The present invention provides a process for the production of compound (III) or a deprotected product thereof: comprising reacting compound (II) with chloroacetic acid, in the presence of a reducing agent; wherein PG is a protecting group and R is OH in a suitably protected form or (A). The invention further provides intermediate compounds formed in the process of the invention, and processes for the production of intermediate compounds.
本发明提供了一种用于生产化合物(III)或其去保护产物的过程:包括在还原剂存在下,将化合物(II)与
氯乙酸反应;其中
PG是保护基,R是以适当保护形式或(A)的OH基。该发明还提供了在该发明过程中形成的中间化合物,以及生产中间化合物的过程。