Patent ID: 8642769

Claim:
A piperidine-flavan alkaloid compound of formula (I): or a pharmaceutically acceptable salt thereof, wherein: one of R 1 and R 2 is hydrogen, and the other of R 1 and R 2 is an optionally substituted 2-piperidinyl group characterized by formula (A): n is 0, 1, 2, or 3; R 3 , R 4 and R 5 are each independently selected from the group consisting of hydrogen, hydroxyl, and C 1 -C 4 alkoxy; R 6 , R 7 , and R 8 are each independently hydrogen, C 1 -C 4 alkyl, or R 11 C(O)—; R 9 is hydrogen, C 1 -C 4 alkyl, or R 12 C(O)—; R 10 at each occurrence is independently hydrogen, C 1 -C 4 alkyl, or oxo (═O); R 11 is hydrogen or C 1 -C 4 alkyl; and R 12 is hydrogen, C 1 -C 4 alkyl, or OR 11 .