| abstract |
(57) [Summary] [Purpose] PI showing PI3 kinase inhibitory action at low concentrations. The present invention provides a 3-kinase inhibitor and a novel substance as its active ingredient. [Structure] A didepside derivative represented by the following general formula (I) is used as an active ingredient of a PI3 kinase inhibitor. Embedded image However, in the general formula (I), R represents a hydrogen atom, a β-D-glucopyranosyl group or a β-D-galactopyranosyl group. |