A halogenated coumarin from Ficus krishnae
-
Mehtab Parveen
,
Akhtar Ali
Abstract
Petroleum ether-benzene extract of the leaves of Ficus krishnae afforded a novel halogenated 2H-chromen-2-one named 3-chloro-7-methoxy-4-methyl-chromen-2-one. Its structure was established on basis of chemical and physical evidence (IR, 1H NMR, and MS data) as well as on X-ray crystallographic studies.
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© 2011 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- 5th conference on membrane science and technology PERMEA 2010
- A procedure for the determination of dichloromethane and tetrachloroethene in water using pervaporation and gas chromatography
- Modeling of diffusive transport of benzoic acid through a liquid membrane
- Comparison of ceramic capillary membrane and ceramic tubular membrane with inserted static mixer
- New approach to regeneration of an ionic liquid containing solvent by molecular distillation
- Mass-transfer in pertraction of butyric acid by phosphonium ionic liquids and dodecane
- Determination of carbon in solidified sodium coolant using new ICP-OES methods
- Interpretation of interactions of halogenated hydrocarbons with modified silica adsorbent coated with 3-benzylketoimine group silane
- Adaptive nonlinear control of a continuous stirred tank reactor
- Anaerobic baffled reactor treatment of biodiesel-processing wastewater with high strength of methanol and glycerol: reactor performance and biogas production
- Analysis of streptolydigin degradation and conversion in cultural supernatants of Streptomyces lydicus AS 4.2501
- Spectroscopic and magnetic evidence of coordination properties of bioactive diethyl (pyridin-4-ylmethyl)phosphate ligand with chloride transition-metal ions
- Microstructure and properties of polyhydroxybutyrate-calcium phosphate cement composites
- Intercalation of basic amino acids into layered zirconium proline-N-methylphosphonate phosphate
- Effect of sol-gel preparation method on particle morphology in pure and nanocomposite PZT thin films
- Synthesis, spectroscopic and configurational study, and ab initio calculations of new diazaphospholanes
- Synthesis and in vitro antimicrobial activity of new 3-(2-morpholinoquinolin-3-yl) substituted acrylonitrile and propanenitrile derivatives
- Silicon-based thiourea-mediated and microwave-assisted thio-Michael addition under solvent-free reaction conditions
- One-pot synthesis of 2-amino-3-cyano-4-arylsubstituted tetrahydrobenzo[b]pyrans catalysed by silica gel-supported polyphosphoric acid (PPA-SiO2) as an efficient and reusable catalyst
- Comparison and optimisation of biodiesel production from Jatropha curcas oil using supercritical methyl acetate and methanol
- Determination of photoredox properties of individual kinetically labile complexes in equilibrium systems
- A halogenated coumarin from Ficus krishnae
- 4β-Isocyanopodophyllotoxins: valuable precursors for the synthesis of new podophyllotoxin analogues
- Environmentally benign one-pot synthesis and antimicrobial activity of 1-methyl-2,6-diarylpiperidin-4-ones
