Patent ID: 8399420

Claim:
A compound according to Formula (I) wherein, R is H, R 5 C(O), R 5 CH 2 OC(O), or R 5 CH 2 NHC(O); R 1 is where the crossing dashed line illustrates the bond formed joining R 1 to the molecule of Formula (I); R 2 and R 3 are independently OH or H, provided that R 2 and R 3 are not simultaneously OH; R 4 is H, R 5 C(O), R 5 CH 2 OC(O), or R 5 CH 2 NHC(O), provided that R and R 4 are not simultaneously H; R 5 has the general formula: CH 3 —(CH 2 ) n —(CH═CH—CH 2 ) m —CH═CH—(CH 2 ) k —; k is 4; m is 0 or 1; and n is an integer from 0 to 10, or a pharmaceutical salt thereof.