| abstract |
A novel adenine compound represented by the formula (1): n n n n n n n n n n wherein A represents an (un)substituted aromatic carbocycle or (un)substituted aromatic heterocycle; L 1 , L 2 , and L 3 each independently represents linear or branched alkylene, etc.; R 1 represents (un)substituted alkyl, (un)substituted aryl, etc.; R 2 represents hydrogen or (un) substituted alkyl; R 3 represents (un)substituted alkyl, etc., provided that R 3 may be bonded to L 2 or L 3 to form a nitrogenous saturated heterocycle; and X represents oxygen, etc.; or a pharmaceutically acceptable salt of the compound. The compound and salt are useful as a medicine. |