1 Miyachi, H.; Koiso, Y.; Shirai, R.; Niwayama, S.; Liu, J.O.; Hashimoto, Y.; Tumor necrosis factor-alpha production enhancing activity of substituted 3'-methylthalidomide: Influence of substituents at the phthaloyl moiety on the activity and stereoselectivity. Chem Pharm Bull 1998, 46, 7, 1165.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
10498 Benzaldehyde;Benzoic aldehyde;Phenylmethanal 100-52-7 C7H6O 详情 详情
(I) 31032 alanine 302-72-7 C3H7NO2 详情 详情
(II) 25315 methyl 2-aminopropanoate; Alanine, methyl ester 7625-53-8 C4H9NO2 详情 详情
(III) 31022 methyl 2-[[(E)-benzylidene]amino]propanoate C11H13NO2 详情 详情
(IV) 31023 2-(3-iodopropyl)-1H-isoindole-1,3(2H)-dione C11H10INO2 详情 详情
(V) 31024 methyl 5-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-2-methyl-2-[[(E)-benzylidene]amino]pentanoate C22H22N2O4 详情 详情
(VI) 31025 methyl 2-amino-5-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-2-methylpentanoate C15H18N2O4 详情 详情
(VII) 31026 3-amino-3-methyl-2-piperidinone C6H12N2O 详情 详情
(VIII) 31027 (3R)-3-amino-3-methyl-2-piperidinone C6H12N2O 详情 详情
(IX) 31028 5-nitro-2-benzofuran-1,3-dione 5466-84-2 C8H3NO5 详情 详情
(X) 31029 2-([[(3R)-3-methyl-2-oxopiperidinyl]amino]carbonyl)-5-nitrobenzoic acid C14H15N3O6 详情 详情
(XI) 31030 2-[(3R)-3-methyl-2-oxopiperidinyl]-5-nitro-1H-isoindole-1,3(2H)-dione C14H13N3O5 详情 详情
(XII) 31031 2-[(3R)-3-methyl-2,6-dioxopiperidinyl]-5-nitro-1H-isoindole-1,3(2H)-dione C14H11N3O6 详情 详情
Extended Information