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US 4,232,155 AGranted
Purine compounds
AssigneeBristol-Myers Company
InventorsTakayuki Naito, Susumu Nakagawa, Tetsuro Yamasaki, Taka-Aki Okita, Haruhiro Yamashita
Life of this patent
Estimating the term…
Abstract
New orally active bronchodilating 6-amino-purine derivatives substituted in the two position with alkylamino or cyclohexylamino and in the nine position with 2-cyclohexenyl or cyclohexyl are disclosed.
Claims5
A compound having Formula I ##STR16## wherein R is lower alkyl of 1 to 4 carbon atoms inclusive or cyclohexyl;
- R.sub.1 is cyclohexyl or 2-cyclohexenyl;
- or a pharmaceutically acceptable acid addition salt thereof.
Dependencies are inferred from the claim text.