- Synthesis of the ω6 (5z,8z)-tetradecadienoic and (7z,10z)-hexadecadienoic polyene fatty acids
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An approach using acetylenes was used and optimized to synthesize rare natural ω6 polyene fatty acids. The key synthetic step was cross-coupling of a propargyl derivative with a terminal acetylene in the presence of equimolar amounts of Cu(I).
- Golovanov,Ganina,Groza,Eremin,Myagkova
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- SPECIFICITY OF THE ENZYME SYSTEM PRODUCING LONG CHAIN ALDEHYDES IN THE GREEN ALGA, ULVA PERTUSA
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The greater part of the enzyme activity producing long chain aldehydes (LCA) such as (8Z)-heptadecanal, (8Z,11Z)-heptadecadienal, (8Z,11Z,14Z)-heptadecatrienal was found in the 4000 g precipitate of homogenates of the green alga, Ulva pertusa.The LCA-forming activity was readily solubilized from the precipitate by addition of 0.2percent Triton X-100.The solubilized LCA-forming activity showed an optimum pH in the range 8.5-9.5. α-Linolenic acid was a very good substrate, but γ-linolenic acid was a poor substrate for the activity.Linoleic acid was the best substrate of an entire series of (ζ6Z, ζ9Z)-dienoic acids, in which the chain length varied from C13 to C20.Key Word Index - Ulva pertusa; green alga; odour; aldehydes; fatty acids; substrate specificity.
- Kajiwara, Tadahiko,Yoshikawa, Hiroshi,Matsui, Kenji,Hatanaka, Akikazu,Kawai, Tetsuo
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p. 407 - 410
(2007/10/02)
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