Medicinal flowers. 28. structures of five new glycosides, everlastosides A, B, C, D, and E, from the flowers of Helichrysum arenarium

Five new glycosides, everlastosides A (1), B (2), C (3), D (4), and E (5), were isolated from the methanolic extract of the flowers of Helichrysum arenarium. Their structures were elucidated on the basis of chemical and physicochemical evidence.