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Anti-Inflammatory Polyketide Derivatives from the Sponge-Derived Fungus Pestalotiopsis sp. SWMU-WZ04-2.

ABSTRACT: Five undescribed polyketide derivatives, pestaloketides A-E (1-5), along with eleven known analogues (6-16), were isolated from the sponge-derived fungus Pestalotiopsis sp. Their structures, including absolute configurations, were elucidated by analyses of NMR spectroscopic HRESIMS data and electronic circular dichroism (ECD) calculations. Compounds 5, 6, 9, and 14 exhibited weak cytotoxicities against four human cancer cell lines, with IC50 values ranging from 22.1 to 100 μM. Pestaloketide A (1) is an unusual polyketide, featuring a rare 5/10/5-fused ring system. Pestaloketides A (1) and B (2) exhibited moderately inhibited LPS-induced NO production activity, with IC50 values of 23.6 and 14.5 μM, respectively, without cytotoxicity observed. Preliminary bioactivity evaluations and molecular docking analysis indicated that pestaloketides A (1) and B (2) had the potential to be developed into anti-inflammatory activity drug leads.

SUBMITTER: Jiang P 

PROVIDER: S-EPMC9697532 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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Anti-Inflammatory Polyketide Derivatives from the Sponge-Derived Fungus <i>Pestalotiopsis</i> sp. SWMU-WZ04-2.

Jiang Peng P   Luo Jinfeng J   Jiang Yao Y   Zhang Liping L   Jiang Liyuan L   Teng Baorui B   Niu Hong H   Zhang Dan D   Lei Hui H  

Marine drugs 20221113 11

Five undescribed polyketide derivatives, pestaloketides A-E (<b>1</b>-<b>5</b>), along with eleven known analogues (<b>6</b>-<b>16</b>), were isolated from the sponge-derived fungus <i>Pestalotiopsis</i> sp. Their structures, including absolute configurations, were elucidated by analyses of NMR spectroscopic HRESIMS data and electronic circular dichroism (ECD) calculations. Compounds <b>5</b>, <b>6</b>, <b>9</b>, and <b>14</b> exhibited weak cytotoxicities against four human cancer cell lines, w  ...[more]

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