5-[2-ethoxy-5-(4-methylpiperazin-1-yl-sulphonyl)phenyl]-1-methyl-3-n-propyl-1-hydro-7-ethoxypyrazolo[4,3-d]pyrimidine

5-[2-ethoxy-5-(4-methylpiperazin-1-ylsulfonyl)phenyl]-7-methoxy-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidine

7-bromo-1-methyl-5-[2-ethoxy-5-(4-methylpiperazinylsulfonyl)-phenyl]-3-n-propyl-1H-pyrazolo[4,3-d]pyrimidine

5-chloro-1-methyl-3-propyl-1,6-dihydro-pyrazolo[4,3-d]pyrimidin-7-one

[2-ethoxy-5-(4-methylpiperazin-1-ylsulfonyl)]phenylboronic acid