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Concentriols B, C and D, three squalene-type triterpenoids from the ascomycete Daldinia concentrica
Dang Ngoc Quang1, Toshihiro Hashimoto, Masami Tanaka
1Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan.
Phytochemistry
|October 3, 2002
Abstract:
Three squalene-type triterpenoids named concentricols B, C and D (1-3) were isolated from the ethyl acetate extract of fruiting bodies of the xylariaceous ascomycete Daldinia concentrica. Their absolute structures were elucidated by analysis of 2D NMR, MS, IR and UV spectra, and the modified Mosher's method.