| 摘要 |
<p>A process for producing a butanetriol derivative represented by formula (1) useful as a material for medicines, characterized by reacting a compound represented by formula (3), wherein R?1 and R2¿ represent different protecting groups, with an ethylene glycol derivative under basic conditions to obtain a compound represented by formula (4) or (4a) and selectively removing one or two protecting groups from this compound.</p> |
