| 摘要 |
<p>Compounds of the general formula (I), optical isomers or prodrugs of the same, pharmaceutically acceptable salts of them, or solvates thereof: (I) wherein R1 is hydroxyl or the like; R2 is optionally substituted lower alkyl or the like; R3 is hydrogen or the like; R4 is optionally substituted arylene or the like; R5 is a group of formula (i), (ii), (iii), or (iv): (i) (ii) (iii) (iv) and R6 is optionally substituted aryl or the like.</p> |
