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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Separation and Identification of Phenolic Compounds of Extra Virgin Olive Oil from Olea europaea L. by HPLC-DAD-SPE-NMR/MS. Identification of a New Diastereoisomer of the Aldehydic Form of Oleuropein Aglycone
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Separation and Identification of Phenolic Compounds of Extra Virgin Olive Oil from Olea europaea L. by HPLC-DAD-SPE-NMR/MS. Identification of a New Diastereoisomer of the Aldehydic Form of Oleuropein Aglycone

机译：HPLC-DAD-SPE-NMR / MS分离与鉴定油橄榄中特级初榨橄榄油中的酚类化合物。鉴定一种新的油橄榄苦苷配糖苷醛形式的非对映异构体

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摘要

The phenolic fraction of a monovarietal extra virgin olive oil (EVOO) from Olea europaea L. var. Cornezuelo was studied by the hyphenated HPLC-DAD-SPE-NMR/MS techniques. This survey led to the identification of 25 main compounds. One was identified as a new diastereoisomer of the aldehydic form of oleuropein aglycone (AOA) and characterized by 1D and 2D NMR techniques. The relative configuration of this new AOA was determined as 5R*,8S*,9S* on the basis of the results obtained from the combination of NOE experiments and Monte Carlo conformational search calculations. Assuming, as for the described diastereoisomers, that the new AOA comes from the natural oleuropein aglycone (OA), the absolute configuration was proposed as 5S,8R,9R.
机译：来自油橄榄的单品种特级初榨橄榄油（EVOO）的酚类馏分。通过联用HPLC-DAD-SPE-NMR / MS技术研究了Cornezuelo。这项调查确定了25种主要化合物。一种被鉴定为橄榄苦苷苷元（AOA）的醛形式的新非对映异构体，并通过1D和2D NMR技术进行了表征。根据从NOE实验和Monte Carlo构象搜索计算的组合获得的结果，此新AOA的相对构型确定为5R *，8S *，9S *。对于所描述的非对映异构体，假设新的AOA来自天然橄榄苦苷糖苷配基（OA），其绝对构型被提议为5S，8R，9R。

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