| abstract |
(57) [Summary] [Structure] Formula I: (In the formula, R is hydrogen or acetoxy, R 1 is C 1 -C 6 alkyl, R 2 is hydrogen, C 1 -C 6 alkyl or —COO. R 3 and R 3 represent hydrogen or a compound represented by C 1 -C 6 alkyl), which is a preparation for suppressing the phosphatidylinositol 3-kinase-dependent state, which comprises as an active ingredient. [Effect] It is useful for treating a phosphatidylinositol 3-kinase-dependent condition, particularly a neoplasm, in mammals, particularly humans. |