In order to investigate the active substances of Coleus forskohlii (Willd.) Briq., a new labdane diterpenoid, 12hydroxy-8,13E-labdadien-15-oic acid, together with two 8,13-epoxylabd-14-ene-11-one diterpenoids, 6-acetyl-1deoxyforskolin and 6-acetyl-1,9-dideoxyforskolin, was isolated on the basis of various chromatographic techniques and spectroscopic methods. Key words: 6-acetyl-1-deoxyforskolin; 6-acetyl-1,9-dideoxyforskolin; Coleus forskohlii; 12-hydroxy-8,13E-labdadien-15-oic acid; labdane diterpenoid. Xu LL, Kong LY (2006). Labdane diterpenoids from Coleus forskohlii (Willd.) Briq. J Integrat Plant Biol 48(4), 478−481.