The reaction of 5-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)furan-2-carboxylic acid (I) with SOCl2 gives the corresponding acyl chloride (II), which is then condensed with 2,4,6-trimethoxyaniline (III) to afford the target carboxamide.