Journal of the Chemical SocietyThe Society., 1953 |
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Page 457
... Polyporenic Acid A. The By R. G. CURTIS , SIR IAN HEILBRON , E. R. H. JONES , and GILBERT F. WOODS . Polyporenic acid A , a diethenoid dihydroxy - monocarboxylic sapogenin from the birch - tree fungus Polyporus betulinus Fr. , has been ...
... Polyporenic Acid A. The By R. G. CURTIS , SIR IAN HEILBRON , E. R. H. JONES , and GILBERT F. WOODS . Polyporenic acid A , a diethenoid dihydroxy - monocarboxylic sapogenin from the birch - tree fungus Polyporus betulinus Fr. , has been ...
Page 460
... polyporenic acid A and its derivatives shows that the process of decarboxylation does not cause any fundamental change in the polyporenic acid A skeleton ( see , however , following paper ) . EXPERIMENTAL Rotations were determined in ...
... polyporenic acid A and its derivatives shows that the process of decarboxylation does not cause any fundamental change in the polyporenic acid A skeleton ( see , however , following paper ) . EXPERIMENTAL Rotations were determined in ...
Page 466
... polyporenic acid A is analogous to that of morolic acid except that in the former the reacting centres are almost certainly located in a side - chain . The infra - red spectrum of the decarboxy - compound displays a band of medium ...
... polyporenic acid A is analogous to that of morolic acid except that in the former the reacting centres are almost certainly located in a side - chain . The infra - red spectrum of the decarboxy - compound displays a band of medium ...
Contents
Internuclear Cyclisation Part VII The Synthesis of Some NitroNmethyl | 1 |
Synthesis of Polymethylnaphthalenes | 8 |
Kestose a Trisaccharide formed from Sucrose by Yeast Invertase | 24 |
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absorption acetic acid acetic anhydride acetone acetyl acidified added alcohol alkaline aluminium aluminium chloride Amer amine aqueous sodium atom benzene boiling bromine Calc carbon Chem Chim chloroform chromatographed colourless compound concentrated cooled crystallised crystals D.Sc decomp derivatives dilute dissolved distilled dried elution equiv ester ethanol ethyl acetate ethylene evaporated extracted with ether filtered filtrate formed Found fraction gave give m. p. H₂O heated hydrochloric acid hydrogen chloride hydrogen sulphate hydrolysis hydroxyl infra-red iodide isolated ketone light petroleum b. p. liquid lithium aluminium hydride m. p. and mixed method mixed m. p. mixture mole obtained oxidation oxidised pale yellow phosphorochloridate polyporenic potassium hydroxide precipitate prepared prisms pyridine reaction reduced refluxed requires residue room temperature salt sodium hydroxide solid soluble solution solvent spectra sulphuric acid ultra-violet washed yellow needles yield