Simple Methods for the Preparation of Enantiomerically Pure Abscisic Acid (ABA) Analogues from (S)-(+)-ABA

Abstract

(1′S, 2Z, 4E)-3-Methyl-5-(1-hydroxy-2,6,6-trimethyl-4-oxo-2-cyclohexenyl)-2,4-pentadienoic acid (abscisic acid, ABA) is efficiently converted into the corresponding aldehyde, primary alcohol, and triol derivatives using readily available reagents (oxalyl chloride, NaBH₄, MnO₂) and simple reaction conditions.