Chemoselective SNAr reactions of 4,6-dichloro-2-(methylsulfonyl)pyrimidine and several related electrophiles with amines and their derivatives are described. In the presence of weak bases anilines and secondaryaliphatic amines selectively displace the chloride group. Deprotonated anilines and their carbonyl derivatives displace the sulfone group. Sterically and electronically unbiased primaryaliphatic amines
Amines useful in producing pharmaceutically active CNS compounds
申请人:Upjohn Company
公开号:US05099019A1
公开(公告)日:1992-03-24
Disclosed are .DELTA..sup.9(11) -steroids (VI) and amino substituted steroids (XI) which contain an amino group attached to the terminal carbon atom of the C.sub.17 -side chain, more particularly amino steroids (Ia and Ib), aromatic steroids (II), .DELTA..sup.16 -steroids (IIIa and IIIb), reduced A-ring steroids (IV), .DELTA..sup.17(20) -steroids (Va and Vb) and .DELTA..sup.9(11) -steroids (VI) which are useful as pharmaceutical agents for treating a number of conditions.
The aromatic amines (I), alkyl amines (II), bicyclic amines (III). ##STR1## cycloalkyl amines (IV), aromatic bicyclic amines (V), hydroquinone amines (VI), quinone amines (VII), amino-ethers (VIII) and bicyclic amino ethers (IX) are useful as pharmaceutical agents for treating a number of conditions including spinal trauma, mild and/or moderate to severe head injury, etc. Also disclosed is a method of treatment using the 3,4-dihydrobenzopyrans (XI).
(EN) Disclosed are $g(D)9(11)-steroids (VI) and amino substituted steroids of formula (XI), which contain an amino group attached to the terminal carbon atom of the C17-side chain, more particularly amino steroids (Ia and Ib), aromatic steroids (II), $g(D)16-steroids (IIIa and IIIb), reduced A-ring steroids (IV), $g(D)17(20)-steroids (Va and Vb) and $g(D)9(11)-steroids (VI) which are useful as pharmaceutical agents for treating a number of conditions.(FR) Stéroïdes $g(D)9(11) (VI) et stéroïdes à substitution amino de formule (XI), contenant un groupe amino fixé à la terminaison d'atome de carbone de la chaîne côté C17, plus particulièrement amino-stéroïdes (Ia et Ib), stéroïdes aromatiques (II), stéroïdes $g(D)16 IIIa et IIIb), stéroïdes à composés cycliques A réduits (IV), stéroïdes $g(D)17(20) (Va et Vb) et stéroïdes $g(D)9(11) (VI) utiles en tant qu'agents pharmaceutiques pour traiter un certain nombre d'états.
Disclosed are amino substituted steroids (XI) which contain a phenylpiperazinyl group attached to the terminal carbon atoms of the C.sub.17 -side chain, which are useful as pharmaceutical agents for treating a number of conditions.