Guaiane dimers from Xylopia vielana |
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| Authors: | Kamperdick Christine Phuong Nguyen Minh Adam Günter Van Sung Tran |
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| Affiliation: | National Center for Natural Science and Technology, Institute of Chemistry, Hoang Quoc Viet Road, Cau Giay, Hanoi, Viet Nam. |
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| Abstract: | From the leaves of Xylopia vielana (Annonaceae) two dimeric guaianes named vielanins D and E were isolated and structurally elucidated by mass and NMR spectroscopy. Vielanin D and E consist of bridged ring systems formally representing the Diels-Alder products from the hypothetical guaiane-type monomers. Due to a hemiketal function at C-8' both compounds occurred as epimeric mixtures. |
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| Keywords: | Xylopia vielana Annonaceae Vielanins A-E Sesquiterpenoids Guaiane dimers |
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