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, R
1
is 5-(2-fluoro-ethylamino)-thiazol-2-yl, 5-(2-
18
F-ethylamino)-thiazol-2-yl or a group of formula (a) wherein Y is CH or N, R
2
is NHCH
3
, NH
11
CH
3
, N(CH
3
)
11
CH
3
, N(CH
3
)
2
, N(
11
CH
3
)
2
, NH(CH
2
)
n
F, NH(CH
2
)
n
18
F, N(CH
3
)(CH
2
)
n
F, N(CH
3
)—(CH
2
)
n
18
F, O—(CH
2
)
n
F, O—(CH
2
)
n
18
F, CONH(CH
2
)nF or CONH(CH
2
)
n
18
F (n being in each case 2 to 4) and R
3
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.
本发明涉及一种新型苯并[1,2,5]噁二唑和苯并[1,2,5]
噻二唑的化合物,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-基或式(a)中的基团,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( )-( )n18F、O-( )nF、O-( )n18F、CONH( )nF或CONH( )n18F(其中n在每种情况下均为2至4),R3为羟基、(C1-4)烷氧基、氢或硝基,以自由碱或酸盐的形式存在;本发明还涉及它们的制备、它们在诊断中的标记用途以及含有它们的组合物。