24
B. Schmidt
Chart 2 Originally published structures of stagonolides and curvulide A
fungus Curvularia sp. [79]. It is mentioned in this context because it is the C-4–C5-epoxide of stagonolide E (88) or its C-6-epimer and therefore structurally related
(Chart 2).
The original structural assignment of stagonolide A (85) was based on a combination of HRMS, IR spectroscopy, 1D- and 2D-NMR methods and chemical modification [87]: reduction of stagonolide A (85) with NaBH 4 proceeds highly diastereoselectively and furnished a compound that was in all regards identical with herbarumin
B. Schmidt
Chart 2 Originally published structures of stagonolides and curvulide A
fungus Curvularia sp. [79]. It is mentioned in this context because it is the C-4–C5-epoxide of stagonolide E (88) or its C-6-epimer and therefore structurally related
(Chart 2).
The original structural assignment of stagonolide A (85) was based on a combination of HRMS, IR spectroscopy, 1D- and 2D-NMR methods and chemical modification [87]: reduction of stagonolide A (85) with NaBH 4 proceeds highly diastereoselectively and furnished a compound that was in all regards identical with herbarumin