Journal of Tropical Oceanography ›› 2019, Vol. 38 ›› Issue (4): 64-69.doi: 10.11978/2018125CSTR: 32234.14.2018125

• Marine Biology • Previous Articles     Next Articles

Research on Sterols from Leptogorgia rigida

Xiji XIAO,Yun DENG,Lufeng XIE,Qi ZHANG,Xia WEI,Xin YU,Cuixian ZHANG()   

  1. School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
  • Received:2018-11-21 Revised:2019-01-04 Online:2019-07-20 Published:2019-07-21
  • Supported by:
    National Natural Science Foundation((81741160););Science and Technology Planning Project of Guangdong Province((2015A020216017, 2017A020217008););The Fire Plan Project of the Guangzhou University of Chinese Medicine((XH20170110););Open Subject of State Key Laboratory of Marine Resources Utilization in the South China Sea of Hainan University((2016003););Natural Science Foundation of Guangdong Province((2014A030313411).)

Abstract:

Research was carried out on novel secondary metabolites from Leptogorgia rigida collected from the South China Sea. The secondary metabolites were isolated by silica gel column chromatography, ODS, Sephadex LH-20, thin layer chromatography, and high performance liquid chromatography (HPLC). The structures of compounds were identified by nuclear magnetic resonance spectrum (NMR), mass spectrum (MS), and literature analysis. Eight sterols were obtained and elucidated as follows: 3β, 6β, 11-trihydroxy-24-methyl-5α-chloest-9, 11-seco-7-en-9-one (1); 3β, 6α, 11-trihydroxy-24- methyl-5α-chloest-9, 11-seco-7-en-9-one (2); 3β, 6α, 11-tri- hydroxy-5α-chloest-9, 11-seco-7, 22(E)- dien-9-one (3); pregnan- 4-en-3, 20-dione (4); 5α-pregnan-3, 20-dione (5); 3β-hydroxy- pregnan-5-en-20-dione (6); 3β-hydroxy-5α-pregnan-20-one (7); and Gorgosterol (8). All the sterols were first obtained from Leptogorgia rigida.

Key words: Leptogorgia rigida, secondary metabolites, secosterols, identification