The purpose of the present invention is to provide a novel PI3K inhibitor. The purpose of the present invention is also to provide a substance that combines a PI3K inhibitory effect and an HDAC inhibitory effect. Finally, the present invention further provides a novel anti-cancer pharmaceutical composition containing the substance, in particular an anti-cancer pharmaceutical composition that is effective even against intractable cancer. One embodiment of the present invention is a phosphatidylinositol-3-kinase (PI3K) inhibitor comprising a depsipeptide-class compound represented by formula (1), or a physiologically acceptable salt thereof.
本发明的目的是提供一种新型
PI3K 抑制剂。本发明的目的还在于提供一种兼具
PI3K 抑制作用和 H
DAC 抑制作用的物质。最后,本发明进一步提供了一种含有该物质的新型抗癌药物组合物,特别是一种即使对难治性癌症也有效的抗癌药物组合物。本发明的一个实施方案是一种
磷脂酰肌醇-3-激酶(
PI3K)
抑制剂,包含由式(1)表示的去肽类化合物或其生理上可接受的盐。