CAS: 65085-01-0; (6R,7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-(Methoxyimino)Acetamido)-3-(((1-Methyl-1H-Tetrazol-5-yl)Thio)Methyl)-8-Oxo-5-Thia-1-Azabicyclo[4.2.0]Oct-2-Ene-2-Carboxylic Acid

上下游产品

CAS号24209-38-9 头孢甲肟中间体

(6R,7R)-7-[[(2Z)-2-(2-Formamido-1,3-Thiazol-4-yl)-2-Methoxyiminoacetyl]Amino]-3-[(1-Methyltetrazol-5-yl)Sulfanylmethyl]-8-Oxo-5-Thia-1-Azabicyclo[4.2.0]oct-2-Ene-2-Carboxylic Acid 反应生成 头孢甲肟
参考文献:Yamada,Hirotada;Ueda,Shinji;Mutoh,Masayuki;Nagata,Hideo;Nouda,Hirosh+,J. Antibiotics.,43,(1990) N,C. 578-583
标题:Yamada,Hirotada;Ueda,Shinji;Mutoh,Masayuki;Nagata,Hideo;Nouda,Hirosh+,J. Antibiotics.,43,(1990) N,C. 578-583

专利信息

专利号:US-8017776-B2
优先权日:2003-07-15
标题 :Methods for synthesis of acyloxyalkyl compounds
发明人：BHAT LAXMINARAYAN; GALLOP MARK A
权利人:XENOPORT INC
摘要:Disclosed herein are methods for synthesizing 1-(acyloxy)-alkyl prodrug derivatives of drugs through oxidation of 1-acyl-alkyl derivatives of drugs under anhydrous reaction conditions. The methods typically proceed stereospecifically, in high yield, do not require the use of activated intermediates and/or toxic compounds and are readily amenable to scale-up.

专利号:US-8143437-B2
优先权日:2002-02-19
标题:Methods for synthesis of prodrugs from 1-acyl-alkyl derivatives and compositions thereof
发明人：GALLOP MARK A; XIANG JIA-NING; YAO FENMEI; BHAT LAXMINARAYAN; ZHOU CINDY X
权利人:GALLOP MARK A; XIANG JIA-NING; YAO FENMEI; BHAT LAXMINARAYAN; ZHOU CINDY X; XENOPORT INC
摘要:The present invention provides a method for synthesizing 1-(acyloxy)-alkyl derivatives from 1-acyl-alkyl derivatives, which typically proceeds stereospecifically, in high yield, does not require the use of activated intermediates and/or toxic compounds and is readily amendable to scale-up. The current invention also provides 1-acyl-alkyl derivatives of known drug components and methods for synthesizing these 1-acyl-alkyl derivatives.

专利号:US-4927964-A
优先权日:1988-01-18
标 题:Method for production of 2-oxyimino-3-oxobutyric acids
发明人：NAITO KENZO; ISHIBASHI YUKIO; SHINBO HARUO
权利人:TAKEDA CHEMICAL INDUSTRIES LTD
摘要:An advantageous method of producing in large amounts on a commercial scale 2-substituted oxyimino-3-oxobutyric acids, which are useful as intermediates in the synthesis of e.g. aminothiazole cephalosporins, is characterized by reacting a tert-butyl 2-substituted oxyimino-3-oxobutyrate with a hydrogen halide in an anhydrous organic solvent.

专利号:US-7452990-B2
优先权日:2002-12-26
标题 :Intermediates for synthesis of cephalosporins and process for preparation of such intermediates
发明人：DATTA DEBASHISH; DANTU MURALIKRISHNA; MISHRA BRIJKISHORE; SHARMA POLLEPEDDI LAKSHMI NARAYANA
权利人:LUPIN LTD
摘要:A novel 4-halo-2-oxyimino-3-oxo butyric acid-N,N-dimethyl formiminium chloride chlorosulfate of formula (I) useful in the preparation of cephalosporin antibiotics n nwhereinn n X is chlorine or bromine; R is hydrogen, C 1-4 alkyl group, an easily removable hydroxyl protective group, —CH 2 COOR 5 , or —C(CH 3 ) 2 COOR 5 , wherein R 5 is hydrogen or an easily hydrolysable ester group. The compound of formula (I) is prepared by reacting 4-halo-2-oxyimino-3-oxobutyric acid of formula (IV 1 ), n nwherein X, R and R 5 are as defined above, with N,N-dimethylformiminium chloride chlorosulphate of formula (VII)n n nin an organic solvent at a temperature ranging from −30° C. to −15° C. The cephalosporins that may be prepared from the intermediate include cefdinir, cefditoren pivoxil, cefepime, cefetamet pivoxil, cefixime, cefmenoxime, cefodizime, cefoselis, cefotaxime, cefpirome, cefpodoxime proxetil, cefquinome, ceftazidime, cefteram pivoxil, ceftiofur, ceftizoxime, ceftriaxone and cefuzonam.

专利号:US-9006421-B2
优先权日:2013-03-14
标题 :Cephalosporin compositions and methods of manufacture
发明人：LAI JAN-JI; PATHARE PRADIP M; KOLLA LAXMA; SORET ADRIEN F
权利人:CUBIST PHARM INC
摘要:Provided herein is a method for the synthesis of cephalosporin antibiotic compounds comprising the conversion of a protected 7-amino group into a 7-carboxamide moiety in a single step.

专利号:US-2006135761-A1
优先权日:2002-12-26
标 题 :Novel intermediates for synthesis of cephalosporins and process for preparation of such intermediates