申请人:THE WELLCOME FOUNDATION LIMITED
公开号:EP0119450A1
公开(公告)日:1984-09-26
A process for the preparation of 3-(N-substituted amino)-2-pyrazolines, of formula (I)
which comprises
(i) reacting of a compound of formula (II)
with a compound serving to effect substitution of a group R' on the amino group attached to the 3-position of the pyrazoline ring in the compound of formula (II), thereby to form a compound of formula (III)
and converting the compound of formula (III) to a compound of formula (I) or an acid addition salt thereof.
Certain of the intermediates of formula (III) are novel and possess pharmacological activity.
一种制备式(I)的 3-(N-取代氨基)-2-吡唑啉类化合物的工艺,包括(i)式(II)化合物与一种化合物反应,使式(II)化合物中连接在吡唑啉环 3 位上的氨基上的基团 R'发生取代反应,从而形成式(III)化合物,并将式(III)化合物转化为式(I)化合物或其酸加成盐。 某些式(III)中间体具有新颖性和药理活性。