Patent ID: 7538110

Claim:
A compound of formula I: wherein: R 1 is —OH, —OR a , —CH 2 OH, —C(═O)OR 6 , —C(═O)NR 6 R 7 , or —NR 6 R 7 ; R 2 and R 3 are each independently alkyl or alkenyl; R 4 is H, alkyl, cycloalkyl, cycloalkylalkyl, aryl, heteroaryl, aralkyl, alkylaralkyl, or heteroarylalkyl; R 5 is H, alkyl, cycloalkyl, cycloalkylalkyl, aryl, heteroaryl, aralkyl, alkylaralkyl, heteroarylalkyl, —C(═O)OR 8a , —S(═O) 2 R 8a , —C(═O)R 8b , or —C(═O)NR 8b R 8c ; R 6 is H, alkyl, cycloalkyl, alkylcycloalkyl, or aralkyl; R 7 is H, alkyl, aralkyl, or aryl; R 8a is alkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heteroarylalkyl, aralkyl, or aryl; R 8b and R 8c are each independently H, alkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heteroarylalkyl, aralkyl, or aryl; or R 8b and R 8c taken together with the nitrogen atom to which they are connected form a 4- to 8-membered heterocycloalkyl ring; R a is a hydroxyl protecting group; and m and n are each 1; or a pharmaceutically acceptable salt thereof.