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Title: Highly oxygenated spiro-biflavanoids from Anneslea fragrans twigs
Authors: Ashraf M. Omar
Sijia Sun
Min Jo Kim
Ahmed M. Tawila
Dya Fita Dibwe
Ampai Phrutivorapongkul
Naoki Toyooka
Suresh Awale
Keywords: Agricultural and Biological Sciences
Biochemistry, Genetics and Molecular Biology
Issue Date: 1-Dec-2020
Abstract: © 2020 Phytochemical Society of Europe Phytochemical investigation of the ethanolic extract of Anneslea fragrans twigs resulted the isolation of two new highly-oxygenated and sterically hindered spiro-biflavanoids, named fragranols B and C (1 and 2), together with a known compound 3-epilarixinol (3). The structural elucidation was achieved by HRFABMS, NMR spectroscopic analysis, and quantum ECD calculations. A plausible biogenetic pathway of the isolated compounds is also proposed.
ISSN: 18767486
Appears in Collections:CMUL: Journal Articles

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