P

Inventor

TSENG SHIN S

US13 patents

Patents

13 patents
US5169850ADec 8, 1992

N-(dialkylamino)methylene)-substituted pyrazolo(1,5-a)-pyrimidine-3-carboxamides and N-(dialkylamino)methylene-substituted-4,5-dihydropyrazolo-(1,5-a)-pyrimidine-3-carboxamides

AMERICAN CYANAMID CO30 citations92
US4847256AJul 11, 1989

4,5-dihydro and 4,5,6,7-tetrahydropyrazolo(1,5-A)-pyrimidines

AMERICAN CYANAMID CO34 citations92
US4576943AMar 18, 1986

Pyrazolo[1,5-a]pyrimidines

AMERICAN CYANAMID CO30 citations92
US4904658AFeb 27, 1990

Substituted-6H,8H-pyrimido-[1,2,3-cd]purine-8,10-(9H)-diones and substituted-6H,10H-pyrimido[1,2-cd]purin-10-ones

AMERICAN CYANAMID CO19 citations82
US5219857AJun 15, 1993

Method of treating cognitive and related neural behavioral problems

AMERICAN CYANAMID CO15 citations73
US5126340AJun 30, 1992

4-[(substituted)alkylcarbonyl]-4,5-dihydro and -4,5,6,7-tetrahydro-7-[(substituted)-phenyl]pyrazolo[1,5-a]pyrimidine-3-carbonitriles

AMERICAN CYANAMID CO13 citations73
US5059691AOct 22, 1991

N-((dialkylamino)methylene)-substituted pyrazolo (1,5-A)-pyrimidine-3-carboxamides and N-((dialkylamino)methylene)-substituted-4,5-dihydropyrazolo-(1,5-A)-pyrimidine-3-carboxamides

AMERICAN CYANAMID CO8 citations73
US4963553AOct 16, 1990

4-[(substituted) alkylcarbonyl]-4,5-dihydro- and -4,5,6,7-tetrahydro-7-[(substituted)phenyl]pyrazolo[1,5-a]pyrimidines

AMERICAN CYANAMID CO14 citations73
US4562189ADec 31, 1985

Pyrazolylpiperazines

AMERICAN CYANAMID CO17 citations73
US5013737AMay 7, 1991

2,4,8-Trisubstituted-3H,6H-1,4,5A,8A-tetraazaacenaphtylene-3,5-(4H)-diones and 2,4-8-trisubstituted-4,5-dihydro-5-thioxo-3H,6H-1,4,5A,8A-tetrazaacenaphthylen-3-ones

AMERICAN CYANAMID CO2 citations62
US4916137AApr 10, 1990

5-(Substituted-amino)-8-(phenyl or substituted-phenyl)-3H,6H-1,4,5A,8A-tetraazaacenaphthylen-3-ones and treatment of neural behavior disorders

AMERICAN CYANAMID CO5 citations62
US4888345ADec 19, 1989

4,8-disubstituted-1,2-dihydro and 1,2,3,4-tetrahydroimidazo-[1,5-a] pyrimidines

AMERICAN CYANAMID CO2 citations62
US4963552AOct 16, 1990

1-substitute-1,2-dihydro-4-((substituted)phenyl)imidazo-[1,5-a]pyrimidine-8-carbonitriles

AMERICAN CYANAMID CO2 citations60