Add time:07/15/2019         Source:sciencedirect.com

A guaianolide and a triterpene epoxide with a taraxasterene skeleton (ptiloepoxide) have been isolated from the aerial parts of Ptilostemmon gnaphaloides together with known compounds. The structure and relative stereochemistry of the triterpene epoxide were determined by high-field two-dimensional spectroscopy and DIFNOE experiments.

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