| 摘要 |
A novel adenine compound represented by the formula (1): wherein Z represents (un)substituted alkylene, a single bond, etc.; R1 represents an (un)substituted alkyl, alkenyl, alkynyl, cycloalkyl, aryl, or heteroaryl group; R2 represents hydrogen or (un)substituted alkyl; R3, R4 and R5 each independently represents an (un)substituted alkyl, alkenyl, alkynyl, aryl, or heteroaryl group, provided that R3 and R5 may be bonded to each other to form a 3- to 7-membered, saturated carbocycle or heterocycle in cooperation with the adjacent carbon atom; and X represents oxygen, sulfur, SO2, NR6 (R6 represents hydrogen or alkyl), or a single bond, or a pharmaceutically acceptable salt of the compound. The compound and salt are useful as a medicine.
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