Portal de Periódicos da CAPES

Flavonoid Glycosides from Rhazya orientalis

2002; American Chemical Society; Volume: 65; Issue: 3 Linguagem: Catalão

10.1021/np010518w

1520-6025

Atsuko Itoh, Tomoko Kumashiro, Takao Tanahashi, Naotaka Nagakura, Toyoyuki Nishi,

Traditional and Medicinal Uses of Annonaceae

Six new flavonoid glycosides, quercetin 3-O-α-l-rhamnopyranosyl(1→6)-[α-l-rhamnopyranosyl(1→2)]-(4-O-trans-p-coumaroyl)-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (1), quercetin 3-O-α-l-rhamnopyranosyl(1→6)-[α-l-rhamnopyranosyl(1→2)]-(3-O-trans-p-coumaroyl)-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (2), isorhamnetin 3-O-α-l-rhamnopyranosyl(1→6)-[α-l-rhamnopyranosyl(1→2)]-(4-O-trans-p-coumaroyl)-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (3), isorhamnetin 3-O-α-l-rhamnopyranosyl(1→6)-[α-l-rhamnopyranosyl(1→2)]-(3-O-trans-p-coumaroyl)-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (4), isorhamnetin 3-O-α-l-rhamnopyranosyl(1→6)-[α-l-rhamnopyranosyl(1→2)]-(4-O-cis-p-coumaroyl)-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (5), and isorhamnetin 3-O-α-l-rhamnopyranosyl(1→6)-[α-l-rhamnopyranosyl(1→2)]-(4-O-trans-feruloyl)-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (6), were isolated from the dried aerial parts of Rhazya orientalis. The structures of 1−6 were determined by spectroscopic and chemical means.