Abstract:
Novel 6-aminouracil derivatives of the formula
WHEREIN R1 is lower alkyl which may be substituted with hydroxy or lower alkoxy, R2 is halogen, nitro or lower alkyl and n is 0, 1 or 2, show a strong inhibitory action against adenosine -3'', 5'' cyclic phosphate phosphodiesterase in vitro, and exhibit excellent pharmacological actions such as diuretic, platelet aggregation inhibitory and broncho-dilating actions.
Abstract:
Cytidine-5''-diphosphate choline and deoxycytidine-5''-diphosphate choline are produced by reacting cytidine (or deoxycytidine)-5''monophosphate with a choline phosphoramidate. Choline phosphoramidates of the formula WHEREIN R1 and R2 represent hydrogen, a hydrocarbon residue having at most seven carbon atoms, or R1 and R2 taken together represent a five- or six-membered heterocyclic ring are prepared by reacting phosphorylcholine with an amine.
Abstract:
Novel pyrazola[3,4-d]pyrimidine derivatives represented by the formula (I)whereinRls an aryl or heteroaryl group which may be substituted;Ris a lower alkyl group;R 3 and R 4 are independently hydrogen or a lower alkyl group;R 5 is hydrogen, a lower alkyl group or a lower acyl group, the group R 5 being attached at the 1- or 2- position of the pyrazole ring;Xis a lower alkylene group which may contain a hetero-atom;and the dotted line designates the presence of two double bonds in the pyrazole ring and their salts activate cerebral functions and metabolisms.
Abstract:
Novel pyrazola[3,4-d]pyrimidine derivatives represented by the formula (I)whereinRls an aryl or heteroaryl group which may be substituted;Ris a lower alkyl group;R 3 and R 4 are independently hydrogen or a lower alkyl group;R 5 is hydrogen, a lower alkyl group or a lower acyl group, the group R 5 being attached at the 1- or 2- position of the pyrazole ring;Xis a lower alkylene group which may contain a hetero-atom;and the dotted line designates the presence of two double bonds in the pyrazole ring and their salts activate cerebral functions and metabolisms.
Abstract:
Isoxazolo(3,4-d)pyrimidines of the formula … … wherein R and R , respectively, are lower alkyl; R is lower alkyl or acyl; and R is hydrogen, lower alkyl, or acyl have antiinflammatory, analgesic and antipyretic activities in mammals and low acute and subacute toxicities, as well. The compounds are particularly useful as an antiinflammatory, analgesic and antipyretic drug.
Abstract:
Novel imidazole-5-acetic acid derivatives of the formula: wherein R1 is lower alkyl, cycloalkyl or, phenyl which may be substituted with one to three of halogen, nitro, amino, mono(lower alkyl)amino, di(lower alkyl)amino, lower alkyl, lower alkoxyl, benzyloxyl or/and hydroxyl; X1, X2 and X3 are each hydrogen, halogen, nitro, amino, lower alkyl, lower alkoxyl, benzyloxyl or hydroxyl; Y is halogen and R2 is hydrogen or lower alkyl; provided that X1 is halogen, lower alkyl, lower alkoxyl, benzyloxyl or hydroxyl when R1 is unsubstituted or substituted phenyl only with one halogen, di(lower alkyl)amino, lower alkyl or lower alkoxyl, and its salts have hypotensive activity.