| abstract |
4-Homoisotwistane-aminoacid amides having the for mulan wherein a is 0 or 1, R 1 is hydrogen or lower alkyl, A is lower alkylene or lower alkylidene, and R 2 and R 3 , which can be the same or different, are hydrogen, lower alkyl, cycloalkyl, benzyl or substituted benzyl, orn is a saturated heterocyclic ring, acid addition salts thereof and pharmaceutical compositions containing same, possess anti-viral activity and reduced activity on the central nervous system. |