Patent ID: 8329723

Claim:
A β-carboline compound having the structure: wherein R 1 is furanyl, 1-naphthyl, anthracyl, phenanthracyl, 3-quinolinyl, 5-quinolinyl, isoquinolinyl, quinoxalinyl, phenyl substituted with pyridinyl each optionally substituted with C 1 -C 4 alkyl or C 1 -C 4 alkoxy; and R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are independently —H, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, or C 1 -C 4 alkoxyphenyl; wherein one of R 5 , R 6 or R 7 is C 1 -C 4 alkoxy or C 1 -C 4 alkoxyphenyl.