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Iridoid and phenylethanoid glycosides from Heterophragma sulfureum
- Kaewkongpan, Choosak, Sahakitpichan, Poolsak, Ruchirawat, Somsak, Kanchanapoom, Tripetch
- Phytochemistry letters 2015 v.12 pp. 277-281
- Heterophragma, branches, chemical analysis, glycosides, leaves, spectral analysis
- An unusual iridoid diglycoside (specioside 6′-O-α-d-galactopyranoside) and a new phenylethanoid triglycoside (heterophragmoside) were isolated from the leaves and branches of Heterophragma sulfureum together with specioside, verminoside, 6-trans-feruloylcatapol, stereospermoside, (−)-lyoniresinol 3α-O-β-d-glucopyranoside, (+)-lyoniresinol 3α-O-β-d-glucopyranoside, (−)-5′-methoxyisolariciresinol 3α-O-β-d-glucopyranoside, (+)-5′-methoxyisolariciresinol 3α-O-β-d-glucopyranoside, and dehydroconiferyl 4-O-β-d-glucopyranoside. The structural elucidations were based on analyses of chemical and spectroscopic data.