Structure and absolute configuration of new acidic metabolites from Stachys ehrenbergii |
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| Authors: | Raffaella CincinelliLeonardo Scaglioni Nelly A. ArnoldSabrina Dallavalle |
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| Affiliation: | a DISMA, Dipartimento di Scienze Molecolari Agroalimentari, Università di Milano, via Celoria 2, 20133 Milano, Italy
b Université Saint Esprit, Kaslik (Beirut), Lebanon |
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| Abstract: | Two novel metabolites have been isolated from the aerial parts of Stachys ehrenberiigii. Their structures and stereochemistry were elucidated using a combination of 13C and 1H homo and heteronuclear 2D NMR experiments and mass analysis. The development of an enantioselective synthesis of 3-(2′-acetoxy-4-phenylbut-3′-enoylamino)propionic acid allowed to confirm the structure and assign the (R) absolute configuration at C-2′ of the natural product. |
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| Keywords: | Stachys Secondary metabolites Structure determination Biflavonoids Enantioselective synthesis |
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