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    • 12. 发明申请
    • Process for the preparation of beta-lactam derivatives
    • 制备β-内酰胺衍生物的方法
    • US20030004336A1
    • 2003-01-02
    • US10225229
    • 2002-08-22
    • Antibioticos S.p.A.
    • Enrico SivieroWalter CabriDaniele Mario Terrassan
    • C07D501/14
    • C12P35/02C07D501/00
    • A process for the preparation of Cefuroxime acid (1), which comprises the following steps: (1) Extraction of deacetyl 7-glutaryl ACA (II) aqueous solution at acid pH with organic solvents (for example according to the procedures disclosed in U.S. Pat. No. 5,801,241); (2) drying the resulting solution while preventing lactonization of the intermediate; (3) carbamoylation of the hydroxymethyl group at the 3-position by reaction with chlorosulfonyl isocyanate or similar products; (7) extraction of the carbamoyl derivative from step 3 with water at neutral pH; (8) enzymatic hydrolysis of the amide at the 7-position of the cephalosporanic ring with glutaryl acylase; (6) acylation of the amino group by condensation with 2-furanyl(sin-methoxyimino)acetic acid chloride or mixed anhydride.
    • 一种制备头孢呋辛酸(1)的方法,其包括以下步骤:(1)在酸性pH下用有机溶剂萃取脱乙酰基-7-戊二酰基ACA(II)水溶液(例如根据US Pat 。5,801,241号); (2)干燥所得溶液同时防止中间体的内酯化; (3)通过与氯磺酰基异氰酸酯或类似产物的反应在3-位羟基甲基的氨基甲酰基化; (7)在中性pH下用水萃取步骤3的氨基甲酰基衍生物; (8)用戊二酰基酰化酶在头孢菌素环的7-位酶水解酰胺; (6)通过与2-呋喃基(正 - 甲氧基亚氨基)乙酰氯或混合酸酐缩合而氨基的酰化。
    • 13. 发明申请
    • PROCESS FOR THE PREPARATION OF CEPHALOSPORINS INTERMEDIATES
    • 制备中草药的方法
    • WO1993002085A1
    • 1993-02-04
    • PCT/EP1992001595
    • 1992-07-14
    • ANTIBIOTICOS S.P.A.SOGLI, LorisTERRASSAN, DanieleRIBALDONE, Giuseppe
    • ANTIBIOTICOS S.P.A.
    • C07D501/18
    • C07D501/00Y02P20/55
    • The present invention relates to a process for preparing a compound of formula (I), wherein R is an heterocyclic group which contains at least one nitrogen atom with or without oxygen or sulphur and R and R are both hydrogen atoms or one of them is an hydrogen atom and the other is an acyl group; the process comprising reacting a compound of formula (II), wherein R and R are each as defined above, and wherein, if necessary, any reactive group is protected by a suitable protective group, or a salt thereof, with a compound of the formula (III): R-SH, wherein R is as defined above, or a salt thereof, in the presence of an acid and of a compound of formula (IV), wherein each of R and R is a C1-C4 alkyl group of R and R taken together are a C2 or C3 alkylene chain and, if necessary, removing the protective groups possibly present. The compounds of formula (I) are useful intermediates in the synthesis of Cefazolin and Cefazedone.
    • 本发明涉及一种制备式(I)化合物的方法,其中R是含有或不含氧或硫的至少一个氮原子的杂环基,R 1和R 2均为氢原子 或其中一个为氢原子,另一个为酰基; 该方法包括使式(II)化合物(其中R 1和R 2各自如上所定义)反应,并且其中如果需要,任何反应性基团被合适的保护基或其盐保护, 与式(Ⅳ)的化合物反应:其中R如上所定义,R-SH或其盐在酸和式(Ⅳ)化合物的存在下反应,其中R 3和 R 4是R 3的C 1 -C 4烷基,R 4一起是C 2或C 3亚烷基链,如果需要,除去可能存在的保护基。 式(I)化合物是合成头孢唑啉和头孢唑酮的有用中间体。