[摘要]:New fluorinated alicyclic beta-amino ester stereoisomers with a cyclohexene or cyclohexane skeleton were prepared from cis- or trans-2-aminocyclohex-3-enecarboxylic acids in five or six steps through a regio- and stereoselective hydroxylation and hydroxy-fluorine exchange. Fluorinated amino ester enantiomers were synthesized from enantiopure cis- or trans-2-aminocyclohexenecarboxylic acid (prepared by enzymatic resolution of the racemic substances). |