1-(3-bromophenyl)-2H-pyrazolo[3,4-d]pyrimidin-4-one

1-(3-ethoxyphenyl)-2H-pyrazolo[3,4-d]pyrimidin-4-one

1-(3-methoxyphenyl)-2H-pyrazolo[3,4-d]pyrimidin-4-one

1,5-二氢-1-(2-吡啶)-4H-吡唑并[3,4-d]嘧啶-4-酮

1,5-二氢-1-(2-噻唑)-4H-吡唑并[3,4-d]嘧啶-4-酮