Journal of the Chemical SocietyThe Society., 1964 "Titles of chemical papers in British and foreign journals" included in Quarterly journal, v. 1-12. |
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Page 73
Chemical Society (Great Britain). isomer from the irradiation product of tetra - acetyldihydroerythroaphin - fb was reported . This new isomer was converted by hydrolysis and oxidation into a new erythroaphin , which had not been ...
Chemical Society (Great Britain). isomer from the irradiation product of tetra - acetyldihydroerythroaphin - fb was reported . This new isomer was converted by hydrolysis and oxidation into a new erythroaphin , which had not been ...
Page 86
... isomer A leads directly to the correct configuration at C ; isomer B can yield only the unstable system ( X ) . ( The possibility that the latter system epimerises at some intermediate stage to the more stable one cannot be excluded ...
... isomer A leads directly to the correct configuration at C ; isomer B can yield only the unstable system ( X ) . ( The possibility that the latter system epimerises at some intermediate stage to the more stable one cannot be excluded ...
Page 746
... isomer results obtained by the two methods agree quite well . Separate experiments in darkened and clear vessels ... Isomer cis - Isomer trans - Isomer 101k 101k [ HCIO1 ] ( moles 1. - 1 ) 104k ( sec . - 1 ) ( 1. mole - 1 sec . - 1 ) ...
... isomer results obtained by the two methods agree quite well . Separate experiments in darkened and clear vessels ... Isomer cis - Isomer trans - Isomer 101k 101k [ HCIO1 ] ( moles 1. - 1 ) 104k ( sec . - 1 ) ( 1. mole - 1 sec . - 1 ) ...
Contents
By J K P ARIYARATNE and M L H GREEN | 1 |
The biosynthesis of fungal metabolites | 16 |
Monofluoroisoquinolines | 22 |
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absorption acetic acid acetic anhydride alkaline aluminium chloride Amer amine anhydride aphins aqueous aromatic atoms band benzene bond bromide Calc carbon Chem chloride chloroform chromatography cm.¹ complex compound concentration coupling constants crystallised crystals decomp decomposition derivatives diazomethane dilute dimethyl dioxan dried Elution equation erythroaphin-fb erythroaphins ester ethanol ether ethyl ethyl acetate evaporated EXPERIMENTAL extracted formation formed Found fraction gave halides hydrochloric acid hydrogen hydrolysis infrared infrared spectra iodide irradiated isomer ligand light petroleum m. p. and mixed maltose mixed m. p. mixture mole molecule mµ log ɛ nitrogen nuclear magnetic resonance obtained oxidation oxygen phenyl piperidine potassium prepared protoaphin protoaphin-fb proton pyridine quinone reaction recrystallised refluxed requires residue ring room temperature sample similar sodium hydroxide solution solvent spectrum structure substituted Table ultraviolet values washed yellow yield