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Two Enantiomeric Pairs of Meroterpenoids from Rhododendron capitatum.
Two enantiomeric pairs of meroterpenoids, (-)- and (+)-rhodonoids A and B, were isolated unprecedentedly from partially racemic mixtures that naturally occurred in Rhododendron capitatum and are the first examples of meromonoterpenes featuring a unique 6/6/ 6/4 ring system. Expand
Coumarins from the Roots and Stems of Nicotiana tabacum and their Anti-Tobacco Mosaic Virus Activity
Two new coumarins, 7-(4-hydroxyphenyl)-6H-[1, 3]dioxolo[4,5-g]chromen-6-one (1) and 7-(2-hydroxy-3,4-dimethoxyphenyl)-6H-[1,3]dioxolo[4,5-g]chromen-6-one (2), together with five known coumarinsExpand
Isoprenylated phenolic compounds with tyrosinase inhibition from Morus nigra
A new isoprenylated sanggenon-type flavanone, nigrasin K, together with three known analogs and five known Diels–Alder adducts were isolated from the twigs of Morus nigra and showed significant inhibitory effects on mushroom tyrosinase. Expand
Novel grayanane diterpenoids from Rhododendron principis
Six new grayanane diterpenoids, principinols A–F (1–6), were isolated from Rhododendron principis. Compounds 1 and 2 possess unprecedented 6,10-epoxy and 5α-OH moieties, and 1 and 3 are the first twoExpand
Isoprenylated flavonoid and adipogenesis-promoting constituents of Dodonaea viscosa.
Ten new isoprenylated flavonol derivatives, dodoviscins A-J (1-10), and seven known compounds (11-17) were isolated from the aerial parts of Dodonaea viscosa and promoted adipocyte differentiation as characterized by increased triglyceride levels in 3T3L1 cells. Expand
Five Pairs of Meroterpenoid Enantiomers from Rhododendron capitatum.
Compounds 1a and 1b are the first pair of meromonoterpenes incorporating an unprecedented 6/6/ 6/5/5 ring system, and 1a showed antiviral activity against herpes simplex virus type 1 (HSV-1) in vitro. Expand
Isoprenylated phenolic compounds with PTP1B inhibition from Morus alba.
All the new compounds and most of the known ones showed significant inhibitory effects on PTP1B in vitro with IC50 values ranging from 0.57 to 7.49μM. Expand
Enantiomeric Pairs of Meroterpenoids with Diverse Heterocyclic Systems from Rhododendron nyingchiense.
Eight enantiomeric pairs of new meromonoterpenoids (1a/1b-8a/8b) and four known compounds (9-12) were isolated from Rhododendron nyingchiense and showed diverse heterocyclic frameworks. Expand
New Isoprenylated Xanthones from Cudrania tricuspidata
A phytochemical investigation of the roots of Cudrania tricuspidata afforded three new isoprenylated xanthones, cudratricusxanthones N–P (1–3, resp.), together with five known compounds, 4–8. TheExpand
Antiviral clerodane diterpenoids from Dodonaea viscosa
Seven new clerodane diterpenoids, dodovisnoids A−G (1–7), were isolated from Dodonaea viscosa. The structures of these compounds were identified by extensive spectroscopic data. The absoluteExpand