Anacardic acids, 6-pentadecadienylsalicylic acid and 6-[8(Z)-pentadecatrienyl]salicylic acid were synthesized from aldehyde and acetoacetate with 1, 2-addition.
Anacardic acids, 6-pentadecylsalicylic acid (1) and 6-[8(Z)-pentadecenyl]salicylic acid (2) were synthesized from isoxazoles by annelation reactions with ethyl acetoacetate.