Recommanded Product: 58081-05-3. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: (R)-4-Hydroxydihydrofuran-2(3H)-one, is researched, Molecular C4H6O3, CAS is 58081-05-3, about Identification of Novel Glycosidic Aroma Precursors in Saffron (Crocus sativus L.). Author is Straubinger, Markus; Bau, Brigitte; Eckstein, Susanne; Fink, Margit; Winterhalter, Peter.
The methanolic extract of saffron was separated with the aid of multilayer coil countercurrent chromatog. After purification by HPLC, the following seven novel carotenoid metabolites were identified on the basis of their spectral (UV, FTIR, MS, NMR, CD) data: (4R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enecarbaldehyde O-β-D-gentiobioside (1), (4R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enecarboxylic acid O-β-D-glucopyranoside (2), 6-hydroxy-3-(hydroxymethyl)-2,4,4-trimethylcyclohexa-2,5-dienone 6-O-β-D-glucopyranoside (3), (2Z)-3-methylpent-2-enedioic acid 1-[1-(2,4,4-trimethyl-3,6-dioxocyclohexenyloxy)-O-β-D-glucopyranosid-6-yl] ester (4), (5S)-5-hydroxy-7,7-dimethyl-4,5,6,7-tetrahydro-3H-isobenzofuran-1-one O-β-D-glucopyranoside (5), (1R,5S,6R)-5-(hydroxymethyl)-4,4,6-trimethyl-7-oxabicyclo[4.1.0]heptan-2-one O-β-D-glucopyranoside (6), and (1R)- 3,5,5-trimethylcyclohex-3-enol O-β-D-glucopyranoside (7).
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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem