| 摘要 |
<p>The present invention is related to a compound of the formula <CHEM> wherein R<1> is a 2-methyl-1-propenyl or isobutyl group which may be substituted and R<2> is (1) a substituted alkanoyl group, (2) a substituted aroyl group having at least one substituent selected from the group consisting of C2-6 alkyl, amino, halogen, hydroxyl, lower alkoxy, cyano, carbamoyl and carboxyl, (3) an aromatic heterocycle-carbonyl, which may optionally be substituted, (4) a carbamoyl group, which may optionally be substituted, (5) an alkyl group, which may optionally be substituted, (6) a benzenesulfonyl group, which may optionally be substituted, (7) an alkylsulfonyl group, which may optionally be substituted, (8) a sulfamoyl group, which may optionally be substituted, (9) an alkoxycarbonyl group, which may optionally be substituted or (10) a phenoxycarbonyl group, which may optionally be substituted; or a salt thereof. The compound (I) has a strong angiogenesis inhibitory activity.</p> |
