摘要 |
<p>(1) Compds. (I). where R or R1 = H or alkyl or is a monocyclic heterocyclic residue contng. one or two N, O or S atoms (one hetero-atom at least being N); R2 = is H or alkyl; R3 = H, OH or alkoxy. (2) Acid addition salts of (I) (3) Medicament contg. (I) or its salts. Analgetic agents.</p> |