Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Betaenone_B> ?p ?o }
- Betaenone_B abstract "Betaenone B, like other betaenones (A and C), is a secondary metabolite isolated from the fungus Pleospora betae, a plant pathogen. Its phytotoxic properties have been shown to cause sugar beet leaf spots, which is characterized by black, pycnidia containing, concentric circles eventually leading to necrosis of the leaf tissue. Of the seven phytotoxins isolated in fungal leaf spots from sugar beet (Beta vulgaris), betaenone B showed the least amount of phytotoxicity showing only 8% inhibition of growth while betaenone A and C showed 73% and 89% growth inhibition, respectively. Betaenone B is therefore not considered toxic to the plant, but will produce leaf spots when present in high concentrations (0.33 µg/µL). While the mechanism of action of betaenone B has yet to be elucidated, betaenone C has been shown to inhibit RNA and protein synthesis. Most of the major work on betaenone B, including the initial structure elucidation of betaenone A, B and C as well as the partial elucidation mechanism of biosynthesis, was presented in three short papers published between 1983–88. The compounds were found to inhibit a variety of protein kinases signifying a possible role in cancer treatment.Molecular structures of betaenone A, B and C.The structure of betaenone B was determined via nuclear magnetic resonance spectroscopy (NMR), CD and optical rotatory dispersion (ORD) measurements. While it was also shown that that betaenone B could be converted to betaenone A by oxidation by PCC followed by exposure to base, it wasn't until 1988 that a semi-complete total synthesis was reported. Using 1,3-butadiene as a starting material, a stereoselective synthesis of (+/-)-4-de(3'-hydroxypropionyl) betanenone B was achieved in a 24-step synthesis. Bioactivity of this synthetic product was not tested and no further work on total synthesis of betaenones has been published since.While a complete de novo synthesis of betaenone B has yet to be reported, Daniel Pratt and Paul Hopkins in 1988 proposed a method for synthesizing a precursor of betaenone B from methoxybenzoquinone and 1,3-butadiene via a Diels–Alder reaction and Claisen chemistry.".
- Betaenone_B atcPrefix "none".
- Betaenone_B casNumber "85269-23-4".
- Betaenone_B iupacName "(2S,3R,4R,4aS,5R,7R,8aS)-3-sec-butyl-2,7-dihydroxy-4-(3-hydroxypropanoyl)-2,4,5,7-tetramethyloctahydronaphthalen-1(2H)-one".
- Betaenone_B pubchem "158750".
- Betaenone_B thumbnail Betaenone_B.svg?width=300.
- Betaenone_B wikiPageID "23220304".
- Betaenone_B wikiPageLength "7895".
- Betaenone_B wikiPageOutDegree "44".
- Betaenone_B wikiPageRevisionID "584138470".
- Betaenone_B wikiPageWikiLink 1,3-Butadiene.
- Betaenone_B wikiPageWikiLink 1,3-butadiene.
- Betaenone_B wikiPageWikiLink Acetate.
- Betaenone_B wikiPageWikiLink Acetyl-CoA.
- Betaenone_B wikiPageWikiLink Betaenone.
- Betaenone_B wikiPageWikiLink Betaenone_A.
- Betaenone_B wikiPageWikiLink Betaenone_C.
- Betaenone_B wikiPageWikiLink Bioactivity.
- Betaenone_B wikiPageWikiLink Biological_activity.
- Betaenone_B wikiPageWikiLink Biosynthesis.
- Betaenone_B wikiPageWikiLink Cancer_treatment.
- Betaenone_B wikiPageWikiLink Category:Alcohols.
- Betaenone_B wikiPageWikiLink Category:Ketones.
- Betaenone_B wikiPageWikiLink Category:Tetralins.
- Betaenone_B wikiPageWikiLink Claisen_chemistry.
- Betaenone_B wikiPageWikiLink Concentric.
- Betaenone_B wikiPageWikiLink Concentric_circle.
- Betaenone_B wikiPageWikiLink Cyclic_compound.
- Betaenone_B wikiPageWikiLink Cyclization.
- Betaenone_B wikiPageWikiLink Cytochrome_P-450.
- Betaenone_B wikiPageWikiLink Cytochrome_P450.
- Betaenone_B wikiPageWikiLink De_novo_synthesis.
