Four cassane furanoditerpenes, designated bonducellpins
A (1), B (2), C (3), and D
(4), were
isolated from the roots of Caesalpinia bonduc. The
1H- and 13C-NMR spectra of all
four
compounds were completely assigned by using a combination of 2D NMR
experiments, which
included COSY, HMQC, HMBC, and NOESY sequences.
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Seven cassane diterpenes, including the known caesaldekarin A, were isolated from the roots of Caesalpinia bonduc, collected in Barbados. The 1H and 13C NMR spectra of all seven compounds were completely assigned by using a combination of 2D NMR experiments, which included 1H-1H COSY, HSQC, HMQC, and HMBC sequences.
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