Indonesian Medicinal Plants. I. New Furanoditerpenes from Arcangelisia flava MERR. (2). Stereostructure of Furanoditerpenes Determined by Nuclear Magnetic Resonance Analysis

YOSHIYUKI KAWAKAMI; YASUSHI NAGAI; YUKUO NEZU; TADASHI SATO; TOSHINOBU KUNII; KENGO KAGEI

doi:10.1248/cpb.35.4839

Indonesian Medicinal Plants. I. New Furanoditerpenes from Arcangelisia flava MERR. (2). Stereostructure of Furanoditerpenes Determined by Nuclear Magnetic Resonance Analysis

YOSHIYUKI KAWAKAMI, YASUSHI NAGAI, YUKUO NEZU, TADASHI SATO, TOSHINOBU KUNII, KENGO KAGEI

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Keywords: Arcangelisia flava, Menispermaceae, furanoditerpene, stereochemistry, NOE difference NMR spectroscopy, two-dimensional NMR

JOURNAL FREE ACCESS

1987 Volume 35 Issue 12 Pages 4839-4845

DOI https://doi.org/10.1248/cpb.35.4839

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Abstract

The stereostructures of four furanoditerpenes which were isolated from Arcangelisia flava MERR., 6-hydroxyarcangelisin, 2-dehydroarcangelisinol, tinophyllol, and 6-hydroxyfibleucin, were elucidated by a differential nuclear Overhauser effect (NOE) method and two-dimensional nuclear magnetic resonance (2D NMR). The stereostructures of two franoditerpenes, fibraurin and 6-hydroxyfibraurin, which had not been completely determined, were also elucidated.

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