Acetylenic Acids from Fats of the Olacaceae and Santalaceae. IV. The Occurrence of Octadeca-trans-11,trans-13-dien-9-ynoic Acid in Plant Lipids

1960 ◽  
Vol 13 (4) ◽  
pp. 488 ◽  
Author(s):  
HH Hatt ◽  
ACK Triffett ◽  
PC Wailes
Keyword(s):  
Ximenynic Acid ◽  
Plant Lipids ◽  
Polyunsaturated Acids ◽  
Acetylenic Acids

The somatic lipids (from root, stem, or leaves) of one species from each of the genera : Ximenia (Olacaceae), Santalum and Leptomeria (Santalaceae) have been examined and the presence of the following acids established : (i) octadeca-trans-13-ene-9,ll-diynoic acid, (ii) octadeca-trans-11,trans-13-dien-9-ynoic acid, (iii) octadeca-trans- 11-en-9-ynoic (ximenynic) acid, and (iv) an octadeca-trans-trans-dienediynoic acid, not yet fully identified. The occurrence of (ii) and (iv) in Nature has not been previously observed. The seed fat of Leptomeria aphylla R.Br. has been examined and found to contain some 20 per cent. of ximenynic acid as glycerides. No conjugated polyunsaturated acids were found in the lipids of the sole Australian representative of the closely related Belanophoraceae family.

Acetylenic acids from fats of Santalaceae and Olacaceae: Seed and root oils of Exocarpus cupressiformis Labill

1959 ◽  
Vol 12 (2) ◽  
pp. 190 ◽  
Author(s):  
HH Hatt ◽  
ACK Triffett ◽  
PC Wailes
Keyword(s):  
Fatty Acids ◽  
Related Species ◽  
Ximenynic Acid ◽  
Ximenia Americana ◽  
Acetylenic Acids

Octadec-trans-11-en-9-ynoic acid (ximenynic acid) forms over 60 per cent, of the acids present as glycerides in the seed fat of Exocarpus cupressiformis Labill. The roots of this tree contain an oil which is mainly a fat with octadec-trans-13-en-9,11-diynoic acid forming 89 per cent. of the fatty acids. These two acids are also major components respectively of the seed and root fats of the related species E. stricta R.Br. The root fat of Ximenia americana Linn. is rich in acetylenic acids.

scholarly journals Editorial: Proceedings of ASPL2019 - 8th Asian-Oceanian Symposium on Plant Lipids

2020 ◽  
Vol 11 ◽  
Author(s):  
Xue-Rong Zhou ◽  
Ikuo Nishida ◽  
Mi Chung Suh ◽  
Thomas Vanhercke
Keyword(s):  
Plant Lipids

Studies of the Metabolism of Polyunsaturated Acids by Short-term Experiments

1964 ◽  
Vol 84 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Joseph J. Rahm ◽  
Ralph T. Holman
Keyword(s):  
Short Term ◽  
Polyunsaturated Acids

Synthesis of biologically active heterocyclic compounds from allenic and acetylenic nitriles and related compounds

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Marthe Carine Djuidje Fotsing ◽  
Dieudonné Njamen ◽  
Zacharias Tanee Fomum ◽  
Derek Tantoh Ndinteh
Keyword(s):  
Michael Addition ◽  
Heterocyclic Compounds ◽  
Biological Activities ◽  
Biologically Active ◽  
Polycyclic Compounds ◽  
One Step ◽  
Pharmaceutical Properties ◽  
Related Compounds ◽  
Acetylenic Acids ◽  
The Michael Addition

Abstract Cyclic and polycyclic compounds containing moieties such as imidazole, pyrazole, isoxazole, thiazoline, oxazine, indole, benzothiazole and benzoxazole benzimidazole are prized molecules because of the various pharmaceutical properties that they display. This led Prof. Landor and co-workers to engage in the synthesis of several of them such as alkylimidazolenes, oxazolines, thiazolines, pyrimidopyrimidines, pyridylpyrazoles, benzoxazines, quinolines, pyrimidobenzimidazoles and pyrimidobenzothiazolones. This review covers the synthesis of biologically active heterocyclic compounds by the Michael addition and the double Michael addition of various amines and diamines on allenic nitriles, acetylenic nitriles, hydroxyacetylenic nitriles, acetylenic acids and acetylenic aldehydes. The heterocycles were obtained in one step reaction and in most cases, did not give side products. A brief discussion on the biological activities of some heterocycles is also provided.

SEASONAL AND REGIONAL VARIATIONS IN THE UNSATURATED ACIDS OF ALBERTA BUTTERFAT

1957 ◽  
Vol 37 (1) ◽  
pp. 1-7 ◽  
Author(s):  
F. W. Wood ◽  
W. Haab
Keyword(s):  
Oleic Acid ◽  
Regional Differences ◽  
Seasonal Fluctuations ◽  
Regional Variations ◽  
Grazing Season ◽  
Polyunsaturated Acids ◽  
Iodine Values ◽  
Summer Minimum

Monthly samples of butterfat taken during 1953–54 from creameries at Edmonton and Lethbridge showed regional and seasonal fluctuations of iodine values and content of monoenoic and conjugated and non-conjugated dienoic, trienoic and tetraenoic acids. The total unsaturated acids content, as measured by iodine values, was higher in the Edmonton butterfats and reached a maximum in September at the end of the grazing season, while the lower Lethbridge maximum occurred in May with but slightly declining values throughout the summer. Minimum values were recorded during November and December for both regions. Maximum oleic acid occurrence did not coincide with the peak of the grazing season. Most of the polyunsaturated acids varied seasonally but marked regional differences were not observed. In general the latter constituents occurred in amounts comparable to those reported elsewhere. With the exception of the non-conjugated dienoic acids, summer values were high and winter values low. Conjugated tetraenoic acids were found in all butterfats but in trace amounts only.

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