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Paper | Regular issue | Vol 75, No. 5, 2008, pp.1109-1122
Published online, 1st February, 2008
DOI: 10.3987/COM-07-11283
Structures of New Triterpene Glycosides, Malbrancheosides A - D, from Malbranchea filamentosa

Daigo Wakana, Tomoo Hosoe, Takeshi Itabashi, Hideaki Okada, Kazutaka Fukushima, and Ken-ichi Kawai*

*Faculty of Pharmaceutical Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo 142-8501, Japan

Abstract

In the course of searching for new biologically active metabolites in Malbranchea filamentosa, four new triterpene glycosides, malbrancheosides A (1) - D (4), were isolated. The structures of 1- 4 were confirmed by the chemical and spectro¬scopic investigation. Malbrancheosides A (1) - D (4) are the first example of triterpenoidal glycosides having D-glucosamine derivatives from the fungal sources.