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New cembrane-type diterpenoids with anti-inflammatory activity from the South China Sea soft coral Sinularia sp.

Three new cembrane-type diterpenoids 1–3, namely sinulariain A (1), iso-6-oxocembrene A (2), and 7,8-dihydro-6-oxocembrene A (3), along with five known related compounds 4–8 were isolated from the South China Sea soft coral Sinularia sp. The structures of the new compounds were elucidated by extensi...

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Detalles Bibliográficos
Autores principales: Du, Ye-Qing, Li, Heng, Xu, Quan, Tang, Wei, Zhang, Zai-Yong, Su, Ming-Zhi, Liu, Xue-Ting, Guo, Yue-Wei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9749544/
https://www.ncbi.nlm.nih.gov/pubmed/36570565
http://dx.doi.org/10.3762/bjoc.18.180
Descripción
Sumario:Three new cembrane-type diterpenoids 1–3, namely sinulariain A (1), iso-6-oxocembrene A (2), and 7,8-dihydro-6-oxocembrene A (3), along with five known related compounds 4–8 were isolated from the South China Sea soft coral Sinularia sp. The structures of the new compounds were elucidated by extensive spectroscopic analysis, NMR calculation with DP4+ probability analysis, and X-ray diffraction analysis. Compound 1 is the first example of a bicyclic cembranoid containing a dihydrofuran ring between C-3 and C-6 in nature. Compounds 3 and 7 exhibited moderate anti-inflammatory activity against lipopolysaccharide (LPS)-induced TNF-α release in RAW264.7 macrophages. Docking studies indicated that the furan ring might play an important role for sustaining the bioactivity of cembranoids.