Radical anions of esters of carboxylic acids. Effects of structure and solvent on unimolecular fragmentations

1989 ◽  
Vol 111 (25) ◽  
pp. 9081-9089 ◽  
Author(s):  
John Masnovi
Keyword(s):  
Carboxylic Acids ◽  
Radical Anions ◽  
Esters Of Carboxylic Acids

Chemical Compounds from Femoral Gland Secretions of Male Iberian Rock Lizards, Lacerta monticola cyreni

2005 ◽  
Vol 60 (7-8) ◽  
pp. 632-636 ◽  
Author(s):  
Pilar López ◽  
José Martín
Keyword(s):  
Carboxylic Acids ◽  
Mass Spectra ◽  
Scent Marking ◽  
Health Condition ◽  
Lizard Species ◽  
Lipophilic Compounds ◽  
Esters Of Carboxylic Acids ◽  
The Social ◽  
High Interindividual Variability ◽  
Femoral Gland Secretions

In spite of the importance of chemoreception and chemical signals in the social organization of lizards, there are only a few studies examining the chemical composition of secretions of lizards used for scent marking. The secretion of the femoral glands of male Iberian rock lizards (Lacerta monticola cyreni) contains 44 lipophilic compounds, including several steroids (mainly cholesterol), and n-C6 to n-C22 carboxylic acids, and minor components such as esters of carboxylic acids, alcohols, squalene, and one lactone. These compounds were identified on the basis of mass spectra, obtained by GC-MS. Most lipids were detected in all individuals, although relative proportions of each chemical show a high interindividual variability. This variability might be related to the characteristics or physical and health condition of males and might be the basis of female choice based on chemical cues observed in this lizard species.

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