Invention Grant
US09440927B2 Process for preparation of substituted 3'-hydroazino-diphenyl-3-carboxylic acid compounds 有权
取代的3'-氢氮杂 - 二苯基-3-羧酸化合物的制备方法

Process for preparation of substituted 3'-hydroazino-diphenyl-3-carboxylic acid compounds
Abstract:
The present invention provides a process for the preparation of substituted 3′-hydrazino-biphenyl-3-carboxylic acid compounds. The present invention further provides a process for the preparation of 3′-{N′-[1-(3,4-dimethylphenyl)-3-methyl-5-oxo -1,5-dihydro-pyrazol-4-ylidene]hydrazino}-2′-hydroxybiphenyl-3-carboxylic acid, its intermediate compounds and pharmaceutically acceptable salts thereof.
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