A reductiveamination/cyclization approach towards biologically interesting trifluoromethylated four- to seven-membered ring lactams from simply prepared ω-trifluoromethylketoesters in good to excellent yields has been developed. In addition, trifluoromethylatedδ-aminoalcohols were also obtained directly from an unexpected reduction of the corresponding y-imino esters in the presence of an excess
Halomethyl derivatives of gamma-aminobutyric acid and related compounds
申请人:Merrell Toraude et Compagnie
公开号:US04326071A1
公开(公告)日:1982-04-20
Novel compounds of the following general formula are useful pharmacological agents: ##STR1## wherein Y is FCH.sub.2 - or F.sub.2 CH-; R.sub.1 is hydroxy, a straight or branched alkoxy group of from 1 to 8 carbon atoms, -NR.sub.10 R.sub.11 wherein each of R.sub.10 and R.sub.11 is hydrogen or a straight or branched alkyl group of from 1 to 4 carbon atoms or ##STR2## wherein R.sub.12 is hydrogen, a straight or branched lower alkyl group of from 1 to 4 carbon atoms, benzyl or p-hydroxybenzyl; R.sub.2 is hydrogen, alkylcarbonyl wherein the alkyl moiety has from 1 to 4 carbon atoms and is straight or branched, alkoxycarbonyl wherein the alkoxy moiety has from 1 to 4 carbon atoms and is straight or branched or ##STR3## wherein R.sub.8 is hydrogen, a straight or branched lower alkyl group of from 1 to 4 carbon atoms, benzyl or p-hydroxybenzyl; and n is the integer 2 or 3; pharmaceutically acceptable salts and individual optical isomers thereof.