Substituted 9H-8-oxo-pyrimido(2,1-f)purine-2,4-diones, process for their production and pharmaceutical compositions containing them
申请人:SCHERING CORPORATION
公开号:EP0107165A1
公开(公告)日:1984-05-02
The new compounds are compounds of formula (I)
and its tautomer and the pharmaceutically acceptable salts thereof, wherein
R1 and R2 are the same or different and are hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, aryl; alkyl substituted by cycloalkyl, aryl or heterocyclic radical;
R3 is hydrogen, alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, acyloxyalkyl, oxoalkyl, aryl; alkyl substituted by cycloalkyl, cycloalkenyl, aryl, hydroxy, cyano, halo or heterocyclic radical; -alkyl-X-CnH2n-1 wherein X is O,S,S+-O-, S02 or-N-CpH2p-1; -(CH2)qC(O)NR6R7 or-(CH2) C(O)OR8,
R4 is hydrogen, alkyl, aryl, a heterocyclic radical; or alkyl substituted by cycloalkyl aryl or a heterocyclic radical;
R5 is hydrogen acyl, or alkyl.
These compounds are useful as antiinflammatory agents for treating inflammatory conditions such as arthritis, spondyiitis, and tendonitis in mammals.
Regiospecific reduction of the 2-carbonyl group of the 6-hydroxypyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione system by selected metal hydrides. A novel reduction of a fused xanthine nucleus
作者:David J. Conn、James J. Kaminski、Daniel M. Solomon、Andrew T. McPhail
DOI:10.1021/jo00249a023
日期:1988.7
US4569936A
申请人:——
公开号:US4569936A
公开(公告)日:1986-02-11
Antiinflammatory activity of substituted 6-hydroxypyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-triones. Atypical nonsteroidal antiinflammatory agents
作者:David J. Blythin、James J. Kaminski、Martin S. Domalski、James Spitler、Daniel M. Solomon、David J. Conn、Shing Chun Wong、Laura Lehman Verbiar、Loretta A. Bober
DOI:10.1021/jm00156a032
日期:1986.6
substituted derivatives of the fused tricyclic system 6-hydroxypyrimido[2,1-f]purine-2,4,8(1H,3H,9H)-trione, is described. Synthetic procedures and structure determination with the assistance of X-ray crystallography are discussed. Semiempirical molecular orbital calculations are used to investigate the relative stability of the possible isomers and tautomers of the title compounds. A biological profile