Structural Revision of Cephalosporolide J and Bassianolone
2014
Song, Liyan | Lee, Ka-Ho | Lin, Zhenxiang | Tong, Rongbiao
The NMR spectra for three “natural” products: cephalosporolide C (Ces-C), cephalosporolide J (Ces-J), and bassianolone were found to be identical, and we proposed that Ces-C was the correct structure for the reported spectra. The first total synthesis of the proposed structure for Ces-J was achieved to support our structural revision for Ces-J. Chemical transformations of bassianolone and computational prediction of ¹³C NMR spectra allowed us to conclude that Ces-C was the correct structure for bassianolone. Our synthetic and computational studies suggested that these “different” natural products Ces-C, Ces-J, and bassianolone have the same structure: Ces-C.
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