Antiviral C-25 Epimers of 26-Acetoxy Steroids from the South China Sea Gorgonian <i>Echinogorgia rebekka</i>
作者:Fei Cao、Chang-Lun Shao、Min Chen、Meng-Qi Zhang、Kai-Xia Xu、Hong Meng、Chang-Yun Wang
DOI:10.1021/np500252q
日期:2014.6.27
Four new steroids with an acetoxy linked at the end of the side chain, echrebsteroids A–D (1–4) were obtained from the South China Sea gorgonianEchinogorgia rebekka. The absolute configurations of 1–3 were determined using the modified Mosher’s method on the hydrolysis products. The isolation of the pair of epimers (2 and 3) represents the first reported separation of C-25 epimers of 26-acetoxy steroids