| 摘要 |
A preventive or therapeutic agent of a proliferative disease such as cancer, having superior PI3K inhibitory effects, superior cell proliferation inhibitory action as well as superior stability in a body and water solubility, is provided. A compound represented by formula (I): [wherein, Q represents a linking group represented by —X—Y—; X represents a single bond —CO—, —CONH—, —CON(C1-4 alkyl)-, —CS—, —CSNH—, —CSN(C1-4 alkyl)-, or —SO2—; Y represents a single bond, arylene or heteroarylene; provided that X and Y are not simultaneously single bonds; and R1 represents —C0-6 alkylene-(A)m-C1-6 alkyl, or C0-6 alkylene-(A)m-C0-6 alkylene-(heterocycle)] or a pharmaceutically acceptable salt thereof.
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