New lupan-type triterpenoids
-
Pierre Mkounga
,
Hermine L.D. Maza
Abstract
Three new lupan-type triterpernoid derivatives, namely globimetulin A (1), B (2) and C (3), were isolated from the shoot of Globimetula dinklagei (Loranthaceae), a hemiparasitic plant growing on Manihot esculenta, along with five known compounds: friedelin (4), friedelan-3-ol (5), 28-hydroxyfriedelin (6), 4-hydroxy-3,5-dimethoxybenzoic acid (7) and (1R,5S,7S)-7-[2-(4-hydroxyphenyl)ethyl]-2,6-dioxabicyclo[3.3.1]nonan-3-one (8). The structures of the new compounds were elucidated by detailed analyses of their MS, IR, 1D and 2D NMR spectral data and chemical evidence. Some of these compounds were evaluated in vitro for their antimicrobial activities against a wide range of microorganisms, but none of them exhibited noticeable activity.
Acknowledgment
The authors are grateful to MIF (Matsumae International Foundation) for the award of a 6-month fellowship (June–December 2013) to M.P.
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©2016 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Research Articles
- Seasonal variation of gastroprotective terpenoids in Maytenus robusta (Celastraceae) quantified by gas chromatography-flame ionization detection (GC-FID)
- Plicosepalin A, a new antioxidant catechin–gallic acid derivative of inositol from the mistletoe Plicosepalus curviflorus
- New lupan-type triterpenoids
- Penicilloitins A and B, new antimicrobial fatty acid esters from a marine endophytic Penicillium species
- Anti-acetylcholinesterase activity of essential oils and their major constituents from four Ocimum species
- The chemical composition, antimicrobial, and antioxidant activities of Pycnocycla spinosa and Pycnocyla flabellifolia essential oils
- Biological evaluation and docking studies of some benzoxazole derivatives as inhibitors of acetylcholinesterase and butyrylcholinesterase
- LC/ESI-MS/MS profiling of Ulmus parvifolia extracts and evaluation of its anti-inflammatory, cytotoxic, and antioxidant activities
- Antiproliferative effect of synthetic cyclic imides (methylphtalimides, carboxylic acid phtalimides and itaconimides) against human cancer cell lines
- Anti-inflammatory activity of highly oxygenated terpenoids from Achillea biebersteinii Afan
- Annual Reviewer Acknowledgement
- Reviewer acknowledgement Biosciences – Zeitschrift für Naturforschung C, volume 71 (2016)
Articles in the same Issue
- Frontmatter
- Research Articles
- Seasonal variation of gastroprotective terpenoids in Maytenus robusta (Celastraceae) quantified by gas chromatography-flame ionization detection (GC-FID)
- Plicosepalin A, a new antioxidant catechin–gallic acid derivative of inositol from the mistletoe Plicosepalus curviflorus
- New lupan-type triterpenoids
- Penicilloitins A and B, new antimicrobial fatty acid esters from a marine endophytic Penicillium species
- Anti-acetylcholinesterase activity of essential oils and their major constituents from four Ocimum species
- The chemical composition, antimicrobial, and antioxidant activities of Pycnocycla spinosa and Pycnocyla flabellifolia essential oils
- Biological evaluation and docking studies of some benzoxazole derivatives as inhibitors of acetylcholinesterase and butyrylcholinesterase
- LC/ESI-MS/MS profiling of Ulmus parvifolia extracts and evaluation of its anti-inflammatory, cytotoxic, and antioxidant activities
- Antiproliferative effect of synthetic cyclic imides (methylphtalimides, carboxylic acid phtalimides and itaconimides) against human cancer cell lines
- Anti-inflammatory activity of highly oxygenated terpenoids from Achillea biebersteinii Afan
- Annual Reviewer Acknowledgement
- Reviewer acknowledgement Biosciences – Zeitschrift für Naturforschung C, volume 71 (2016)
