US Patent Issued to XIZANG HAISCO PHARMACEUTICAL on June 9 for "Tricyclic fused heterocyclic PDE3/4 dual inhibitor and use thereof" (Chinese Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,743, issued on June 9, was assigned to XIZANG HAISCO PHARMACEUTICAL Co. LTD. (Lhoka, China).

"Tricyclic fused heterocyclic PDE3/4 dual inhibitor and use thereof" was invented by Yao Li (Lhoka, China), Guobiao Zhang (Lhoka, China), Xiaobo Zhang (Lhoka, China), Yaming Zhang (Lhoka, China), Linjie Yan (Lhoka, China), Pingming Tang (Lhoka, China), Yan Yu (Lhoka, China), Chen Zhang (Lhoka, China) and Pangke Yan (Lhoka, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a tricyclic fused heterocyclic compound having a PDE3/4 dual inhibitory effect represented by formula (I), a stereoisomer, a solvate, or a pharmaceutically acceptable salt t...