Iridoids and iridoid glucosides from fruits of Crescentia cujete

Abstract

Further study on the constituents of the fruits of Crescentia cujete afforded 16 iridoids and iridoid glucosides. The structures of eight new compounds, named crescentins I-V and crescentosides A, B, and C, were determined by analysis of their spectral data. Another eight known compounds were identified as ajugol, 6-O-p-hydroxybenzoylajugol, aucubin, 6-O-p- hydroxybenzoyl-6-epiaucubin, agnuside, ningpogenin, 5,7-bisdeoxycynanchoside and a degradation product of glutinoside.