US Patent Issued to GUANGZHOU JOYO PHARMATECH, SHANGHAI JIA TAN PHARMATECH on June 23 for "Use of pyrido[1,2-apyrimidone analogue" (Chinese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,357, issued on June 23, was assigned to GUANGZHOU JOYO PHARMATECH Co. LTD (Guangdong, China) and SHANGHAI JIA TAN PHARMATECH Co. LTD. (Shanghai).

"Use of pyrido[1,2-apyrimidone analogue" was invented by Yongguo Li (Shanghai), Wei Wei (Shanghai) and Wei Ye (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "Use of a pyrido[1,2-a]pyrimidone analogue. Specifically disclosed is use of a compound I or a pharmaceutically acceptable salt thereof in the preparation of a medicament for treating and/or preventing cancers in the digestive tract system. The compound I or the pharmaceutically acceptable salt thereof has good antitumor activity against one o...