Triazolo[4,5-d]pyrimidine derivatives of formula (I) for use in prognosis and/or diagnosis of bacterial infection in a host mammal and method of imaging thereof. Formula (I) wherein R1 is C3-5 alkyl optionally substituted by one or more halogen atoms; R2 is a phenyl group, optionally substituted by one or more halogen atoms; R3 and R4 are each hydroxyl; R is XOH, wherein X is CH2, OCH2CH2, or a bond; or a pharmaceutical acceptable salt or solvate thereof, or a solvate of such a salt provided that when X is CH2 or a bond, R1 is not propyl; when X is CH2 and R1 CH2CH2CF3, butyl or pentyl, the phenyl group at R2 must be substituted by fluorine; when X is OCH2CH2 and R1 is propyl, the phenyl group at R2 must be substituted by fluorine.
Triazolo[4,5-d]
嘧啶衍
生物的
化学式(I),用于预后和/或诊断宿主哺乳动物的细菌感染,以及其成像方法。
化学式(I)中,R1是C3-5烷基,可以选择地被一个或多个卤素原子取代;R2是苯基,可以选择地被一个或多个卤素原子取代;R3和R4分别是羟基;R是XOH,其中X是
CH2、O 或键;或其药用可接受的盐或溶剂,或这种盐的溶剂,但当X是 或键时,R1不是丙基;当X是 且R1是 CF3、丁基或戊基时,R2处的苯基必须被
氟取代;当X是O 且R1是丙基时,R2处的苯基必须被
氟取代。