7-feruloylloganin: An iridoid glucoside from stems of Lonicera insularis

Abstract

A new iridoid glucoside, 7-feruloylloganin (1), was isolated from stems of Lonicera insularis, along with six known lignans including (-)-pinoresinol, 9 alpha -hydroxypinoresinol, balanophonin, erythro-1-(4-hydroxy-3-methoxyphenyl)-2-[4-[2-formyl-(E)-vinyl]-2-methoxyphenoxyl-propane-1,3-diol, threo-1-(4-hydroxy-3-methoxyphenyl)-2-[4-[2-formyl-(E)-Vinyl]-2-methoxyphenoxy}-propane-1,3-diol and buddlenol A. The structure of 1 was determined by analyses of 2D NMR (H-1-H-1 COSY, HMQC and HMBC) and HRFABMS.