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【结 构 式】

【分子编号】43215

【品名】ethyl (E)-3-(cyclopropylamino)-3-(methylsulfanyl)-2-(2,4,5-trifluorobenzoyl)-2-propenoate

【CA登记号】

【 分 子 式 】C16H16F3NO3S

【 分 子 量 】359.3691896

【元素组成】C 53.48% H 4.49% F 15.86% N 3.9% O 13.36% S 8.92%

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:(IVb)

The condensation of 2-(2,4,5-trifluorobenzoyl)acetic acid ethyl ester (I) with cyclopropyl isothiocyanate (II) by means of NaH in DMF gives the sodium salt (IIIa-b), which is methylated with methyl iodide to afford the methylsulfanyl derivative (IVa-b). The cyclization of (IVa-b) by means of NaH in THF provides the methylsulfanyl quinolone (V), which is oxidized with MCPBA to the corresponding methylsulfinyl compound (VI). The reaction of (VI) with NaSH in THF furnishes 1-cyclopropyl-6,7-difluoro-4-oxo-2-sulfanyl-1,4-dihydroquinoline-3-carboxylic acid ethyl ester (VII), which is cyclized with hydroxylamine-O-sulfonic acid and NaHCO3 through the intermediate (VIII), affording the isothiazoloquinoline (IX). Finally, this compound is condensed with piperazine (X) in pyridine to give the target compound.

1 Chu, D.T.W.; Isothiazoloquinolones: Antibacterial and antineoplastic agents. Drugs Fut 1992, 17, 12, 1101.
2 Aquilar-Bryan, L.; Bryan, J.; Boyd, A.E. III; et al.; Sulfonylurea signal transduction. Recent Prog Horm Res 1991, 47, 299-317.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(IIIa) 43212 sodium (Z)-1-(cyclopropylamino)-3-ethoxy-3-oxo-2-(2,4,5-trifluorobenzoyl)-1-propene-1-thiolate C15H13F3NNaO3S 详情 详情
(IIIb) 43213 sodium (E)-1-(cyclopropylamino)-3-ethoxy-3-oxo-2-(2,4,5-trifluorobenzoyl)-1-propene-1-thiolate C15H13F3NNaO3S 详情 详情
(IVa) 43214 ethyl (Z)-3-(cyclopropylamino)-3-(methylsulfanyl)-2-(2,4,5-trifluorobenzoyl)-2-propenoate C16H16F3NO3S 详情 详情
(IVb) 43215 ethyl (E)-3-(cyclopropylamino)-3-(methylsulfanyl)-2-(2,4,5-trifluorobenzoyl)-2-propenoate C16H16F3NO3S 详情 详情
(I) 22096 ethyl 3-(2,4-dichloro-5-fluorophenyl)-3-oxopropanoate C11H9Cl2FO3 详情 详情
(II) 43211 1-isothiocyanatocyclopropane; cyclopropyl isothiocyanate 56601-42-4 C4H5NS 详情 详情
(V) 43216 ethyl 1-cyclopropyl-6,7-difluoro-2-(methylsulfanyl)-4-oxo-1,4-dihydro-3-quinolinecarboxylate C16H15F2NO3S 详情 详情
(VI) 43217 ethyl 1-cyclopropyl-6,7-difluoro-2-(methylsulfinyl)-4-oxo-1,4-dihydro-3-quinolinecarboxylate C16H15F2NO4S 详情 详情
(VII) 43218 ethyl 1-cyclopropyl-6,7-difluoro-4-oxo-2-sulfanyl-1,4-dihydro-3-quinolinecarboxylate C15H13F2NO3S 详情 详情
(VIII) 43219 ethyl 2-(aminosulfanyl)-1-cyclopropyl-6,7-difluoro-4-oxo-1,4-dihydro-3-quinolinecarboxylate C15H14F2N2O3S 详情 详情
(IX) 43220 9-cyclopropyl-6,7-difluoroisothiazolo[5,4-b]quinoline-3,4(2H,9H)-dione C13H8F2N2O2S 详情 详情
(X) 10355 Diethylenediamine; Piperazine 110-85-0 C4H10N2 详情 详情
Extended Information