Isolation, structural elucidation of new phytoecdysteroids from Ajuga decumbens Thunb
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Olagoke Zacchaeus Olatunde1, Jianping Yong2, Canzhong Lu3
1Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, China; University of Chinese Academy of Sciences, Beijing, China.
Steroids
|July 17, 2022
Abstract:
Five new phytoecdysteroids (1, 2, 3, 4, and 5) were isolated from Ajuga decumbens Thunb. planted at Pingtan island of Fujian Province. Their structures were elucidated by NMR(1H NMR, 13C NMR, DEPT, HMBC, HSQC, 1H-1H COSY, ROESY), and HRESIMS. Especially, compound 2 is the epimer of Cyasterone, which was directly confirmed using single crystal X-ray diffraction analysis.
