This disclosure describes novel 3-substituted amino-1-phenyl-2-pyrazolines and 3-substituted amino-1-mono and disubstituted phenyl-2-pyrazolines and their C.sub.4 and C.sub.5 analogs, effective as anti-inflammatory and analgesic agents, and as antibacterial agents and/or antifungal agents.
Novel 3-amino and 3-substituted amino-1-substituted-2-pyrazolines and compositions of matter useful for meliorating the inflammation and/or the progressive joint deterioration characteristic of arthritic disease, preventing the onset of asthmatic symptoms and allergic diseases, or as analgesic, antibacterial or antifungal agents.
Preparation of aminopyrazolines and intermediates used therein
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.