Further Isolation of Glycosides from Cynanchum hancockianum

Three new glycosides, neohancosides B, C, and D, have been isolated as polyacetates 2, 3, and 4 from Cynanchum hancokianum along wiht neohancoside A hexaacetate {1}. The new compounds were established as 9-hydroxylinalool-3-O-β-D-xylopyranosyl-(1→6)β-D-glucopyranoside heptaacetate {2}, 2-hydroxyacetophenone-2-O-β-D-xylopyranosyl-(1→6)-β-D-glucopyranoside hexaacetate {3}, and 6'-O-sinapolysucrose octaacetate {4} by means of spectroscopic and chemical tools