ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,764, issued on Aug. 12, was assigned to Pfizer Inc. (New York).
"Pharmaceutical compounds" was invented by Matthew Barrett (Stevenage, Great Britain), George Stuart Cockerill (Stevenage, Great Britain) and James Good (Stevenage, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "Benzodiazepine derivatives of formula (I): (I) wherein: each of R1 and R2 is independently H or halo; R3 is H, C1-C6 alkyl or -NHR8; either (i), a, c and c are all bonds, with, b, d and f absent; or b, d, and f are all bonds, with a, c, and c absent; R4 is H or a group selected from C1-C6 alkyl, C3-C6 cycloalkyl and 4- to 10-membered heterocyclyl, the group being u...