The Geography of Phytochemical Races

2.5 Asia 65
Fig. 2.40 Compounds 139–141 from the Cupressus versus. Chamaecyparis study. Compounds
142–145 from Jungermannia vulcanicola
clear-cut: C. funebris yielded major amounts of amentofl avone [139] and cupressufl
avone [140], with smaller amounts of hinokifl avone [141, partial structure only,
the 7″-methyl ether of hinokifl avone, and traces of mono-O-methyl derivatives of
amentofl avone and cupressufl avone (see Fig. 2.40 for structures 139–141). This
profi le is characteristic of Cupressus species, whereas profi les dominated by di- and
tri-O-methylbifl avonoids characterize Chamaecyparis species.
2.5.4 Jungermannia vulcanicola (Jungermanniaceae)
The liverwort, Jungermannia vulcanicola (Schiffn.) Steph., was collected from several
sites in Japan by Nagashima et al. (1996) who reported the new chiloscyphanetype
sesquiterpenoid [142] from sites in the prefectures of Okayama and Shiga in
southwestern Honshu. Further, the known chiloscyphane [143] was isolated from
material collected at Okayama and the new labdane diterpenoid [144], and the
known ent-13-epi-manoöl [145] from material collected at Shiga (see Fig. 2.40 for
structures 142–145). These observations suggested the existence of at least three
chemotypes of this liverwort in Japan, although the structural differences between
the pairs of compounds involve single biosynthetic steps. It would be of value in