- Betaenone_B wikiPageWikiLink Diels–Alder_reaction.
- Betaenone_B wikiPageWikiLink Enzyme.
- Betaenone_B wikiPageWikiLink Fungus.
- Betaenone_B wikiPageWikiLink Growth_inhibition.
- Betaenone_B wikiPageWikiLink Human_body.
- Betaenone_B wikiPageWikiLink Human_physiology.
- Betaenone_B wikiPageWikiLink Leaf_spot.
- Betaenone_B wikiPageWikiLink Management_of_cancer.
- Betaenone_B wikiPageWikiLink Methoxybenzoquinone.
- Betaenone_B wikiPageWikiLink Methylation.
- Betaenone_B wikiPageWikiLink Necrosis.
- Betaenone_B wikiPageWikiLink Nuclear_magnetic_resonance_spectroscopy.
- Betaenone_B wikiPageWikiLink Optical_rotatory_dispersion.
- Betaenone_B wikiPageWikiLink Oxidation.
- Betaenone_B wikiPageWikiLink Phytotoxic.
- Betaenone_B wikiPageWikiLink Phytotoxin.
- Betaenone_B wikiPageWikiLink Pleospora_betae.
- Betaenone_B wikiPageWikiLink Polyketide.
- Betaenone_B wikiPageWikiLink Propionate.
- Betaenone_B wikiPageWikiLink Protein.
- Betaenone_B wikiPageWikiLink Protein_kinase.
- Betaenone_B wikiPageWikiLink Protein_synthesis.
- Betaenone_B wikiPageWikiLink Pycnidia.
- Betaenone_B wikiPageWikiLink Pycnidium.
- Betaenone_B wikiPageWikiLink RNA.
- Betaenone_B wikiPageWikiLink Redox.
- Betaenone_B wikiPageWikiLink S-Adenosyl_methionine.
- Betaenone_B wikiPageWikiLink S-adenosyl_methionine.
- Betaenone_B wikiPageWikiLink Secondary_metabolite.
- Betaenone_B wikiPageWikiLink Stereoselective.
- Betaenone_B wikiPageWikiLink Stereoselectivity.
- Betaenone_B wikiPageWikiLink Sugar_beet.
- Betaenone_B wikiPageWikiLink File:Betaenone_ABC_skeletal.svg.
- Betaenone_B wikiPageWikiLink File:Betaenone_B_synthesis.svg.
- Betaenone_B wikiPageWikiLinkText "B".
- Betaenone_B wikiPageWikiLinkText "Betaenone B".
- Betaenone_B atcPrefix "none".
- Betaenone_B c "21".
- Betaenone_B casNumber "85269".
- Betaenone_B chemspiderid "139645".
- Betaenone_B date "December 2011".
- Betaenone_B h "36".
- Betaenone_B hasPhotoCollection Betaenone_B.
- Betaenone_B inchi "1".
- Betaenone_B inchikey "PUZNAAVWFXQUDM-HBKHSIGZBL".
- Betaenone_B iupacName "-3".
- Betaenone_B meltingHigh "108".
- Betaenone_B meltingPoint "103.5".
- Betaenone_B molecularWeight "368.508".
- Betaenone_B o "5".
- Betaenone_B pubchem "158750".
- Betaenone_B reason "Claisen condensation or rearrangement, or ?".
- Betaenone_B smiles "O=C[C@]2C".
- Betaenone_B stdinchi "1".
- Betaenone_B stdinchikey "PUZNAAVWFXQUDM-HBKHSIGZSA-N".
- Betaenone_B verifiedrevid "462331618".
- Betaenone_B watchedfields "changed".
- Betaenone_B width "250".
- Betaenone_B wikiPageUsesTemplate Template:Clarify.
- Betaenone_B wikiPageUsesTemplate Template:Drugbox.
- Betaenone_B wikiPageUsesTemplate Template:Reflist.
- Betaenone_B subject Category:Alcohols.
- Betaenone_B subject Category:Ketones.
- Betaenone_B subject Category:Tetralins.
- Betaenone_B hypernym Metabolite.
- Betaenone_B type Article.
- Betaenone_B type ChemicalCompound.
- Betaenone_B type ChemicalSubstance.