Malvalic acid
- 7 - (2- Octylcyclopropen -1-yl ) heptanoic acid
- Malvaliasäure
- Malvalinsäure
10.3 to 15 ° C
Template: Infobox chemical / molecular formula search available
Malvalic (English malvalic acid), scientifically 7 - (2 - Octylcyclopropen -1 -yl) heptanoic acid is a monocarboxylic acid with a cyclopropene ring in the carbon chain. The names Malvaliasäure or Malvalinsäure are common. The salts hot Malvalate. The compound was detected in many mallow family ( Malvaceae ). There are several other known occurrences, total malvalic occurs but rarely in the fatty acid spectrum of living creatures on.
Name and History
The malvalic 1956 mallow Malva verticillata isolated from Malva parviflora and. A little later we then proposed the ( English ) name malvalic acid and thus replaced the now obsolete name Halphen acid, which was derived from the Halphen reaction.
The German translation of the English term malvalic acid is mixed. The term variations malvalic, Malvaliasäure and Malvalinsäure occur with similar frequency. Full subordinated to find the naming Malvensäure.
Occurrence
Within the mallow ( Malvaceae ) malvalic is widely used as part of glycerides of seeds and leaves. Representing be mentioned a few examples better-known species. Thus we find malvalic to
Occurrence outside the mallow are rare. The two belonging to the gymnosperms and closely related to each other genera Gnetum and Welwitschia form such an exception - even in their seed pods come cyclopropenoide compounds before, including the malvalic. The used for human consumption liana Gnetum gnemon contains fat content of their seeds 38.6 % malvalic (albeit at a relatively low total fat content of 4% in the dried seeds).
Usually malvalic is associated with the chemically very similar Sterculiasäure.
Biological Significance
There are indications that malvalic enzymatic dehydrogenation processes inhibits the liver, although less strongly than the Sterculiasäure.
Analysis
Like the Sterculiasäure also shows the malvalic due to the Cyclopropenringes the Halphen reaction. For example, be demonstrated to more expensive oils such as corn oil with fewer machines an admixture of cotton seed oil, already a content of 10 ppm malvalic is sufficient for the color reaction.