There provided a 12-membered-ring macrolactam derivative having antitumor activity: A compound represented by Formula (1) or a salt thereof. In this Formula, R1 is a hydrogen atom, a C1-6 alkyl group, a C1-6 alkylcarbonyl group or a C6-14 arylcarbonyl group; R2 is a hydrogen atom or a C1-6 alkyl group; R3 is a hydrogen atom or a hydroxyl group; R4 is a hydrogen atom or a hydroxyl group; R5 is a hydrogen atom or a C1-6 alkyl group; R6 is a hydrogen atom or a hydroxyl group; and R7 is an acetyl group or the like.
本发明提供了一种具有抗肿瘤活性的 12 元环大环内酰胺衍
生物:由式(1)代表的化合物或其盐。在该式中,R1 是氢原子、C1-6 烷基、C1-6 烷基羰基或 C6-14 芳基羰基;R2 是氢原子或 C1-6 烷基;R3 是氢原子或羟基;R4 是氢原子或羟基;R5 是氢原子或 C1-6 烷基;R6 是氢原子或羟基;R7 是乙酰基或类似物。