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【结 构 式】

【分子编号】61346

【品名】3,5-dichloro-N-((3R)-3-(3,4-dichlorophenyl)-2-{[(2,2-dimethylpropanoyl)oxy]imino}-6-methyl-5-heptenyl)-N-methylbenzamide

【CA登记号】

【 分 子 式 】C27H30Cl4N2O3

【 分 子 量 】572.35768

【元素组成】C 56.66% H 5.28% Cl 24.78% N 4.89% O 8.39%

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:(XII)

The intermediate chiral aldehyde (XIV) has been obtained as follows: Acylation of sarcosine methyl ester (II) with 3,5-dichlorobenzoyl chloride (I) provides the N-benzoyl aminoester (III). The dilithium derivative of 3,4-dichlorophenylacetic acid (IV) is condensed with ester (III) to furnish, after acidic work-up, the N-benzoyl amino ketone (V). Subsequent alkylation of (V) with 1-bromo-3-methyl-2-butene (VI) affords (VII). Treatment of ketone (VII) with hydroxylamine yields a mixture of E- and Z- oximes, from which the Z-isomer (VIII) is isolated by column chromatography. Resolution of racemic (VIII) is then accomplished by two procedures. Coupling of (VIII) with N-Boc-D-phenylglycine (IX) produces a diastereomeric mixture of O-acyl oximes, from which isomer (X) can be separated by recrystallization. Hydrazinolysis of the N-acyl oxime (X) furnishes the target (R)-enantiomer (XI). Alternatively, oxime (VIII) is acylated by pivaloyl chloride, and subsequently separated into enantiomers by means of chiral chromatography. The desired isomer (XII) is then subjected to hydrazinolysis, yielding (XI)

1 Carruthers, N.I.; Alaimo, C.A.; Shih, N.-Y.; Lavey, B.J.; Ting, P.C.; Reichard, G.A. (Schering Corp.); Substd. oximes as neurokinin antagonists. EP 1032561; WO 9926924 .
2 Carruthers, N.I.; Reichard, G.A.; Shih, N.-Y.; Lavey, B.J.; Alaimo, C.A.; Ting, P.C. (Schering Corp.); Substd. oximes as neurokinin antagonists. US 6063926 .
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) 27769 3,5-dichlorobenzoyl chloride 2905-62-6 C7H3Cl3O 详情 详情
(II) 10430 methyl 2-(methylamino)acetate; methyl N-methylglycinate 5473-12-1 C4H9NO2 详情 详情
(III) 44268 methyl 2-[(3,5-dichlorobenzoyl)(methyl)amino]acetate C11H11Cl2NO3 详情 详情
(IV) 30414 2-(3,4-dichlorophenyl)acetic acid;2-(3,4-Dichlorophenyl)acetic acid 5807-30-7 C8H6Cl2O2 详情 详情
(V) 44269 3,5-dichloro-N-[3-(3,4-dichlorophenyl)-2-oxopropyl]-N-methylbenzamide C17H13Cl4NO2 详情 详情
(VI) 12989 4-Bromo-2-methyl-2-butene; 1-Bromo-3-methyl-2-butene 870-63-3 C5H9Br 详情 详情
(VII) 44270 3,5-dichloro-N-[3-(3,4-dichlorophenyl)-6-methyl-2-oxo-5-heptenyl]-N-methylbenzamide C22H21Cl4NO2 详情 详情
(VIII) 44271 3,5-dichloro-N-[3-(3,4-dichlorophenyl)-2-(hydroxyimino)-6-methyl-5-heptenyl]-N-methylbenzamide C22H22Cl4N2O2 详情 详情
(IX) 61344 BOC-D-alpha-phenylglycine 33125-05-2 C13H17NO4 详情 详情
(X) 61345 3,5-dichloro-N-{(Z,6R)-2-[(1R)-1-(3,4-dichlorophenyl)-4-methyl-3-pentenyl]-8-hydroxy-10,10-dimethyl-5-oxo-6-phenyl-4,9-dioxa-3,7-diaza-2-undecen-1-yl}-N-methylbenzamide C35H39Cl4N3O5 详情 详情
(XI) 44273 3,5-dichloro-N-[(3R)-3-(3,4-dichlorophenyl)-2-(hydroxyimino)-6-methyl-5-heptenyl]-N-methylbenzamide C22H22Cl4N2O2 详情 详情
(XII) 61346 3,5-dichloro-N-((3R)-3-(3,4-dichlorophenyl)-2-{[(2,2-dimethylpropanoyl)oxy]imino}-6-methyl-5-heptenyl)-N-methylbenzamide C27H30Cl4N2O3 详情 详情
Extended Information