ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,149, issued on Aug. 26, was assigned to Sumitomo Pharma Co. Ltd. (Osaka, Japan).
"Dihydrochromene derivatives" was invented by Hitoshi Ban (Osaka, Japan), Seiji Kamioka (Osaka, Japan), Yusuke Sawayama (Osaka, Japan) and Miki Hashizume (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to the compound of formula (I) wherein R1A, R1B, R1C, and R1D are hydrogen atom, etc., R2A and R2B are hydrogen atom, etc., R3A, R3B, R3C, and R3D are hydrogen atom, etc., L is bond, etc., V is C1-6 alkylene, Q is optionally-substituted imidazole, or a pharmaceutically acceptable salt thereof, as a novel anti-tumor agent that tar...