Phenylethanoid glycosides in tepals of Magnolia salicifolia and their occurrence in flowers of Magnoliaceae

Yulanosides A and B and 2′-rhamnoechinacoside were characterised from tepals of Magnolia salicifolia together with the known phenylethanol glycosides crassifolioside, echinacoside and verbascoside. Yulanosides are characteristic of Magnolia subgenus Yulania.