(2008/06/13)
p. 295 - 299
(2007/10/02)(2008/06/13)
p. 165 - 168
(2007/10/02)7-(2-cyclohexylamino-ethyl)-1,3-dimethyl-3,7-dihydro-purine-2,6-dione; hydrochloride
7-(2-benzylamino-ethyl)-1,3-dimethyl-3,7-dihydro-purine-2,6-dione
1,3-dimethyl-7-vinyl-3,7-dihydro-purine-2,6-dione
7-(2-Aminoethyl)theophylline
7-[2-[4-(p-fluorobenzoyl)-piperidino]-ethyl]-theophylline