| 摘要 |
<p>A compound represented by the formula (I) (wherein X and X’ are the same or different and each represents hydrogen, etc.; R1 and R2 are the same or different and each represents hydrogen, etc.; R3 represents an optionally substituted hydrocarbon group, etc.; R4 represents hydrogen, etc.; Y and Ya are the same or different and each represents a bond or a spacer having a C1-8 main chain; and Z and Za are the same or different and each represents hydrogen, etc.), a salt of the compound, or a prodrug of either. They have inhibitory activity against somatostatin receptor binding and are effective in the prevention of and treatments for, e.g., diseases in which somatostatin participates.</p> |
