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A New Triterpene Saponin from Pittosporum viridiflorum from the Madagascar Rainforest
Seo, Youngwan,Berger, John M.,Hoch, Jeannine,Neddermann, Kim M.,Bursuker, Isia,Mamber, Steven W.,Kingston, David G. I. 韓國海洋大學校 附設 海洋科學技術硏究所 2002 硏究論文集 Vol.11 No.1
A novel triterpenoid saponin, pittoviridoside (1), which possesses an unusual 2,3,4-trisubstituted glycosidic linkage, has been isolated from Pittosporum viridiflorum using the engineered yeast strains 1138, 1140, 1353, and Sc-7 for bioactivity-guided fractionation. The structure of this compound was determined to be 3-O-[β-D-glucopyranosyl(1→2)]-[α-D-arabinopyranosyl(1→3)], [α-1-arabinofuranosyl(1→4)-β-D-glucuronopyranosyl-21-angeloyl-22-senecioylolean-12-en-3β,15α,16α,21β,22α,28-hexol by spectral, chemical, and GC analyses. This compound showed weak cytotoxicity against the A2780 human ovarian cancer cell line.