申请人:CARTER Clive Malcolm
公开号:US20070238875A1
公开(公告)日:2007-10-11
A process for the preparation of a compound of formula (I)
comprising the steps:
(a) reacting a compound of formula (II)
wherein L and L′ are suitable leaving groups, with a compound of formula (III)
UNH
2
(III)
to prepare a compound of formula (IV)
and subsequently (b) substituting the group R
1
by replacement of the leaving group L′.
一种制备化合物(I)的方法,包括以下步骤:(a)将式为(II)的化合物与式为(III)的化合物UNH2(III)反应,其中L和L'是适当的离去基团,以制备式为(IV)的化合物;随后(b)通过替换离去基团L'来取代基团R1。