Piperazinyl-bis(alkylamino)pyrimidine derivatives and process for
申请人:Richter Gedeon Vegyeszeti Gyar Rt.
公开号:US05550240A1
公开(公告)日:1996-08-27
An intermediate compound is disclosed that is useful in the preparation of a lipid-peroxidation inhibiting substance and that is selected from the group consisting of: 2,4-bis[1-adamantylamino]-6-(1-piperazinyl)pyrimidine; and 4,6-bis(1-adamantylamino)-2-(1-piperazinyl)pyrimidine; or a pharmaceutically acceptable acid addition salt thereof.
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
Steroids with pregnane skeleton, pharmaceutical compositions containing
申请人:Richter Gedeon Vegyeszeti Gyar Rt.
公开号:US05547949A1
公开(公告)日:1996-08-20
Novel, therapeutically active 21-aminosteroids of formula (I) ##STR1## with pregnane skeleton, are disclosed wherein two of X, Y and Z are a nitrogen atom each and the third one is a methine group; R.sup.1 and R.sup.2 are independently from each other, a primary amino group bearing as substituent a branched-chain C.sub.4-8 alkyl -alkenyl or -alkynyl group, or a C.sub.4-10 cycloalkyl group comprising 1 to 3 ring(s) and being optionally substituted by at least one C.sub.1-3 alkyl group; or R.sup.1 and R.sup.2 are each a spiro-heterocyclic secondary amino group containing at most 10 carbon atoms and optionally at least one oxygen atom as additional heteroatom; or one of R.sup.1 and R.sup.2 is an unsubstituted heterocyclic secondary amino group containing 4 to 7 carbon atoms and the other one is an above-identified primary amino group, an above-identified spiro-heterocyclic secondary amino group, or a heterocyclic secondary amino group containing 4 to 7 carbon atoms and substituted by at least one C.sub.1-4 alkyl group; and n is 1 or 2, as well as their acid addition salts and pharmaceutical compositions containing these compounds.