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Spiroalkaloids and Coumarins from the Stem Bark of Pauridiantha callicarpoides
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Ostend K. Tatuedom
Veröffentlicht/Copyright:
2. Juni 2014
A new spiroalkaloid, 7-epi-javaniside (1), was isolated from the Cameroonian plant Pauridiantha callicarpoides, along with seven known compounds viz., javaniside (2), sweroside (3), hymexelsin (4), scopoletin (5), 7,7`-dihydroxy-6,6`-dimethoxy-8,8`-biscoumarin (6), 7,7`-dihydroxy-6,6`- dimethoxy-3,3`-biscoumarin (7), and 4-hydroxy-3-methoxybenzoic acid (8). The structures of the new alkaloid, as well as those of the known compounds, were elucidated by detailed spectroscopic analysis including 1D and 2D NMR and by comparison with the literature data for related compounds.
Graphical Abstract
Spiroalkaloids and Coumarins from the Stem Bark of Pauridiantha callicarpoides
Keywords: Pauridiantha callicarpoides; Rubiaceae; Coumarins; Javaniside; epi-Javaniside; Spiroalkaloids
Received: 2014-2-28
Published Online: 2014-6-2
Published in Print: 2014-6-1
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Schlagwörter für diesen Artikel
Pauridiantha callicarpoides;
Rubiaceae;
Coumarins;
Javaniside;
epi-Javaniside;
Spiroalkaloids
Artikel in diesem Heft
- Synthesis and Crystal Structure of a “High-temperature” Phase of Li[H2NC(O)NH], the Missing Alkali-Metal Ureate
- Strukturen von polaren Magnesiumorganylen: Synthese und Struktur von Basen-Addukten des Bis(pentamethylcyclopentadienyl)magnesiums
- The Mixed-valent Mercury(I/II) Compounds Hg3(HAsO4)2 and Hg6As2O10
- New Intermetallic Zinc Compounds with Ordering Variants of the KHg2 and LT-SrZn5 Type
- Effects of Metal Ions and N-Donor Ligands with Different Coordination Characters on the Construction of d10 Metal-organic Complexes with Selective Photocatalytic Activities
- Synthesis and Characterization of Novel Re(BIAN)(CO)3Cl Derivatives Including the First Example of a Water-soluble Tricarbonyl Rhenium(I) Complex with Bis(imino)acenaphthene Ligands
- Hydrothermal Synthesis and Crystal Structure of a One-dimensional Cobalt (II) Coordination Polymer with Two Organic Ligands
- Vinylsilylferrocenes and Ethynyl(vinyl)silylferrocenes. Synthesis, Multinuclear Magnetic Resonance Study and DFT Calculations
- One-pot Multi-component Synthesis of Mono- and Bis-indolylimidazole Derivatives Using Zn2+@KSF and Their Antibacterial Activity
- Catalyst-free, Solvent-promoted and Scalable Multicomponent Synthesis of 3-Aminoalkylated Indoles via a Mannich-type Reaction
- Synthesis and Reactions of New Chiral Linear Dipeptide Candidates Using Nalidixic Acid as Starting Material
- Synthesis and Characterization of Ammonium Acesulfamate
- Two Rare Hydroazulene-type Sesquiterpenes from the Roots of Aristolochia yunnanensis
- Spiroalkaloids and Coumarins from the Stem Bark of Pauridiantha callicarpoides
