Alpha-pyrones and a 2(5H)-furanone from Hyptis pectinata |
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| Authors: | Boalino Dionne M Connolly Joseph D McLean Stewart Reynolds William F Tinto Winston F |
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| Affiliation: | Department of Biological and Chemical Sciences, University of the West Indies, Cave Hill Campus, PO Box 64, Bridgetown, Barbados. |
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| Abstract: | Three pyrones and a 2(5H)-furanone, designated pectinolides D-G, have been isolated from the dichloromethane extract of Hyptis pectinata. The metabolites were characterized on the basis of 1D and 2D NMR spectroscopic techniques. The pyrones were identified as 6S-[3S,6S-(diacetoxy)-5R-hydroxy-1Z-heptenyl]-5S-hydroxy-5,6-dihydro-2H-pyran-2-one (1)- pectinolide D, 6S-[3S,5R,6S-(triacetoxy)-1Z-heptenyl]-5S-acetoxy-5,6-dihydro-2H-pyran-2-one (2)- pectinolide E and 6S-[3S,5R,6S-(triacetoxy)-1Z-heptenyl]-5S-acetoxy-4R-methoxy-3,4,5,6-tetrahydro-4H pyran-2-one (3)- pectinolide F. The furanone was identified as [2'Z,5(1')Z] 5-(4'S,6'R,7'S-triacetoxy-2-octenylidene)-2(5H)-furanone (4)-pectinolide G. |
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| Keywords: | Hyptis pectinata Lamiaceae 5,6-Dihydro-α-pyrones α-Pyrones 2(5H)-Furanone Pectinolides |
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