Cinnamoyl Derivatives Produced as Saponification Artifacts during Gas Chromatographic Analysis of Esterified Cinnamic Acid from Hoya Latices
Cinnamoyl Derivatives Produced as Saponification Artifacts during Gas Chromatographic Analysis of Esterified Cinnamic Acid from Hoya Latices
- Analytical BioChemistry, 71(2), p.533-539, 1976 .
Methyl 3-methoxy-3-phenylpropionate was formed as an artifact during saponification-methylation of a triterpene cinnamate mixture from the latex of Hoya australis. Saponification in ethanol or propanol produced the corresponding ethoxy and propoxy derivatives. Artifact-to-methyl cinnamate ratios were constant over a wide range of alkali concentrations tested. A gas chromatographic method is described for a quantitative analysis of cinnamic acid together with long-chain fatty acids from triterpene esters.
Methyl 3-methoxy-3-phenylpropionate was formed as an artifact during saponification-methylation of a triterpene cinnamate mixture from the latex of Hoya australis. Saponification in ethanol or propanol produced the corresponding ethoxy and propoxy derivatives. Artifact-to-methyl cinnamate ratios were constant over a wide range of alkali concentrations tested. A gas chromatographic method is described for a quantitative analysis of cinnamic acid together with long-chain fatty acids from triterpene esters.