Abstract: A new bis-iridoidal glycoside. triplostoside A have been isolated from the roots of Triplostegia grandiflora Gagnep. (Dipsacaceae) along with the known iridoids, methyl loganin, loganic acid, sweroside and daucosterol. Its structure was elucidated on the basis of spectral da-ta and chemical evidence.

Key words: Triplostegia grandiflora