Two new sterol have been isolated from the South China Sea marine organism. Compound 1 was isolated from the sponge Polymastia sobustia and compound 2 was obtained from the soft coral Sinularia inexplicata. Their stru...Two new sterol have been isolated from the South China Sea marine organism. Compound 1 was isolated from the sponge Polymastia sobustia and compound 2 was obtained from the soft coral Sinularia inexplicata. Their structures were established as 3 beta-hydroxy-stigmast-5en-7-one and 24-methylene cholestan -3 beta, 6 beta, 9 alpha, 19-tetrol by variety of spectral analysis such as IR, EIMS, 1DNMR, H-1-H-1 COSY, HMQC, HMBC, NOESY.展开更多
A new ursane-type triterpene, 3 beta-hydroxy-urs-5(6)-en-28-oic acid 1, was isolated from the aerial parts of Teucrium integrifolium and characterized. The structure of this new compound was mainly established by 2D N...A new ursane-type triterpene, 3 beta-hydroxy-urs-5(6)-en-28-oic acid 1, was isolated from the aerial parts of Teucrium integrifolium and characterized. The structure of this new compound was mainly established by 2D NMR techniques (COSY, HETCOR, HMBC).展开更多
文摘Two new sterol have been isolated from the South China Sea marine organism. Compound 1 was isolated from the sponge Polymastia sobustia and compound 2 was obtained from the soft coral Sinularia inexplicata. Their structures were established as 3 beta-hydroxy-stigmast-5en-7-one and 24-methylene cholestan -3 beta, 6 beta, 9 alpha, 19-tetrol by variety of spectral analysis such as IR, EIMS, 1DNMR, H-1-H-1 COSY, HMQC, HMBC, NOESY.
文摘A new ursane-type triterpene, 3 beta-hydroxy-urs-5(6)-en-28-oic acid 1, was isolated from the aerial parts of Teucrium integrifolium and characterized. The structure of this new compound was mainly established by 2D NMR techniques (COSY, HETCOR, HMBC).