S. Nagai et al., SYNTHESIS AND CENTRAL-NERVOUS-SYSTEM STIMULANT ACTIVITY OF 5,8-METHANOQUINAZOLINES FUSED WITH 1,2,4-TRIAZOLE, TETRAZOLE AND 1,2,4-TRIAZINE, Journal of heterocyclic chemistry, 35(2), 1998, pp. 325-327
5,8-Methanoquinazolines fused with 1,2,4-triazole 4-5, tetrazole 6, an
d 1,2,4-Mazine 8 were prepared starting from 2-hydrazino-5,8-methanoqu
inazoline 3. Compound 3 and 6 showed the most potent central nervous s
ystem (CNS) stimulant activities.