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Nanjiols A-C, New Steroids from the Chinese Soft Coral Nephthea bayer

注意：本论文已在J. Nat. Prod. 2002, 65, 1675-1677发表
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Zhi-Yu Shao(邵志宇), Da-Yuan Zhu, and Yue-Wei Guo*
State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese
Academy of Sciences, Shanghai 200031, People’s Republic of China

Abstract：Three new polyoxygenated steroids, nanjiol A (1), B (2), and C (3), were isolated from an East China Sea soft coral Nephthea bayeri, and their structures were characterized by spectroscopic methods and comparison with known compounds. The new molecules were structurally related to (20S)-cholesta-1,4- diene-18,20-diol-3-one (4), a typical metabolite from the black coral Antipathes subpinnata. Soft corals (phylum Coelenterata) are a rich source of various sesqui- and diterpenoids and polyoxygenated steroids with interesting biological activitives.1-3 In the course of our research for discovering biologically active substances from marine organisms, a sample of the alcyonacean Nephthea bayeri Verseveldt (Nephtheidae) collected off Nanji Island, China, was investigated. Three novel uncommon sterols, named nanjiols A-C (1-3), together with six known compounds, have been isolated from this organism. In the present paper, we report the isolation and structural determination by spectroscopic methods of these new compounds.

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1、Penicillazine, a Unique Quinolone Derivative with 4H-5,6-Dihydro-1,2-oxazine Ring System from the Marine Fungus Penicillium sp. (Strain #386) from the South China Sea

2、O-methyl nakafuran-8 lactone, a new sesquiterpenoid from a hainan marine sponge Dysidea sp.

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