The invention relates to a thiadiazole derivative of the formula I:
in which Y is O, S, CH2, SO or a direct bond; m is 0 to 4 and n is 1 to 4 provided that when Y is S, O or SO m is 1 to 4, and when Y is 0 or SO n is 2 to 4; R1 is H or (C1-10)alkyl; A is 3,4-dioxocyclobuten-1,2-diyl or C=Z in which Z is O, S, NCN, NN02, CHNO2, NCONH2, C(CN)2, NCOR2, NCO2R2, NSO2R2 or NR3 in which R2 is (C1-6)alkyl or (C6-12)aryl and R3 is H or (C1-6)alkyl; B is (C1-6)alkoxy, (C1-6)aikylthio or NR4R5 in which R4 and R5 are independently H, (C1-10)alkyl, C3-6(alkenyl), (C3-6)-alkynyl, (C2-6) (primary hydroxy)alkyl, (C2-6) (primary amino)alkyl or (C3-6)cycloalkyl or R4 and R5 are joined to form a 5- or 6- membered saturated ring optionally containing an additional O or NH: and the salts thereof.
本发明涉及一种式 I 的
噻二唑衍
生物:
其中 Y 是 O、S、
CH2、SO 或直接键;m 是 0 至 4,n 是 1 至 4,条件是当 Y 是 S、O 或 SO 时 m 是 1 至 4,当 Y 是 0 或 SO 时 n 是 2 至 4;R1 是 H 或 (C1-10)烷基;A 是 3,4-二氧代
环丁烯-1,2-二基或 C=Z 其中 Z 是 O、S、NCN、NN02、
CHNO2、NCONH2、C(CN)2、NCOR2、NCO2R2、NSO2R2 或 NR3 其中 R2 是(C1-6)烷基或(C6-12)芳基,R3 是 H 或(C1-6)烷基;B为(C1-6)烷氧基、(C1-6)烷
硫基或 NR4R5,其中 R4 和 R5 独立地为 H、(C1-10)烷基、C3-6(烯基)、(C3-6)-炔基、(C2-6)(伯羟基)烷基、(C2-6)(伯
氨基)烷基或(C3-6)环烷基,或 R4 和 R5 连接形成可选含有额外 O 或 NH 的 5 或 6 位饱和环:及其盐类。