- 7-Oxodihydrokarounidiol [7-oxo-D:C-friedo-olean-8-ene-3α,29-diol], novel triterpene from Trichosanthes kirilowii
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The structure of 7-oxodihydrokarounidiol [7-oxo-D:C-friedo-olean-8-ene-3α,29-diol], isolated from the seeds of Trichosanthes kirilowii (Cucurbitaceae), was determined by chemical correlation with karounidiol [D:C-friedo-oleana-7,9(11)-diene-3α,29-diol] from the same source. Two other natural products, viz. bryonolic acid (3β-hydroxy-D:C-friedo-olean-8-en-29-oic acid) and bryononic acid (3-oxo-D:C-friedo-olean-8-en-29-oic acid), were also correlated with karounidiol.
- Akihisa,Kokke,Tamura,Nambara
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p. 1199 - 1202
(2007/10/02)
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- Bryocoumaric acid, a new triterpene from Bryonia dioica
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Bryocoumaric acid, from the roots of Bryonia dioica, is shown on the basis of chemical and spectroscopic evidence to have the structure 3α-p-hydroxycinnamyloxymultiflora-7,9(11)-dien-29α-oic acid. The structure of the new terpenoid portion, 3α-hydroxymultiflora-7,9(11)-dien- 29α-oic acid, is confirmed by correlation with bryonolic acid, 3β-hydroxymultiflor-8-en-29α-oic acid, isolated from the same plant.
- Hylands, Peter J.,Mansour, El-Sayed S.,Oskoui, Moosa T.
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p. 2933 - 2936
(2007/10/02)
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