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Additional New Cytotoxic Triquinane-Type Sesquiterpenoids Chondrosterins K-M from the Marine Fungus Chondrostereum sp.

ABSTRACT: By the method of ¹H NMR prescreening and tracing the diagnostic proton signals of the methyl groups, three additional new triquinane-type sesquiterpenoids-chondrosterins K-M (1-3) and the known sesquiterpenoid anhydroarthrosporone (4)-were isolated from the marine fungus Chondrostereum sp. Their structures were elucidated on the basis of MS, 1D, and 2D NMR data. Chondrosterin K is a rare hirsutane sesquiterpenoid, in which a methyl group was migrated from C-2 to C-6 and has a double bond between C-2 and C-3. Compounds 1-3 showed significant cytotoxicities against various cancer cell lines in vitro.

SUBMITTER: Huang L

PROVIDER: S-EPMC5039528 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Additional New Cytotoxic Triquinane-Type Sesquiterpenoids Chondrosterins K-M from the Marine Fungus Chondrostereum sp.

Huang Lei L Lan Wen-Jian WJ Deng Rong R Feng Gong-Kan GK Xu Qing-Yan QY Hu Zhi-Yu ZY Zhu Xiao-Feng XF Li Hou-Jin HJ

Marine drugs 20160826 9

By the method of ¹H NMR prescreening and tracing the diagnostic proton signals of the methyl groups, three additional new triquinane-type sesquiterpenoids-chondrosterins K-M (1-3) and the known sesquiterpenoid anhydroarthrosporone (4)-were isolated from the marine fungus Chondrostereum sp. Their structures were elucidated on the basis of MS, 1D, and 2D NMR data. Chondrosterin K is a rare hirsutane sesquiterpenoid, in which a methyl group was migrated from C-2 to C-6 and has a double bond between ...[more]

PMID: 27571085

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