Rhododendron lepidotum
Rhododendron lepidotum
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Natural products/compounds from Rhododendron lepidotum
- Cat.No. Product Name CAS Number COA
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BCN5692
Myricetin529-44-2
Instructions
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BCN4327
Ursolic acid77-52-1
Instructions
New natural compounds from Rhododendron lepidotum.[Pubmed: 23941615]
Phytochemical investigation of the aerial parts of Rhododendron lepidotum yielded 8-[2',6'-dimethoxy-4'-(1″,2″,3″-trihydroxy-propyl)-phenyl]-7-hydroxy benzopyranone (1), 3-O-β-d-glycopyranosyl betulinic amide (2) and 8-hydroxy-7,7'-oxydicoumarin (4) and five known compounds. Among the known molecules, betulinic amide (3) was earlier reported as a semi-synthetic product. The structures of new molecules 1, 2 and 4 were elucidated on the basis of extensive spectroscopic investigations (1D NMR, 2D NMR and mass spectrometry).
Chemical constituents of Rhododendron lepidotum.[Pubmed: 22667149]
An unusual natural product named 2,4,6-trihydroxacetophenone-3, 5-di-C-beta-D-glucoside (18) were isolated from aerial parts of Rhododendron lepidotum grows in Tibet, along with other 17 known compounds: hopenol-B (1), lupeol (2), ursolic acid (3), avicularin (4), quercetin (5), myricetin (6), hyperoside (7), myricetin-3'-O-beta-D-xyloside (8), (+)-taxifolin-3-O-alpha-L-arabinopyranoside (9), (+)-taxifolin-3-O-beta-D-glucopyranoside (10), lyoniside (11), confluentin (12), 2-(4-hydroxyphenyl)-ethyltriacontanoate (13), 2, 6-dimethoxy-4-hydroxyphenyl-1-O-beta-D-glucopyranoside (14), (-)-2-hydroxy-5-(2-hydroxyethyl) phenyl-O-beta-D-glucopyranoside (15), (-)-isola-riciresinol (16) and isofraxoside (17). All the compounds were firstly isolated from this plant as well as compounds 1, 13-18 were reported occurrence in R. spp. for the first time. The structures were identified based on analyses of spectroscopic data and physico-chemical evidences.
New coumarin glycosides from Rhododendron lepidotum.[Pubmed: 18191028]
Two new coumarin glycosides, named Rhodonin (1) and Rhodonetin (2) were isolated from the aerial parts of Rhododendron lepidotum.
