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【结 构 式】

【分子编号】32983

【品名】methyl 3-[5-(4-[(5S)-5-[(acetamido)methyl]-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl)-1,3,4-thiadiazol-2-yl]propanoate

【CA登记号】

【 分 子 式 】C18H19FN4O5S

【 分 子 量 】422.4372232

【元素组成】C 51.18% H 4.53% F 4.5% N 13.26% O 18.94% S 7.59%

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)

Diazotization of the known aniline (I), followed by Sandmeyer reaction with CuCN and KCN afforded nitrile (II). Addition of hydrogen sulfide to (II) in the presence of Et3N in hot DMF led to the thioamide (III). Subsequent alkylation of (III) with methyl triflate gave the intermediate thioimidate (IV), and a further treatment of (IV) with hydrogen sulfide and pyridine provided dithioester (V). Displacement of the methylthio group of (V) by hydrazine yielded thiohydrazide (VI). This was cyclized to the required thiadiazole (VII) upon treatment with 3-carbomethoxypropionyl chloride (A) in refluxing THF. Aminolysis of the ester group of (VII) with methanolic ammonia at 100 C in a sealed vessel provided amide (VIII). This was finally dehydrated to the title nitrile using trifluoroacetic anhydride and pyridine.

1 Ford, C.W.; Gadwood, R.C.; Thomasco, L.M.; Weaver, E.A.Zurenko, G.E.; Synthesis and antibacterial activity of azolylphenyl oxazolidinones having 1,3,4-thiadiazolyl C-rings. 39th Intersci Conf Antimicrob Agents Chemother (Sept 26 1999, San Francisco) 1999, Abst F571.
2 Gadwood, R.C.; Thomasco, L.M.; Anderson, D.J. (Pharmacia Corp.); Thiadiazolyl and oxadiazolyl phenyl oxazolidinone antibacterial agents. EP 0994874; WO 9902525 .
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
27344 hydrazine 302-01-2 H4N2 详情 详情
(A) 18060 4-Chloro-4-oxobutyric acid methyl ester; 3-Carbomethosypropionyl chloride; Methyl 4-chloro-4-oxobutanoate 1490-25-1 C5H7ClO3 详情 详情
(I) 28504 N-[[(5S)-3-(4-amino-3-fluorophenyl)-2-oxo-1,3-oxazolidin-5-yl]methyl]acetamide C12H14FN3O3 详情 详情
(II) 28555 N-[[(5S)-3-(4-cyano-3-fluorophenyl)-2-oxo-1,3-oxazolidin-5-yl]methyl]acetamide C13H12FN3O3 详情 详情
(III) 28556 N-([(5S)-3-[4-(aminocarbothioyl)-3-fluorophenyl]-2-oxo-1,3-oxazolidin-5-yl]methyl)acetamide C13H14FN3O3S 详情 详情
(IV) 32980 methyl 4-[(5S)-5-[(acetamido)methyl]-2-oxo-1,3-oxazolidin-3-yl]-2-fluorobenzenecarbimidothioate C14H16FN3O3S 详情 详情
(V) 32981 methyl 4-[(5S)-5-[(acetamido)methyl]-2-oxo-1,3-oxazolidin-3-yl]-2-fluorobenzenecarbodithioate C14H15FN2O3S2 详情 详情
(VI) 32982 N-([(5S)-3-[3-fluoro-4-(hydrazinocarbothioyl)phenyl]-2-oxo-1,3-oxazolidin-5-yl]methyl)acetamide C13H15FN4O3S 详情 详情
(VII) 32983 methyl 3-[5-(4-[(5S)-5-[(acetamido)methyl]-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl)-1,3,4-thiadiazol-2-yl]propanoate C18H19FN4O5S 详情 详情
(VIII) 32984 3-[5-(4-[(5S)-5-[(acetamido)methyl]-2-oxo-1,3-oxazolidin-3-yl]-2-fluorophenyl)-1,3,4-thiadiazol-2-yl]propanamide C17H18FN5O4S 详情 详情
Extended Information