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    • 7. 发明授权
    • Purines useful for the potentiation of antibiotics
    • 用于增强抗生素的嘌呤
    • US4180576A
    • 1979-12-25
    • US828875
    • 1977-08-29
    • Geoffrey W. GriggDesmond J. Brown
    • Geoffrey W. GriggDesmond J. Brown
    • C07D473/36A61K31/505A61K31/52
    • C07D473/36Y10S514/804
    • Purines useful for the potentiation of antibiotics, particularly phleomycin and bleomycin, have the general formula: ##STR1## wherein W is selected from the group consisting of --SRCONR.sup.1 R.sup.2, --SRCN, and --SRCOR.sup.1, in which R is a --(CH.sub.2).sub.n -- group (n is an integer of 1 to 5) which may bear one or more side chain alkyl groups each having from 1 to 5 carbon atoms, and R.sup.1 and R.sup.2, which may be the same or different, are selected from hydrogen atoms and straight or branched chain alkyl groups having from 1 to 5 carbon atoms, or alternatively, R.sup.1 and R.sup.2 together comprise a polymethylene, oxapolymethylene or thiapolymethylene chain containing from 4 to 10 carbon atoms;R.sup.3, R.sup.4, R.sup.5 and R.sup.6, which may be the same or different, are selected from hydrogen atoms and straight or branched chain alkyl groups having from 1 to 5 carbon atoms; and R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 may be substituted by one or more non-toxic substituents.
    • 用于增强抗生素,特别是腐草霉素和博来霉素的嘌呤具有以下通式:其中W选自-SRCONR1R2,-SRCN和-SRCOR1,其中R是 可以具有一个或多个各自具有1至5个碳原子的侧链烷基,和可以相同或不同的R 1和R 2的 - (CH 2)n - 基(n为1至5的整数) 选自氢原子和具有1至5个碳原子的直链或支链烷基,或者,R 1和R 2一起包含含有4至10个碳原子的聚亚甲​​基,氧化聚亚甲基或硫代聚亚甲基; R 3,R 4,R 5和R 6可以相同或不同,选自氢原子和具有1至5个碳原子的直链或支链烷基; 并且R,R 1,R 2,R 3,R 4,R 5和R 6可以被一个或多个无毒取代基取代。