This invention relates to cyclobutane derivatives represented by the following general formula (1) and physiologically acceptable salts thereof:
wherein B represents a nucleic acid base derivative, R¹ and R² independently represent hydrogen atom, dialkylaminoacyl group, 1,4-dihydro-1-methylnicotinoyl group or substituted phosphoric acid group, provided that either one of R¹ and R² is a group other than hydrogen atom.
The compounds of this invention exhibit a high oral absorbability and are metabolized in vivo into the compounds of formula (1a). Accordingly, the compounds of this invention are expectedly useful as antiviral agent.
本发明涉及由以下通式(1)代表的
环丁烷衍
生物及其生理上可接受的盐类:
其中 B 代表核酸碱衍
生物,R¹ 和 R² 独立地代表氢原子、二烷基
氨基酰基、1,4-二氢-1-甲基烟酰基或取代的
磷酸基,条件是 R¹ 和 R² 中的任一个是氢原子以外的基团。
本发明的化合物具有很高的口服吸收性,并可在体内代谢成式(1a)化合物。因此,本发明化合物有望用作抗病毒剂。