New tetraterpene glycosides from the fruits of Lycium chinense

Abstract

Two new compounds lyciumtetraterpenic hexaarabinoside (1) and tetraterpenyl hexaarabinoside (2), along with two known compounds, were isolated from the methanol extract of the fruits of Lycium chinense Miller (Solanaceae), and their structures have been elucidated as 6-(1,1,5-trimethyl-5α-hydroxycyclohexanyl)-6′-(1′,1′,5′-trimethyl-2′β-hydroxycyclohexanyl)-9,13,9′,13′-tetramethyloctadec-7,9,11,13,15,7′,9′,11′,13′-nonene-5α-D-arabinopyranosyl(2a → 1b)-β-D-arabinopyranosyl-(2b → 1c)-β-D-arabinopyranosyl-2′-β-D-arabinopyranosyl-(2d → 1e)-α-D-arabinopyranosyl-(2e → 1f)-α-D-arabinopyranoside (1) and 1(6),11(12),13(14),1′(6′),11′(12′),13′(14′)-dodecahydro-β-caroten-4β,4′β-diol-4β-L-arabinopyranosyl-(2a → 1b)-β-L-arabinopyranosyl-(2b → 1c)-β-D-arabinopyranosido-4′β-L-arabinopyranosyl-(2d → 1e)-β-L-arabinopyranosyl-(2e → 1f)-β-D-arabinopyranoside (2) on the basis of spectral data analysis and chemical reactions.

Keywords:

• Lycium chinense
• Solanaceae
• fruits

Acknowledgements

This paper was written as part of Konkuk University's research support program for its faculty on sabbatical leave in 2012.