| abstract |
The present invention relates to a compound of formula (I) or a pharmaceutical salt thereof as follows, 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 intersecting interrupted line represents a bond formed by linking Ri to the molecule of formula (I), R 2 and R 3 are independently OH or H Where R 2 and R 3 are not simultaneously OH, and R 4 is H 5 R 5 C (O), R 5 CH 2 OC (O), or R 5 CH 2 NHC (O), R and R 4 are not simultaneously H and R 5 has the general formula: CH 3 — (CH 2 ) n — (CH═CH—CH 2 ) m —CH═CH— (CH 2 ) k — k is an integer of 0 to 7, m is an integer of 0 to 2, and n is an integer of 0 to 10. Also disclosed are methods of making and using these compounds. [Chemical 1] [Selection] Figure 1 |