Two new cyclic peptides, named as cyclogeobomptides A () and B () were isolated from the roots of C. Y. Wu. Compounds and are both made up of eight amino acids. The structures of them were established on the basis of the spectral data, including mass spectrometry, 2D NMR, and X-ray crystallography. Cyclogeobomptides A and B were proved to have obvious inhibitory activities against -glucosidase with the IC values of 26.00 and 19.16 M, respectively.
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