The present invention relates to a new process for preparing diisopropyl [l-(hydroxymethyl)-cyclopropyl]oxy}methylphosphonate (2), which is a key intermediate for synthesizing an antiviral (particularly, against hepatitis B virus) nucleoside analogue. The present invention also relates to new intermediates, and a process for preparing the antiviral nucleoside analogue from the compound (2) prepared according to the present invention.
本发明涉及一种用于制备
二异丙基[1-(羟甲基)-环丙基]氧基}
甲基膦酸酯(2)的新工艺,该化合物是合成抗病毒(特别是针对乙型肝炎病毒)核苷类似物的关键中间体。本发明还涉及新的中间体,以及从根据本发明制备的化合物(2)制备抗病毒核苷类似物的工艺。