RATIO OF (S)- TO (R)-ABSCISIC ACID FROM PLANT CELL CULTURES SUPPLIED WITH RACEMIC ABA

Article abstract of DOI:10.1016/0031-9422(89)80246-8

Determinations of the ratios of (S)- to (R)-abscisic acid have been made by an NMR method employing γ-cyclodextrin as a chiral complexing agent with the sodium salt of abscisic acid.In cultures of bromegrass cells that have been fed synthetic racemic abscisic acid the natural isomer is depleted from the medium much more rapidly than the unnatural form.The NMR method is shown to be applicable to biologically active compounds related to abscisic acid.Key Word Index - Bromus inermis; Gramineae; bromegrass; NMR; optical isomer; cyclodextrin; abscisic acid; abscisic acid analogues.