Patent ID: 8299119

Claim:
An isolated compound of Formula II: wherein each R, which may be the same or different, is selected from the group consisting of hydrogen and R 1 ; and each R 1 , which may be the same or different, is selected from the group consisting of substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted cycloalkylalkyl, substituted or unsubstituted aryl, substituted or unsubstituted arylarlkyl, a protecting group, —C(O)—R a , —C(O)O—R a , —C(O)NR a R a , —S(O) n —NR a R a (wherein n represents 1 or 2, and R a is selected from the group consisting of hydrogen and substituted or unsubstituted alkyl); and their pharmaceutically acceptable salts.