(4S)-4-benzyl-3-[(2S,3R,4E)-3-hydroxy-6-(4-methoxybenzyloxy)-2-methylhex-4-enoyl]-1,3-oxazolidin-2-one

(3S,4R)-5-p-methoxybenzyloxy-1,3,4-trihydroxy-2-pentanone

(E)-5-(4-methoxybenzyloxy)pent-3-en-2-one

(3S,4R)-3,4-isopropylidene-5-p-methoxybenzyl-1,3,4,5-tetrahydroxy-2-pentanone