Iridoid glycosides and cucurbitacin glycoside from Neopicrorhiza scrophulariiflora

Three iridoid glycosides, picrorosides A, B and C, and a cucurbitacin glycoside, scrophoside A, were isolated from the rhizomes of Neopicrorhiza scrophulariiflora. Picrorosides A, B and C have a rigid three ring skeleton.