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thinicola/pterocarpan
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Bioassay-guided fractionation of pterocarpans from roots of Harpalyce brasiliana Benth.
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Pterocarpans, a special kind of isoflavonoids possessing two contiguous benzofuran and benzopyran rings, have been reported as possessing several biological activities. In order to isolate and identify the active principles possibly responsible for the stronger activity of the EtOH extract from
Complete NMR data assignments for novel pterocarpans from Harpalyce brasiliana.
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Log In / Enskri
A NMR study of two new pterocarpans isolated from the roots of Harpalyce brasiliana is described. In addition to 1D NMR, 2D shift-correlated NMR pulse sequences ((1)H-(1)H-COSY, HSQC and HMBC) were used to establish the structures, and unambiguously perform the (1)H and (13)C chemical shift
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