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5-chloro-3-(2-ethoxypyridin-3-yl)-6-fluoro-3-hydroxy-1,3-dihydroindol-2-one

3-hydroxy-1,3-dihydroindol-2-one

2,4-dimethoxyphenylsulfonyl chloride

sulfonyl chloride

→

3-Amino-5-chloro-1-(2,4-dimethoxyphenylsulfonyl)-3-(2-ethoxypyridin-3-yl)-6-fluoro-1,3-dihydroindol-2-one

5-Chloro-3-(2-ethoxypyridin-3-yl)-6-fluoro-3-hydroxy-1,3-dihydroindol-2-one

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실험 절차

3-Amino-5-chloro-1-(2,4-dimethoxyphenylsulfonyl)-3-(2-ethoxypyridin-3-yl)-6-fluoro-1,3-dihydroindol-2-one was prepared in analogy to example 1.1 to 1.3 using 5-chloro-3-(2-ethoxypyridin-3-yl)-6-fluoro-3-hydroxy-1,3-dihydroindol-2-one as 3-hydroxy-1,3-dihydroindol-2-one IV and 2,4-dimethoxyphenylsulfonyl chloride as sulfonyl chloride VII. 5-Chloro-3-(2-ethoxypyridin-3-yl)-6-fluoro-3-hydroxy-1,3-dihydroindol-2-one was prepared in analogy to example a.1.

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