Patent ID: 8785479

Claim:
A compound of Formula I: wherein, R is H or C(O)R 6 ; R 1 is H, C(O)R 6 , or Q; Q is R 2 is independently H, alkyl, alkenyl, aryl, heterocyclyl, each substituted with 0, 1 or multiple R 5 , or —C(O)R 5 ; R 3 is independently H, alkyl, or alkenyl, each substituted with 0, 1 or multiple R 5 ; R 4 is independently alkyl or alkoxy, substituted with 0, 1, or multiple R 5 ; R 5 is alkyl, alkenyl, halo, haloalkyl, alkoxy, haloalkoxy, C(O)R 8 , arylalkoxy, or aryl; R 6 is alkoxy or benzyloxy; R 7 is H, —C(O)R 4 , or —CH 2 OC(O)R 4 ; and R 8 is H, alkenyl, halo, haloalkyl, alkoxy, haloalkoxy, arylalkoxy, or aryl.