The present invention relates to an antiplaque oral composition comprising an orally acceptable carrier and from 0.001% to 10% by weight of a compound of structure (I): wherein R1 and R2 are independently C1-4 alkyl and R3 and R4 are independently an alkenyl or alkyl group having from 1 to 20 carbon atoms, with the proviso that R3 and R4 are not both 2-propenyl when R1 and R2 are both CH3.