Chemical constituents from the Antarctic lichen, Stereocaulon caespitosum

Publication date: October 2018Source: Biochemical Systematics and Ecology, Volume 80Author(s): Ui Joung Youn, Jae Eun So, Ji Hee Kim, Se Jong Han, Hyun Park, Il Chan Kim, Jung Han YimAbstractA phytochemical study of the methanol extract of the Antarctic lichen Stereocaulon caespitosum Redgr. led to the isolation of a tridepside (1), two depsides (2 and 3), a montagnetol derivative (4), and four mono-phenolic compounds (5–8). The structures of these compounds were confirmed by 1D- and 2D-nuclear magnetic resonance (NMR) experiments, as well as by comparison with published values. This is the first phytochemical study of S. caespitosum. In particular, compounds 1, 3, 4, and 8 have been isolated for the first time from the genus Stereocaulon and the family Stereocaulaceae. The chemotaxonomic significance of the isolated compounds is discussed.Graphical abstract
Source: Biochemical Systematics and Ecology - Category: Biochemistry Source Type: research