The Structure of a New Ionone Glucoside from Starfruit (Averrhoa carambolaL.)

The free and bound volatile secondary metabolites of Vitis vinifera grape cv. Semillon

“…(3S*,5R*,6S*,9ζ)- 6, This component had a mass spectrum that was similar to that of 4,5-dihydrovomifoliol, but had an apparent molecular mass of 228. The mass spectrum was similar to that reported by Lutz et al (1993) for this compound, and the assignment was confirmed when enzyme hydrolysis of a sample of dendranthemoside A (i.e. the 3-glucoside of 31) gave a product with mass spectrum and GC retention time identical to those of the Semillon component.…”

C13‐Norisoprenoid glycosides in plant tissues: An overview on their occurrence, composition and role as flavour precursors

“…have been recognized to be rich sources also for this group of glycosides. 11-13q28*34*38 As to p-ionone related structures, functionalization of the 5,6-double bond leading to 5,6-epoxy-(17-19), 6-hydroxy-(25,26) and 5,6-dihydroxy structures (20,35,36) has been observed. P-Ionone-derived structures, in which the 5,6-double bond was preserved, comprise the 3,4-dihydroxylated compounds 29-32 as well as the P-D-ghcoside 28, the so-called icariside B4, which has been characterized from Epimedium grandifl~rum.~' With compounds 21-24 a few aionone-derived 3-oxygenated glycosides have been reported, including multiple conjugates of the ubiquitous plant constituent vomifoliol 21 (see Figure 2).…”

The generation of norisoprenoid volatiles in starfruit(Averrhoa carambolaL.): A review∗

“…From 24 kg of starfruit pulp the novel starfruit glycosides were isolated in pure form and characterized as their peracetates (40). From the 'H-and 13 data one of the unknown compounds was identified as the /3-D-glucopyranoside of 3,6-dihydroxy-5,6-dihydro-/8-ionol 34 (see Fig.…”