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US 11,535,609 B2Granted
Pyrazine-2(1H)-ketone compound preparation method
AssigneeZhangzhou Pien Tze Huang Pharmaceutical Co., Ltd.
InventorsJinming Huang, Juan Yu, Jinxia Lin, Limei Yang, Jinxiang Zeng, Zhifei Fu, Miaorong Luo, Yang Zhang, Jian Li, Shuhui Chen
Life of this patent
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Abstract
Provided are preparation methods for the chemical compound represented by formula (I) and an intermediate thereof.
Claims12
A method for preparing compound 6 with compound 5, wherein the reaction step is as follows:
A method for preparing compound of formula (I) with compound 2, wherein the reaction steps are as follows:
A method for preparing compound of formula (I) with compound 6, wherein the reaction step is as follows:
Dependencies are inferred from the claim text.