Refine
Year of publication
Document Type
- Article (105)
- Postprint (12)
- Doctoral Thesis (2)
- Part of Periodical (2)
- Monograph/Edited Volume (1)
- Other (1)
Keywords
- Leguminosae (3)
- Chitooligosaccharides (2)
- Juvenile hormone (2)
- (S)-Elatadihydrochalcone (1)
- (S)-Lupinifolin 4´-methyl ether (1)
- Amphiphiles (1)
- Antiplasmodial (1)
- Biological activity (1)
- Biosynthesis (1)
- Campylobacter jejuni (1)
- Cell culture (1)
- Chitolectin (1)
- Chitosan (1)
- Chitosanase (1)
- Chondrocytes (1)
- Corpora allata (1)
- Depolymerization (1)
- Derris trifoliata (1)
- ESI-MS (1)
- Enzyme (1)
- Enzyme inhibitor (1)
- Flavanone (1)
- Flavone (1)
- Fragmentation (1)
- GC-MS (1)
- Galactosides (1)
- Glycoconjugates (1)
- Glycopeptides (1)
- High affinity binding (1)
- In vitro (1)
- JH-III-specific carrier protein (1)
- Juvenile hormone analogue (1)
- Leptinotarsa decemlineata (1)
- Locust (1)
- Lupinifolin (1)
- Lysozyme (1)
- N-acetyldopamine (1)
- N-azobenzylchitosan (1)
- O-methyltransferase (1)
- Oligosaccharides (1)
- Orthoptera (1)
- Pyrimidines (1)
- Rheumatoid arthritis (1)
- Seedpods (1)
- Sequence analysis (1)
- SnAr reaction (1)
- Stem (1)
- Steroid esters (1)
- TBTU (1)
- Tandem mass spectrometry (1)
- Tephrosia elata (1)
- Tephrosia purpurea (1)
- Terpurinflavone (1)
- YKL-40 (1)
- chitosan (1)
- enantioselectivity (1)
- inhibition AChE (1)
- isomer resolution (1)
- juvenile hormone biosynthesis (1)
- mitsunobu (1)
- oligosaccharides (1)
- polarizable drift gases (1)
- sclerotization (1)
- sinefungin (1)
- tanning agents (1)
- traveling wave ion mobility mass spectrometry (1)
- tyrosinase; o-quinones (1)
- β-Hydroxydihydrochalcone (1)
7a-O-methyldeguelol, a modified rotenoid with an open ring-C, from the roots of Derris trifoloata
(2005)
From the acetone extract of the roots of Derris trifoliata an isollavonoid derivative, named 7a-O- methyldeguelol, a modified rotenoid with an open ring-C, representing a new sub-class of isollavonoids (the sub-class is here named as rotenoloid), was isolated and characterised. In addition, the known rotenoids, rotenone, deguelin and alpha-toxicarol, were identified. The structures were determined on the basis of spectroscopic evidence. Rotenone and deguelin were identified as the larvicidal principles of the acetone extract of the roots of Derris trifoliata. (c) 2005 Elsevier Ltd. All rights reserved
A new pterocarpan (named 8-methoxyneorautenol) was isolated from the acetone ext. of the root bark of Erythrina abyssinica. In addn., the known isoflavonoid derivs. eryvarin L, erycristagallin and shinpterocarpin were identified for the first time from the roots of this plant. The structures were detd. on the basis of spectroscopic evidence. The new compd. showed selective antimicrobial activity against Trichophyton mentagrophytes. The acetone ext. of the root bark of E. abyssinica showed radical scavenging activity towards 2,2-diphenyl-1-picrylhydrazyl radical (DPPH). The pterocarpenes, 3-hydroxy-9-methoxy-10-(3,3-dimethylallyl)pterocarpene and erycristagallin, were the most active constituents of the roots of this plant and showing dose-dependent activities similar to that of the std. quercetin. [on SciFinder (R)]