The present invention relates to synthetic routes to prepare a compound of the formula
wherein R
1
is halogen, C
1-6
halogenalkyl, C
1-6
alkoxy-C
1-6
alkyloxy or C
1-6
alkoxy-C
1-6
alkyl; R
2
is halogen, C
1-4
alkyl or C
1-4
alkoxy; R
3
and R
4
are independently branched C
3-6
alkyl; and R
5
is cycloalkyl, C
1-6
alkyl, C
1-6
hydroxyalkyl, C
1-6
alkoxy-C
1-6
alkyl, C
1-4
alkanoyloxy-C
1-6
alkyl, C
1-6
aminoalkyl, C
1-6
alkylamino-C
1-6
alkyl, C
1-6
dialkylamino-C
1-6
alkyl, C
1-6
alkanoylamino-C
1-6
alkyl, HO(O)C—C
1-6
alkyl, C
1-6
alkyl-O—(O)C—C
1-6
alkyl, H
2
N—C(O)—C
1-6
alkyl, C
1-6
alkyl-HN—C(O)—C
1-6
alkyl or (C
1-6
alkyl)
2
N—C(O)—C
1-6
alkyl; or a pharmaceutically acceptable salt thereof as well as key intermediates obtained when following these routes as well as their preparation.
本发明涉及合成路线,用于制备下式化合物:
其中,R1为卤素,C1-6卤代烷基,C1-6烷氧基-C1-6烷氧基或C1-6烷氧基-C1-6烷基;R2为卤素,C1-4烷基或C1-4烷氧基;R3和R4分别为支链C3-6烷基;R5为环烷基,C1-6烷基,C1-6羟基烷基,C1-6烷氧基-C1-6烷基,C1-4酰氧基-C1-6烷基,C1-6
氨基烷基,C1-6烷基
氨基-C1-6烷基,C1-6二烷基
氨基-C1-6烷基,C1-6酰
氨基烷基,HO(O)C—C1-6烷基,C1-6烷基-O—(O)C—C1-6烷基,
H2N—C(O)—C1-6烷基,C1-6烷基-HN—C(O)—C1-6烷基或(C1-6烷基)2N—C(O)—C1-6烷基;以及其药学上可接受的盐,以及在遵循这些路线时获得的关键中间体以及它们的制备方法。