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13 C CPMAS NMR spectra of four triterpene glycosides: cimigenol xyloside (1), 26-deoxyactein (2), cimicifugoside H-1 (3) and 24-acethylhydroshengmanol xyloside (4) were recorded and analyzed to characterize their solid-state structure. Experimental data were supported by theoretical calculations of NMR shielding constants with the GIAO/6-31G**-su1 approach. A number of methods for the conformational...
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