HYPERABAS: BIOLOGICALLY ACTIVE ABSCISIC ACID ANALOGS WITH UNSATURATED CARBON SUBSTITUENTS AT THE 8'-METHYL OR 9'-METHYL CARBON ATOMS

摘要

The invention disclosed relates to a new class of abscisic acid (ABA) analogs of formula (I) wherein one of R1 is alkenyl, alkynyl, aryl, cycloalkenyl, other further substituted carbon chain including deuterium containing residues, and carbon containing substituents with heteroatoms and halogens and the other is methyl, and wherein the five member carbon side chain includes a methyl group at C3, with C5 attached to the ring as shown, including a trans double bond at the C4-C5 position, or a triple bond at this position, and either a cis or a trans double bond at the C2-C3 position, and R2 is CH2OH, CHO, COOH, COO alkyl, or derivatives thereof, and wherein the cyclohexanone ring double bond may also be reduced and to a novel process for synthesizing such ABA analogs.