Abstract
Two arabinosides (designated as YM-I and YM-IV) were isolated along with their monoacetyl derivatives (YM-II and YM-III) from the less polar glycoside portion of the total glycoside mixture which was isolated from the epigeous part of Metanarthecium luteoviride MAXIM. (Liliaceae). On the basis of chemical and physicochemical evidence including the synthesis of YM-IV pentaacetate (4b) from metagenin (6), the structure of YM-I has been elucidated to be 11-O-α-L-arabinopyranosyl-3-epi-metagenin (3), while the structure of YM-IV has been established as 11-O-α-L-arabinopyranosyl-metagenin (4).
