The invention provides a process for producing a β-dihydrofuran derivative represented by formula (1) or a β-tetrahydrofuran derivative represented by formula (4), characterized in that the process includes causing a dialkyl dicarbonate, a diaralkyl dicarbonate, or a halide to act on a diol compound represented by formula (2) or (3). The invention also provides a process for producing 4'-ethynyl-2',3'-didehydro-3'-deoxythymidine or an analog thereof, the process including glycosylation and deprotection.
本发明提供了一种生产由式(1)表示的β-二氢
呋喃衍
生物或由式(4)表示的β-
四氢呋喃衍
生物的工艺,其特征在于该工艺包括使二烷基二
碳酸酯、二烷基二
碳酸酯或卤化物作用于由式(2)或(3)表示的二元醇化合物。本发明还提供了一种生产 4'-
乙炔基-
2',3'-二脱氢-3'-脱氧胸苷或其类似物的工艺,该工艺包括糖基化和脱保护。