CHEMICAL CONSTITUENTS OF JAPANESE RICCIOCARPOS NATANS

抄録

  From the methanol extract of Japanese Ricciocarpos natans (Ricciaceae), stigmast-4-en-3-one, sitost-4-en-3-one, lunularic acid and phytol have been isolated, together with the mixture of stigmasterol, sitosterol and fatty acids. This is the first example of the isolation of the steroid ketones from the bryophytes. The chemical constituents of Japanese R. natans are collected in the field are quite different from those of R. natans grown in axenic culture.