1987 年 63 巻 p. 351-355
The following lichens have been analysed for steroids and nortriterpenoids by GC/MS: Evernia mesomorpha, Lecanora stenotropa, Leptogium saturninum, Nephroma helveticum, Parmelia omphalodes, Ramalina terebrata, Rhizoplaca chrysoleuca, Umbilicaria decussata, and Usnea antarctica. Fourteen steroids and three nortriterpenoids have been found.