Kinginoside, a New Acyl Group Carrying Iridoid Bioside from Lonicera Morrowii.

A new iridoid glycoside, kinginoside, was isolated from Lonicera morrowii (Caprifoliaceae). Its structure was deduced to be sweroside-6'-O-(4"-O-feruloyl-α-L-rhamnoside mainly by spectroscopic analysis. The structure was confirmed by chemical synthesis of the corresponding acetate from sweroside of known structure.