[Isolation and structure identification of C-25 epimers of inokosterone from Achyranthes bidentata Blume].

摘要: Aim To isolate C-25 epimers of inokosterone from Achyranthes bidentata Blume. and identify their structures. Methods separate by using various kinds chromatography methods structures on basis spectral analysis chemical method. Results Three compounds were isolated established as 25S-inokosterone (1), 25R-inokosterone (2) ecdysterone (3). Conclusion Compounds 1 2 are new configuration isomers Blume., absolute configurations elucidated at the first time, 13CNMR data reported for time.