A. Da Settimo et al., Synthesis of purinobenzodiazepine and purinobenzotriazocine derivatives, two new heterocyclic ring systems, J HETERO CH, 36(3), 1999, pp. 639-642
The preparation of two new heterocyclic ring systems, purinobenzodiazepine
and purinobenzotriazocine derivatives by the condensation of 8-aminotheophy
lline or 8-hydrazinotheophylline with o-carboxybenzaldehyde or o-carboxyace
tophenone is described.