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Abstract Three hitherto unknown valeriana-type iridoid glycosides (1−3) were isolated from Viburnum punctatum, and their structures were elucidated by extensive spectroscopic analysis. The new compounds, designated as viburpunosides A − C (1−3),… Click to show full abstract
Abstract Three hitherto unknown valeriana-type iridoid glycosides (1−3) were isolated from Viburnum punctatum, and their structures were elucidated by extensive spectroscopic analysis. The new compounds, designated as viburpunosides A − C (1−3), are characterized by having a mono- or triacylated α- l -rhamnopyranosyl-(1→2)-β- d -glucopyranosyl moiety linked to C-11. This is the second report of an iridoid attached to a disaccharide other than glucose in this genus. The absolute configuration of new compounds was briefly discussed.
Journal Title: Phytochemistry Letters
Year Published: 2018
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