6'-0-apiosyl-verbascoside in the flowers of mullein (Verbascum species).

Phenylethanoid triglycoside acylated with caffeic acid was isolated from the inflorescences of V, lychnitis and identified as verbascoside 6'-0-beta-D-apiofuranoside (forsythoside B). It has also been found, that forsythoside B is one of the major constituents in the inflorescences of V. lychnitis and V. nigrum, whereas in the flowers of V. phlomoides and V. densiflorum it was hardly detectable.