(4-Piperidinylmethyl and -hetero)purines.

摘要

Novel (4-piperidinylmethyl and hetero)purines of formula
<CHEM>
wherein -A<1>=A<2>-A<3>=A<4>- is -N=CH-N=CH- or -CH=N-CH=N- and L is a radical L<1>-CrH2r-T-CsH2s- or
<CHEM>
the pharmaceutically acceptable acid addition salts and possible stereochemically isomeric forms thereof, which compounds are anti-allergic agents; pharmaceutical compositions containing such compounds as an active ingredient and methods of preparing said compounds and pharmaceutical compositions.