ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,241, issued on March 17, was assigned to SHIONOGI & Co. LTD. (Osaka, Japan).
"Polycyclic pyridopyrazine derivative" was invented by Yutaka Tomida (Osaka, Japan) and Takashi Kawasuji (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a compound represented by the following Formula (I): wherein ring A is a C5-C7 non-aromatic carbocycle or a 5- to 7-membered non-aromatic heterocycle; ring B is a benzene ring or the like; Q is -NHC(O)- or a 5-membered aromatic heterocycle; R1 is each independently halogen or the like; R2a and R2b are each independently hydrogen, alkyl, or haloalkyl; R3 is alkyl or the like; R4 a...