Argeloside A and B, two novel 14,15-secopregnane glycosides from Solenostemma argel |
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| Authors: | Alberto PlazaGiuseppe Bifulco Arafa I. HamedCosimo Pizza Sonia Piacente |
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| Affiliation: | a Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, via Ponte Don Melillo, 84084 Fisciano, Salerno, Italy
b Faculty of Science, South Valley University, Aswan 81528, Egypt |
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| Abstract: | Argeloside A and B, two novel 14,15-secopregnane glycosides characterized by the presence of two hemiketal functions involved in two five-membered rings, were isolated from Solenostemma argel fruits. Their structures have been established by ESIMS and NMR experiments. In particular the relative configuration of the molecules has been defined by combining the available NMR data with quantum chemical calculations of the geometries and 13C chemical shifts. |
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| Keywords: | Solenostemma argel 14,15-secopregnane glycosides NMR GIAO DFT calculations |
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