Quarterly Journal of the Chemical Society of London, Volume 21 |
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Page 3580
... Ergochrysin A , Isoergochrysin A , and Ergoxanthin , and of Secalonic Acids A , B , C , and D By J. W. Hooper , W. Marlow , W. B. Whalley , " and ( in part ) A. D. Borthwick and R. Bowden , The School of Pharmacy , 29/39 Brunswick ...
... Ergochrysin A , Isoergochrysin A , and Ergoxanthin , and of Secalonic Acids A , B , C , and D By J. W. Hooper , W. Marlow , W. B. Whalley , " and ( in part ) A. D. Borthwick and R. Bowden , The School of Pharmacy , 29/39 Brunswick ...
Page 3586
... Ergochrysin A ( 1 ; R1 R2 = R $ H ) and Isoergochrysin A ( 2 ; R1 R2 R3 H ) .- ( a ) A solution of ergochrysin A ( 0 · 8 g . ) in acetone ( 50 ml . ) containing potassium carbonate ( 1.0 g . ) was refluxed for 2.5 hr . , cooled , and ...
... Ergochrysin A ( 1 ; R1 R2 = R $ H ) and Isoergochrysin A ( 2 ; R1 R2 R3 H ) .- ( a ) A solution of ergochrysin A ( 0 · 8 g . ) in acetone ( 50 ml . ) containing potassium carbonate ( 1.0 g . ) was refluxed for 2.5 hr . , cooled , and ...
Page 3587
... ergochrysin A ( 0-22 g . ) . = The Isomeric Tetra - O - methyl Ethers ( 7 ) and ( 8 ) of Ergo- chrysin A. - Methylation of 1,1 ' , 9 - tri - O - methylergochrysin A ( 1 ; R2 R3 = Me , R1 = H ) ( 0-5 g . ) with excess of diazo- methane ...
... ergochrysin A ( 0-22 g . ) . = The Isomeric Tetra - O - methyl Ethers ( 7 ) and ( 8 ) of Ergo- chrysin A. - Methylation of 1,1 ' , 9 - tri - O - methylergochrysin A ( 1 ; R2 R3 = Me , R1 = H ) ( 0-5 g . ) with excess of diazo- methane ...
Contents
Organic chemistry | 3513 |
Partially fluorinated heterocyclic compounds Part IX The syntheses of 4567tetrafluorobenzobfuran | 3516 |
Reactions of cyclohexadienes Part XII Some dienamines and dimethyl acetylenedicarboxylate | 3517 |
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acetic acid acetic anhydride acetone alkyl Amer amine aqueous ethanol aromatic atom benzene benzene-light petroleum benzyl boiling boron tribromide bromide Calc carbonyl CH₂ CHCl3 Chem chloroform chromatography cm¯¹ cm¹ CO₂H compound condensation cooled crystallised decomp derivatives diazomethane dimer dimethyl dimethylformamide dioxan dried elution enol ergochrysin ester ethanol ether ethyl acetate EtOH evaporated extracted filtered Found gave give heated hydrogen chloride i.r. spectrum identical isolated isomers ketone log ɛ mass spectra methyl methylene mixed m.p. mixture myricanone n.m.r. spectrum nitrogen Nujol obtained olefinic oxidation petroleum Ph Ph Ph PhCH₂ phenolic potassium prepared prisms protons pyridine quinuclidine reaction refluxed requires residue ring room temperature S)-sulphoxide sclerotiorin signals singlet sodium hydrogen carbonate sodium hydroxide solid solution solvent stirred structure sulphoxide synthesis triethylamine vacuo W. B. Whalley washed yellow needles yield