[Alkyl-6-benzoxazolinones. A chemical and pharmacodynamic study]

A series of 6-alkylbenzoxazolinones was synthesized by reduction of corresponding acyl derivatives. Two reduction processes were used, Clemmensen reduction and triethylsilane-trifluoroacetic acid reduction, but only the latter represents a general procedure for synthesis of alkyl derivatives. Pharmacological study shows that reduction of the carbonyl group is accompanied by a decrease of analgesic activity with appearance of a psycholeptic profile.