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    • 7. 发明授权
    • Compositions and process
    • 组成和过程
    • US3856943A
    • 1974-12-24
    • US42514873
    • 1973-12-17
    • UPJOHN CO
    • BIRKENMEYER R
    • C07H15/16A01N9/00
    • C07H15/16
    • THE ZWITTERION THEREOF OR THE HEMI-SALT THEREOF; R is alkyl of not more than 4 carbon atoms; and R1 is alkyl of not more than 8 carbon atoms in association with a pharmaceutical carrier. The compounds have clindamycin-like antibacterial activity and provide particularly high concentrations of compound in the urinary tract thereby being particularly useful in treating bacterial infections of the upper and lower urinary tract as well as L-forms in the kidney.
      OR THE ACID ADDITION SALTS THEREOF WHEREIN Halo is chlorine, bromine, or iodine, X is a member selected from the group consisting of hydrogen, an acyl radical of an aliphatic carboxylic acid having from 2 to 18 carbon atoms, inclusive,

      1''-( Beta -Hydroxyethyl)-1''-demethylclindamycin compounds of the formula:
    • 1' - (β-羟基乙基)-1'-去甲基克林霉素化合物,其结构如下:
    • 10. 发明授权
    • Derivatives of lincomycin
    • LINCOMYCIN的衍生物
    • US3737425A
    • 1973-06-05
    • US3737425D
    • 1970-04-06
    • UPJOHN CO
    • BANNISTER B
    • C07H15/14C07H15/16C08B19/00
    • C07H15/14C07H15/16
    • ALKYL A-THIOLINCOSAMINIDE IS REACTED WITH PERIODATE TO FORM ALKYL 1-THIO-A-D-GALACTOHEXODIALDO-1,5-PYRANOSIDE, WHICH IS REACTED WITH CYANIDE TO FORM ALKYL 6-CYANO-1-THIOA-D-GALACTOPYRANOSIDE. THE LATTER IS CONVERTED TO ANTIBACTERIALLY ACTIVE 8-NOR-LINECOMYCINS, FIRST THE 3,4-O-POSITIONS ARE COVERED BY AN YLIDENE GROUP. THIS CAN BE DONE INITIALLY BY DEACYLATING ALKYL N-ACETYL-3,4-O-YLIDENE-A-THIOLINOSOMINIDES. THE RESULTING ALKYL 3,4-O-YLIDENE-A-THIOLINCOSAMINIDE IS TREATED SUCCESSIVELY WITH PERIODATE AND CYANIDE. THE ALKYL 6-CYANO-3,4-O-YLIDENE-A-THIOLINCOSAMINIDE IS THEN TOSYLATED AND THE RESULTING 2,7-DI-O-TOSYL DERIVATIVES ARE REDUCED WITH LITHIUM ALUMINUM HYDRIDE TO FORM THE 6,7-AXIRIDINO DERIVATIVE WHICH ON N-ACYLATION AND SOLVOYLIS, DECAYLATION, AND REACYLATION WITH THE ACID MOIETY OF LINCOMYCIN OR AN ANALOG THEREOF, YIELDS THE DESIRED 7-NOR-LINCOMYCIN OR ANALOG THEREOF. WHEN THE SOLVOYLSIS IS AFFECTED WITH METHANOL OR OTHER ALKANOL, ANTIBACTERIALLY ACTIVE 7-O-ALKYL-8-NORLINCOMYCINS ARE OBTAINED.