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Dive into the research topics where Charles M. Scrimgeour is active.

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Featured researches published by Charles M. Scrimgeour.


Chemistry and Physics of Lipids | 1977

Fatty acids. Part 50. 13C nuclear magnetic resonance studies of olefinic fatty acids and esters.

Frank D. Gunstone; M.R. Pollard; Charles M. Scrimgeour; H.S. Vedanayagam

Abstract The 13 C-NMR spectra of 48 cis alkenoic acids and esters (C 8 –C 20 ), 18 trans alkenoic acids and esters (C 9 –C 18 ), and 26 polyenoic acids and esters (C 18 –C 22 ) are reported and interpreted. The characteristic features of such spectra which permit structural assignments to be made are discussed.


Chemistry and Physics of Lipids | 1976

Fatty acids. Part 48. 13C nuclear magnetic resonance studies of acetylenic fatty acids

Frank D. Gunstone; M.R. Pollard; Charles M. Scrimgeour; N.W. Gilman; B.C. Holland

The 13C NMR spectra of thirty-seven alkynoic acids (C8-C18) and ten alkadiynoic acids (C18 and C20) are reported and interpreted. The influence of COOH, COOCH3, CH3, and C identical to C groups on the chemical shifts of nearby carbon atoms is assessed. These influences are largely additive so that available spectra are readily interpreted and the spectra of new compounds of this type can be predicted. These preliminary results indicate that 13C NMR spectroscopy should be of considerable value in the structural identification of acetylenic compounds.


Lipids | 1976

Fatty acids of the seed oils of alpineCruciferae and other alpine species

Charles M. Scrimgeour

A fewCruciferae seed oils do not contain erucic acid but are instead rich in linolenic acid. These oils are characteristic of alpine species, and the fatty acid composition of such oils may be an adaption to an alpine habitat.


Lipids | 1984

The purification of fatty acid methyl esters by high pressure liquid chromatography

Emanuele Bascetta; Frank D. Gunstone; Charles M. Scrimgeour

Procedures are described for the rapid purification of gram quantities of methyl oleate, methyl linoleate, methyl α- and γ-linolenates and methyl ricinoleate from appropriate natural oils by high pressure liquid chromatography (HPLC).


Journal of The Chemical Society, Chemical Communications | 1982

E.s.r. observation of pentadienyl and allyl radicals on hydrogen abstraction from unsaturated lipids

Emanuele Bascetta; Frank D. Gunstone; Charles M. Scrimgeour; John C. Walton

Hydrogen abstraction from linoleate and oleate gives rise to pentadienyl-and allyl-type radicals, respectively, Which have been observed by e. s. r. spectroscopy; delocalised radicals have also been observed from other lipid derivatives including triacylglycerols.


Chemistry and Physics of Lipids | 1977

Fatty acids, part 51. The long-chain oxo acids (argemonic acid) in Argemone mexicana seed oil

Frank D. Gunstone; Janet A. Holliday; Charles M. Scrimgeour

Abstract The crystalline material which separates from Argemone mexicana seed oil is a mixture of 9-and 11-oxo-octacosanoic and 11-oxotriacontanoic acids.


Chemistry and Physics of Lipids | 1975

Fatty acids, Part 44 The preparation of some long-chain hydroperoxides and t-butyl peroxides☆

F.D. Gunstone; E.G. Hammond; H.R. Schuler; Charles M. Scrimgeour; H.S. Vedanayagam

Abstract A number of long-chain hydroperoxides and t-butyl peroxides have been prepared — some of them for the first time — by the application of known procedures.


Chemistry and Physics of Lipids | 1984

Photosensitised oxidation of 12,13-epoxy-, 12-hydroxy-, 12-oxo- and 12-bromo-oleate

Emanuele Bascetta; Frank D. Gunstone; Charles M. Scrimgeour

Abstract The photosensitised oxidation of four substituted methyl oleates (12,13-epoxy, 12-hydroxy, 12-oxo, and 12-bromo) has been studied. The expected hydroperoxides were isolated by chromatography and indentified by spectroscopic procedure.


Journal of The Chemical Society, Chemical Communications | 1974

New procedure for converting unsaturated fatty acids to their nor-alcohols required as intermediates for the preparation of carboxy-labelled acids

Frank D. Gunstone; Charles M. Scrimgeour; Sumathi Vedanayagam

Oleic and linoleic acid have been decarboxylated to the corresponding C17 alcohols which can be oxidised to unsataurated C17 acids or reconverted into the 14C-carboxy-labelled C18 acids.


Journal of the Science of Food and Agriculture | 1978

The component acids of lipids from marine and freshwater species with special reference to furan-containing acids†

Frank D. Gunstone; R. Chakra Wijesundera; Charles M. Scrimgeour

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M.R. Pollard

University of St Andrews

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E.G. Hammond

University of St Andrews

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F.D. Gunstone

University of St Andrews

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H.R. Schuler

University of St Andrews

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John C. Walton

University of St Andrews

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