![]() Method of obtaining substituted 7-amino-3-oxy-1-carba (1-dethia)-3-cephem-4-carboxylate in form of c
专利摘要:
7 beta -Acylamino-3-trifluoromethylsulfonyloxy-1-carba-3-cephem-4-carbo ylic acid antibiotic compounds, esters and salts thereof, and the corresponding 7-amino and protected 7-amino 1-carbacephalosporins are provided. The 3-trifluoromethylsulfonyloxy-substituted 1-carbacephalosporins also are useful in a process for preparing 3-halo-1-carbacephalosporins which comprises displacing the 3-trifluoromethylsulfonyloxy ester group with halide ion in an aprotic polar solvent. 公开号:SU1579460A3 申请号:SU874202676 申请日:1987-06-05 公开日:1990-07-15 发明作者:Алберт Эванс Дэвид;Брайан Съерген Эрик 申请人:Президент Энд Феллоуз Оф Гарвард Калледж (Фирма); IPC主号:
专利说明:
This invention relates to the preparation of new substituted 7-amino-3-hydroxy-1-carba (1-child) -3-cephem-4-carboxylate of the general formula RiCONH., COOR where R4 C (-C43alkoxy or phenoxymethyl; RZ-tert.butyl- or p-nitrobenzyl group, in the form of cis-enantomer, which can be used as intermediates in the synthesis of AND-lactam antibiotics. R The aim of the invention is to develop a method for producing new compounds, the use of which as an intermediate in products allows to significantly simplify the synthesis of lactam antibiotics. Pr im. Rubs GVTHTT- / 3-ter. Butyloxycarbonylamino-3-hydroxy-1-carba () -3-cephem-4-carboxylate. To a solution of 4.4 g (9.47 mmol) of 1- -tert-butyloxycarbonyl-methyl-3 | 3- -t-butyloxycarbonylamino-43- (2- -phenyl iocarbonylethyl) azetidin-2-one in 100-br dry tetrahydrofuran 29.3 ml (3.12 mmol) was added to aTMorr iepe argogg at -78 ° C 4j s 31 lasanliti. After about 15 min, the mixture was drunk in 750 ml of an aqueous solution of ammonium chloride (50% of saturation) and the pH of the mixture was set to 3 with 1 n. hydrochloric acid The acidified mixture was extracted three times with 50 ml portions of methylene chloride. The combined extracts were washed with brine, dried over sodium sulfate, and concentrated by evaporation. Concentrates exposed galy chromatography on dioxide cream. nor using as a eluent a mixture of hexane and ethyl acetate in a volume ratio of 1: 1. The eluate was evaporated to dryness, resulting in a target compound. Calculated,%: C 57.61; H 7.39; N 7.90. CnHe6N4Oe Found,%: N 7.69. Mass spectrum: IR and lactamcarbonyl: 1768. Similarly, p-nitrobenzyl ester of 7-phenoxy-acetylamino-3-β-hydroxy-1-carba (child) -3-cephem-4-carboxylic acid was obtained. Calculated,%: C 59.10; H 4.53; N 8.99. C 57.42; H 7.18; M4 354. Sgeang, S, 08 Found,%: C 59.10; N 8.96. H 4.47; 579460 Mass spectrum (desorption by field): M-1 467. UV spectrum: max 275 nm; b 17.034; , c269 nm; 6 IR spectrum: A-lactamcarbonyl: 1766 cmH
权利要求:
Claims (1) [1] Invention Formula The method of obtaining substituted 7-amino-3-hydroxy-1-carba (1-child) -3-cephem-4-carboxylate of the general formula R, CONHv SOOVg where R (- C (-C-alkoxy or phenoxymethyl; R is a t-butyl and p-nitrobenzyl group, in the form of a cis-en-antiomer, characterized in that the compound of the general formula RiCONH. " CH2CH2COS- (Q CH2-COORa | where R {and Kg. have the indicated values "- 1 neither, subjected to interaction with hexamethyldisilazhenieMo Editor A. Dolinich Compiled by I. Bocharova Tehred L. Oliynyk Proofreader M. Samborska Order 1925 Circulation 317 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Subscription
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同族专利:
公开号 | 公开日 HUT41786A|1987-05-28| PT82989B|1989-01-30| IE861900L|1987-01-17| KR870001193A|1987-03-12| DK173456B1|2000-11-27| EP0209352B1|1991-05-02| HU906465D0|1991-04-29| AR243186A1|1993-07-30| US4665171A|1987-05-12| CN86104783A|1987-02-04| JPS6242985A|1987-02-24| AU619938B2|1992-02-06| DK335686D0|1986-07-15| ES2000516A6|1988-03-01| JPH0762015B2|1995-07-05| JP2634775B2|1997-07-30| AT63118T|1991-05-15| RU1794079C|1993-02-07| NZ216871A|1989-10-27| KR900005257B1|1990-07-21| EP0209352A2|1987-01-21| AU4793490A|1990-05-10| CN1015178B|1991-12-25| DK16096A|1996-02-15| AU6016686A|1987-01-22| ZA865274B|1988-02-24| EP0362902A3|1990-08-01| DK335686A|1987-02-25| IL79420A|1992-01-15| AU595216B2|1990-03-29| DE3650474T2|1996-06-13| AT133172T|1996-02-15| DE3650474D1|1996-02-29| IE58997B1|1993-12-15| EP0209352A3|1988-04-20| HK1007140A1|1999-04-01| HU201931B|1991-01-28| PT82989A|1986-08-01| GR861857B|1986-11-18| DE3679002D1|1991-06-06| ES2005752A6|1989-03-16| CA1310323C|1992-11-17| EP0362902A2|1990-04-11| EP0362902B1|1996-01-17| JPH07300476A|1995-11-14|
引用文献:
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申请号 | 申请日 | 专利标题 US06/755,982|US4665171A|1985-07-17|1985-07-17|Process and intermediates for β-lactam antibiotics| 相关专利
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