The present invention relates to novel benzo[1,2,5]oxadiazoles and benzo[1,2,5]thiadiazoles of formula (I) wherein X is O or S, R1 is 5-(2-fluoro-ethylamino)-thiazol-2-yl, 5-(2-18F-ethylamino)- thiazol-2-yl or a group of formula (a) wherein Y is CH or N, R2 is NHCH3, NH11CH3, N(CH3)11CH3, N(CH3)2, N(11CH3)2, NH(CH2)nF, NH(CH2)n18F, N(CH3)(CH2)nF, N(CH3)-(CH2)n 18F, O-(CH2)nF, O-(CH2)n 18F, CONH(CH2)nF or CONH(CH2)n18F (n being in each case 2 to 4) and R3 is hydroxy, (C1-4)alkoxy, hydrogen or nitro, in free base or acid addition salt form; their preparation, their use as markers in diagnosis and compositions containing them.
                            本发明涉及新型苯并[1,2,5]噁二唑和苯并[1,2,5]
噻二唑,其
化学式为(I),其中X为O或S,R1为5-(2-
氟乙基
氨基)-
噻唑-2-基、5-(2-18F-乙基
氨基)-
噻唑-2-基或具有
化学式(a)的基团,其中Y为CH或N,R2为NH   、NH11   、N(
CH3)11   、N(   )2、N(11   )2、NH(
CH2)nF、NH(   )n18F、N(   )(   )nF、N(   )-(   )n 18F、O-(   )nF、O-(   )n 18F、CONH(   )nF或CONH(   )n18F(其中n分别为2至4),R3为羟基、(C1-4)烷氧基、氢或硝基,以游离碱或盐酸盐的形式存在;其制备方法,作为诊断标记物的用途以及含有它们的组合物。