A novel heterocyclic derivative of formula (I):
wherein R1 represents
and R2 represents hydrogen or acyl. When R2 is acyl, the derivative can be prepared, for example, by the following process:
wherein R4 is acyl and R1 is
The derivative is less toxic and has radiosensitizing activity and antiviral activity even at a low concentration.
Radiosensitizing agents and antiviral agents containing the derivative as active component are also disclosed.
一种新颖的式(I)杂环衍
生物:
其中 R1 代表
和 R2 代表氢或酰基。当 R2 为酰基时,该衍
生物可通过以下方法制备:
其中 R4 是酰基,R1 是
该衍
生物毒性较低,即使在低浓度下也具有放射增敏活性和抗病毒活性。
此外,还公开了含有该衍
生物作为活性成分的放射增敏剂和抗病毒剂。