Newbouldiosides A-C, phenylethanoid glycosides from the stem bark of Newbouldia laevis

Three phenylethanoid glycosides, newbouldioside A-C, were isolated from the stem bark of Newbouldia laevis. In addition, a sodium salt of analogue B representing the first phenolate within this group was encountered. Newbouldioside C represents the first member possessing a linear glc-rha-api chain and a sinapoyl moiety.