WHERE R IS SELECTED FROM THE ROUP CONSISTING OF LOWERALKYL, LOWERALKENYL, ARYL, SUBSTITUTED ARYL, BENZYL, SUBSTITUTED BENZYL, AROXYALKYL, AND SUBSTITUTED AROXYALKYL; R1 IS HYDROGEN OR METHYL; R2 IS HYDROGEN OR LOWERAKNANOYL AND R3 IS HYDROGEN OR HYDROXYL SAID ERYTHROMYCIN DERIVATIVES BEING USEFUL FOR THIER ANTIBIOTIC ACTIVITY.
Abstract:
Covers 4''''-O-sulfonyl erythromycin-9-O-oxime derivatives falling within the following structural formula: WHERE R is selected from the group consisting of loweralkyl, loweralkenyl, aryl, substituted aryl, benzyl and substituted benzyl, R1 is hydrogen or methyl, R2 is hydrogen or loweralkanoyl, R3 is hydrogen or hydroxyl, and R4 is selected from the group consisting of loweralkyl, cycloalkyl, substituted cycloalkyl, aryl, substituted aryl, benzyl and substituted benzyl. These 9-O-oxime derivative compounds are useful as antibiotics.
Abstract:
1. AN ERYTHROMYCIN DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF 8-EPI-10,11-ANHYDROETHYTHROMYCN B, 8-EPI11, 12-EPOXYERYTHROMYCIN A 6,9-HEMIACETAL, 8-EPI-ERYTHROMYCIN B AND 8-EPI-10,11-ANHYDROERYTHROMYCIN A.
Abstract:
1463850 4 11 -Dioxy-4-oxo-erythromycin B derivatives ABBOTT LABORATORIES 19 June 1974 [21 June 1973] 27249/74 Heading C2C Novel compounds I and II in which R 5 is CH(R 7 )-SR 8 (where R 7 is hydrogen or C 1-6 alkyl and R 8 is C 1-6 alkyl) and R 6 is hydrogen or C 2-6 alkanoyl provided that when R 6 is hydrogen then R 5 is also hydrogen are prepared by reacting erythromycin B with a di-C 1-6 alkyl-sulphoxide and C 2-6 alkanoic acid anhydride to form a compound I (R 5 = CH(R 7 )-SR 8 and R 6 = C 2-6 alkanoyl) which is hydrolysed with an alkali metal bicarbonate to form a compound I (R 5 =CH(R 7 )-SR 8 and R 6 = hydrogen) which in the presence of HgO/ HgCl 2 forms a compound II which is hydrolysed by dil. HCl to compound I (R 5 = R 6 = hydrogen). Compound I (R 5 =R 6 =hydrogen) is also prepared by treating compound II with chloramine T.