(+-)-Cyclohexylphenylglycolic acid → (R)-3-(2-Cyclohexyl-2-hydroxy-2-phenyl-acetoxy)-1-[(4-phenyl-isoxazol-3-ylcarbamoyl)-methyl]-1-azonia-bicyclo[2.2.2]octane bromide

Participants

Reaction Steps

This compound is prepared analogously to (R)-3-(2,2-diphenyl-propionyloxy)-1-(isoxazol-3-ylcarbamoylmethyl)-1-azonia-bicyclo[2.2.2]octane bromide (Example 4), substituting (R)-3-hydroxy-1-(isoxazol-3-ylcarbamoylmethyl)-1-azonia-bicyclo[2.2.2]octane bromide (Intermediate A) with (R)-3-hydroxy-1-[(4-phenyl-isoxazol-3-ylcarbamoyl)-methyl]-1-azonia-bicyclo[2.2.2]octane bromide (Intermediate I) and by replacing 2,2′-diphenylpropionic acid with cyclohexyl-hydroxy-phenyl-acetic acid, yielding the titled compound as a diastereomeric mixture. (M+544.4)

Provenance & Evidence