Two sapogenins from Tribulus terrestris
1998
Xu, Y.X. | Chen, H.S. | Liu, W.Y. | Gu, Z.B. | Liang, H.Q.
Studies on the constituents of Tribulus terrestris L. led to the isolation of two new steroidal sapogenins, (5 alpha, 25R)-spirostan-3,6,12-trione and 25R-spirostan-4-ene-3,6,12-trione, together with five known steroidal sapogenins, tigogenin, hecogenin, gitogenin, hecogenone, and 25R-spirostan-4-ene-3,12-dione. The structures of the new sapogenins were established on the basis of chemical and spectroscopic evidence, especially 2D NMR spectroscopic techniques.
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