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【结 构 式】

【药物名称】Tigemonam, SQ-30213

【化学名称】3beta(S)-[2-(2-Aminothiazol-4-yl)-2(Z)-(carboxymethoxyimino)acetamido]-1-hydroxy-2,2-dimethylazetidin-4-one hydrogen sulfate ester
      [[[(Z)-(2-Amino-4-thiazolyl)[[(3S)-1-hydroxy-2,2-dimethyl-4-oxo-3-azetidinyl]carbamoyl]methylene]amino]oxy]acetic acid hydrogen sulfate ester
      [S-(Z)]-[[[1-(2-Amino-4-thiazolyl)-2-[[2,2-dimethyl-4-oxo-1-sulfooxy)-3-azetidinyl]amino]-2-oxoethylidene]amino]oxy]acetic acid
      3beta(S)-[2-(2-Aminothiazol-4-yl)-2(Z)-(carboxymethoxyimino)acetamido]-2,2-dimethyl-4-oxo-1-azetidinesulfonic acid

【CA登记号】102507-71-1, 102916-21-2 (dicholine salt)

【 分 子 式 】C12H15N5O9S2

【 分 子 量 】437.40945

【开发单位】Bristol-Myers Squibb (Originator)

【药理作用】Monobactams

合成路线1

The reaction of N-(tert-butoxycarbonyl)-3-hydroxyvaline (I) with O-benzylhydroxylamine (II) by means of hydroxybenzotriazole (HBT) and dicyclohexylcarbodiimide (DCC) in THF gives the corresponding benzyloxyamide (III), which is treated with the pyridine.SO3 complex (IV) in pyridine to yield N-(tert-butoxycarbonyl)-3-(sulfooxy)-N2-(benzyloxy)valinamide (V). The cyclization of (V) by means of K2CO3 in ethyl acetate - water affords 1-(benzyloxy)-3-(tert-butoxycarbonylamino)-4,4-dimethylazetidin-2-one (VI), which is debenzylated by hydrogenation with H2 over Pd/C in methanol to give the N-hydroxyazetidine (VII). The reaction of (VII) with the sulfonating complex (IV) affords the 1-azetidinyl sulfuric ester (VIII), which is deprotected by reaction with trifluoroacetic acid in anisole - dichloromethane yielding 3-amino-4,4-dimethyl-2-oxoazetidinyl-1-sulfate (IX). The condensation of (IX) with 2-(2-aminothiazol-4-yl)-2(Z)-(diphenylmethoxycarbonylmethoxyimino)acetic acid (X) by means of diphenyl chlorophosphate (PCP) and triethylamine in DMF gives the diphenylmethyl ester (XI) of the final product, which is finally deprotected by hydrolysis with trifluoroacetic acid and anisole.

1 Slusarchyk, W.A.; Dejneka, T.; Kostes, W.H. (Bristol-Myers Squibb Co.); Preparation of 4,4-dialkyl-2-azetidinones. AU 8652460; BE 090411; DE 3602347; ES 8706112; ES 8800897; FR 2576596; GB 2170201; US 4638061 .
2 Gurney, J.D.; Prous, J.; Castaner, J.; TIGEMONAM < Rec INN >. Drugs Fut 1989, 14, 10, 966.
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) 21366 (2S)-2-[(tert-butoxycarbonyl)amino]-3-hydroxy-3-methylbutyric acid C10H19NO5 详情 详情
(II) 14640 O-benzylhydroxylamine; 1-[(aminooxy)methyl]benzene 622-33-3 C7H9NO 详情 详情
(III) 21368 tert-butyl (1S)-1-[[(benzyloxy)amino]carbonyl]-2-hydroxy-2-methylpropylcarbamate C17H26N2O5 详情 详情
(V) 21369 (5S)-9,9-dimethyl-5-[1-methyl-1-(sulfoperoxy)ethyl]-4,7-dioxo-1-phenyl-2,8-dioxa-3,6-diazadecane C17H26N2O9S 详情 详情
(VI) 21370 tert-butyl (3S)-1-(benzyloxy)-2,2-dimethyl-4-oxoazetidinylcarbamate C17H24N2O4 详情 详情
(VII) 21371 tert-butyl (3S)-1-hydroxy-2,2-dimethyl-4-oxoazetidinylcarbamate C10H18N2O4 详情 详情
(VIII) 21372 tert-butyl (3S)-2,2-dimethyl-4-oxo-1-(sulfoperoxy)azetidinylcarbamate C10H18N2O8S 详情 详情
(IX) 21373 (3S)-3-amino-4,4-dimethyl-1-(sulfoperoxy)-2-azetidinone C5H10N2O6S 详情 详情
(X) 21374 2-(2-amino-1,3-thiazol-4-yl)-2-[[2-(benzhydryloxy)-2-oxoethoxy]imino]acetic acid C20H17N3O5S 详情 详情
(XI) 21375 benzhydryl 2-[[((Z)-1-(2-amino-1,3-thiazol-4-yl)-2-[[(3S)-2,2-dimethyl-4-oxo-1-(sulfoperoxy)azetidinyl]amino]-2-oxoethylidene)amino]oxy]acetate C25H25N5O10S2 详情 详情
Extended Information