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【结 构 式】

【分子编号】39371

【品名】benzyl (3S)-8-methyl-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepin-3-ylcarbamate

【CA登记号】

【 分 子 式 】C18H18N2O3S

【 分 子 量 】342.4186

【元素组成】C 63.14% H 5.3% N 8.18% O 14.02% S 9.36%

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:(VII)

Alkylation of N-acetyl-D-cysteine (I) with 1-fluoro-5-methyl-2-nitrobenzene (II) gave adduct (III). After hydrolysis of the acetamido group of (III) with aqueous sulfuric acid, the resulting amine (IV) was protected as the benzyl carbamate (V). Reduction of the nitro group of (V) provided amino acid (VI), which was cyclized to the benzothiazepinone (VII) using EDC. Subsequent alkylation of (VII) with ethyl bromoacetate under phase-transfer conditions yielded (VIII) (1). Cleavage of both N-Cbz group and ethyl ester by HBr in AcOH, followed by introduction of the N-Boc group afforded intermediate (X) (2). Optionally, hydrogenolysis of the N-Cbz group of (VIII) provided amino lactam (XI). This was coupled with N-Boc-O-benzylserine (XII) to give amide (XIII). Then, basic hydrolysis of the ethyl ester produced carboxylic acid (XIV).

1 Dodey, P.; Luccarini, J.-M.; Martinez, J.; Amblard, M.; Daffix, I. (Fournier Industrie et Santé); Peptides agonists of bradykinine B2 receptor. FR 2756566; WO 9824809 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
10101 Benzyloxycarbonyl chloride; Benzyl chloroformate; 1-[[(Chlorocarbonyl)oxy]methyl]benzene 501-53-1 C8H7ClO2 详情 详情
16640 Ethyl 2-bromoacetate; Ethyl bromoacetate 105-36-2 C4H7BrO2 详情 详情
(I) 39365 (2S)-2-(acetamido)-3-sulfanylpropionic acid 616-91-1 C5H9NO3S 详情 详情
(II) 39366 2-fluoro-4-methyl-1-nitrobenzene 446-34-4 C7H6FNO2 详情 详情
(III) 39367 (2S)-2-(acetamido)-3-[(5-methyl-2-nitrophenyl)sulfanyl]propionic acid C12H14N2O5S 详情 详情
(IV) 39368 (2S)-2-amino-3-[(5-methyl-2-nitrophenyl)sulfanyl]propionic acid C10H12N2O4S 详情 详情
(V) 39369 (2S)-2-[[(benzyloxy)carbonyl]amino]-3-[(5-methyl-2-nitrophenyl)sulfanyl]propionic acid C18H18N2O6S 详情 详情
(VI) 39370 (2S)-3-[(2-amino-5-methylphenyl)sulfanyl]-2-[[(benzyloxy)carbonyl]amino]propionic acid C18H20N2O4S 详情 详情
(VII) 39371 benzyl (3S)-8-methyl-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepin-3-ylcarbamate C18H18N2O3S 详情 详情
(VIII) 39372 ethyl 2-[(3S)-3-[[(benzyloxy)carbonyl]amino]-8-methyl-4-oxo-3,4-dihydro-1,5-benzothiazepin-5(2H)-yl]acetate C22H24N2O5S 详情 详情
(IX) 39376 2-[(3S)-3-amino-8-methyl-4-oxo-3,4-dihydro-1,5-benzothiazepin-5(2H)-yl]acetic acid C12H14N2O3S 详情 详情
(X) 39377 2-[(3S)-3-[(tert-butoxycarbonyl)amino]-8-methyl-4-oxo-3,4-dihydro-1,5-benzothiazepin-5(2H)-yl]acetic acid C17H22N2O5S 详情 详情
(XI) 39373 ethyl 2-[(3S)-3-amino-8-methyl-4-oxo-3,4-dihydro-1,5-benzothiazepin-5(2H)-yl]acetate C14H18N2O3S 详情 详情
(XII) 16886 (2S)-3-(benzyloxy)-2-[(tert-butoxycarbonyl)amino]propionic acid; N-alpha-t-BOC-o-benzyl-L-serine 23680-31-1 C15H21NO5 详情 详情
(XIII) 39374 ethyl 2-[(3S)-3-([(2S)-3-(benzyloxy)-2-[(tert-butoxycarbonyl)amino]propanoyl]amino)-8-methyl-4-oxo-3,4-dihydro-1,5-benzothiazepin-5(2H)-yl]acetate C29H37N3O7S 详情 详情
(XIV) 39375 2-[(3S)-3-([(2S)-3-(benzyloxy)-2-[(tert-butoxycarbonyl)amino]propanoyl]amino)-8-methyl-4-oxo-3,4-dihydro-1,5-benzothiazepin-5(2H)-yl]acetic acid C27H33N3O7S 详情 详情
Extended Information