7-(4-chlorobenzyl)-8-(cyclopentyloxy)-3-methyl-1-(3-(tetrahydro-2H-pyran-2-yloxy)propyl)-1H-purine-2,6(3H,7H)-dione 在
5%-palladium/activated carbon 、
甲酸铵 作用下,
以
甲醇 为溶剂,
以87.6%的产率得到8-(cyclopentyloxy)-3-methyl-1-(3-(tetrahydro-2H-pyran-2-yloxy)propyl)-1H-purine-2,6(3H,7H)-dione