Analgesic 1-oxa-, aza- and thia-spirocyclic compounds

Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Fungus – except allergen – or component thereof or substance...

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2603303, 2603309, 424267, 424275, 424283, 424285, 546 15, 548407, 549 13, 549 77, 549331, A61K 3134, A61K 3135, C07D30794, C07D31196

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active

044381301

ABSTRACT:
Mono-Oxa-, thiaspirocyclic-benzene-acetamide and -benzamide compounds of the formula ##STR1## wherein p, n, m, A, E, R, R.sub.1, R.sub.2, X, Y and Z are as defined in the specification, e.g., (.+-.)-(5.alpha.,7.alpha.,9.beta.)-3,4-dichloro-N-methyl-N-[7-(1-pyrrolidi nyl)-1-oxaspiro[4.5]dec-8-yl]benzeneacetamide, and the pharmacologically acceptable salts thereof, are useful as analgesic compounds having low physical dependence liability, compared to morphine and methodone, and low dysphoria side effects. Some of these compounds have potent analgesic activity when administered orally, and some have low CNS sedative side effects. Pharmaceutical compositions and methods for using these compounds as analgesics are disclosed. Processes for preparing this class of compounds are also disclosed.

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