CHEMICAL CONSTITUENTS OF THREE LIVERWORTS FRULLANIA INFLATA, LEPTOSCYPHUS JACKII AND WIESNERELLA DENUDATA

抄録

  The ether extracts of three liverworts, Frullania inflata, Leptoscyphus jackii and Wiesnerella denudata were chemically analyzed. The Indian F. inflata contains the germacrane-type sesquiterpene Iactone, (11S)-11,13-dihydrolipiferolide (= 8β-acetoxydihydroparthenolide), together with eight sesquiterpene hydrocarbons, α-cubebene, β-cubebene, α-copaene, β-caryophyllene, germacrene-A, α-selinene, β-selinene and β-guaiene. The Ecuadorian, L. jackii is chemically very simple. It produced a new maaliane-type sesqujterpene alcohol, ent-1α-hydroxy-3-maaliene as a major component, with (－)-bicyclogermacrene. Its structure was elucidated by spectroscopic means. From the Japanese W. denudata two germacranolides and three guaianolides were obtained. F. inflata is classified to the sesquiterpene lactone-type (Chemo-type I). There are two chemo-types of W. denudata.