Pyrazolo[4,3-d] pyrimidine derivative process for its production antihyperlipidemic agent containing it, its intermediate, and process for the production of the intermediate
申请人:NISSAN CHEMICAL INDUSTRIES LTD.
公开号:EP0157415A2
公开(公告)日:1985-10-09
A pyrazolo[4,3-d]pyrimidine derivative having the formula:
wherein R1 is lower alkyl, phenyl or substituted phenyl, R2 is -A-CO2R21 (wherein A is alkylene having from 1 to 3 carbon atoms which is unsubstituted or substituted by methyl, and R21 is lower alkyl having from 1 to 4 carbon atoms), -CH2CO-phenyl, a saturated or unsaturated, straight chain or branched aliphatic group having from 3 to 16 carbon atoms, phenyl-lower alkyl, -CH2CN, substituted phenyl-lower alkyl, cyclohexylcyclohexyl, methylcyclohexyl, 4-thia-n-heptyl, 3,6-dioxa-n-octyl, 4-oxo-n-pentyl or
(wherein R22 is hydrogen or lower alkyl), and R3 is a saturated or unsaturated, straight chain or branched aliphatic group having from 2 to 22 carbon atoms, phenyl-lower alkyl, substituted phenyl-lower alkyl, substituted or unsubstituted phenyl-methyloxyethyl or 2-hydroxyethyl.
一种吡唑并[4,3-d]嘧啶衍生物,其式如下
其中 R1 是低级烷基、苯基或取代苯基,R2 是-A-CO2R21(其中 A 是具有 1 至 3 个碳原子的亚烷基,未被取代或被甲基取代,R21 是具有 1 至 4 个碳原子的低级烷基),-CH2CO-苯基、具有 3 至 16 个碳原子的饱和或不饱和、直链或支链脂肪族基团、苯基低级烷基、-CH2CN、取代苯基低级烷基、环己基环己基、甲基环己基、4-硫杂-n-庚基、3,6-二氧杂-n-辛基、4-氧代-n-戊基,或
(其中 R22 为氢或低级烷基),R3 为具有 2 至 22 个碳原子的饱和或不饱和、直链或支链脂族基团、苯基-低级烷基、取代的苯基-低级烷基、取代或未取代的苯基-甲基羟乙基或 2-羟乙基。