NEW MONOTERPENTRIOLS FROM THE FRUITING BODY OF FLAMMULINA VELUTIPES

Two monoterpentriols were isolated from the stipe segment without eith er the pileus or apical growth zone of the harvested fruiting body of I;. velutipes. The structures of these monoterpentriols were elucidate d as (1R, 2R, 4R, 8S)-(-)-p-menthane-2,8,9-triol (1) and its 8-epimer (2) based on a spectroscopic analysis and stereoselective chemical tra nsformation from an authentic monoterpene alcohol. These monoterpentri ols showed growth-promoting activities on the excised stipe with the p ileus segment, which had been excised from a fruiting body just under the growth zone before the middle stage of the rapid growth period, at concentrations below 10 ppm, while the growth of the segment was inhi bited at concentrations of 100 ppm and above.