ISOTACHIN A AND ISOTACHIN B, TWO SULPHUR-CONTAINING ACRYLATES FROM THE LIVERWORT ISOTACHIS JAPONICA

Article abstract of DOI:10.1016/S0031-9422(00)81055-9

Key Word Index - Isotachis japonica; Jungermanniales; Hepaticae; isotachin A; isotachin B; benzyl trans-β-methylthioacrylate; β-phenylethyl trans-β-methylthioacrylate; benzoates; cinnamates; isotachioside; 2-methoxy-4-hydroxyphenyl-1β-glucoside; stigmasteryl 3β-glucoside; chemosystematics.Abstract - Isotachin A and isotachin B, two new sulphur-containing acrylates, were isolated from the liverwort Isotachis japonica.Their structures were established to be benzyl trans-β-methylthioacrylate and β-phenylethyl trans-β-methylthioacrylate by chemical and spectral methods.This is the first report of sulphur-containing substances from bryophytes.Some previously known benzoates and cinnamates as well as 2-methoxy-4-hydroxyphenyl 1β-glucoside and stigmasteryl 3β-glucoside were also isolated.