| abstract |
General formula:n n n n n n n n [Wherein T is a lower alkylene group; u is 0 or 1; R 1 and R 2 are the same or different, and each represent H, a lower alkyl group, and the like, and R 3 is or ; R 4 represents H or a lower alkanoyl-lower alkyl group.], And the compound represented by the above shows an inhibitory activity against protein kinase C (PKC, Ca 2+ / phospholipid-dependent serine / threonine protein phosphatase), and a protein kinase. It is useful as a C inhibitor. |