The chemical investigation into the EtOAc extract of the deep-sea-derived fungus Penicillium citrinum W22 yielded three unprecedented citrinin dimers,neo-Dicitrinols A–C(1–3)and a known one,penicitrinone A(4).Their ...The chemical investigation into the EtOAc extract of the deep-sea-derived fungus Penicillium citrinum W22 yielded three unprecedented citrinin dimers,neo-Dicitrinols A–C(1–3)and a known one,penicitrinone A(4).Their structures were elucidated by extensive analysis of spectroscopic data,electronic circular dichroism(ECD)calculation,X-ray diffraction,and biogenetic consideration.neo-Dicitrinols A–C(1–3),bearing a tetramic acid unit,represent the first example of citrinin analogues as hybrid polyketide synthase-nonribosomal peptide synthase(PKS-NRPS)products.neo-Dicitrinol C(3)significantly inhibited renin-angiotensin system-selective lethal 3(RSL3)-induced ferroptosis with a half maximal effective concentration(EC50)value of 21.6μmol/L.展开更多
A novel meroterpenoid,named meroterpenthiazole A(1),was isolated from the deep-sea-derived Penicillium allii-sativi.Its structure was established by extensive spectroscopic and computational methods.Meroterpenthiazole...A novel meroterpenoid,named meroterpenthiazole A(1),was isolated from the deep-sea-derived Penicillium allii-sativi.Its structure was established by extensive spectroscopic and computational methods.Meroterpenthiazole A bears a rare benzothiazole moiety in nature.Compound 1 significantly inhibited retinoid X receptor(RXR)-α transcriptional effect(K_(D)=12.3 μmol/L) through a novel binding mechanism.展开更多
基金financially supported by the Xiamen Southern Oceanographic Center(No.22GYY007HJ07)。
文摘The chemical investigation into the EtOAc extract of the deep-sea-derived fungus Penicillium citrinum W22 yielded three unprecedented citrinin dimers,neo-Dicitrinols A–C(1–3)and a known one,penicitrinone A(4).Their structures were elucidated by extensive analysis of spectroscopic data,electronic circular dichroism(ECD)calculation,X-ray diffraction,and biogenetic consideration.neo-Dicitrinols A–C(1–3),bearing a tetramic acid unit,represent the first example of citrinin analogues as hybrid polyketide synthase-nonribosomal peptide synthase(PKS-NRPS)products.neo-Dicitrinol C(3)significantly inhibited renin-angiotensin system-selective lethal 3(RSL3)-induced ferroptosis with a half maximal effective concentration(EC50)value of 21.6μmol/L.
基金supported by the National Natural Science Foundation of China (No. 22177143)the COMRA program (No. DY135-B2–08)。
文摘A novel meroterpenoid,named meroterpenthiazole A(1),was isolated from the deep-sea-derived Penicillium allii-sativi.Its structure was established by extensive spectroscopic and computational methods.Meroterpenthiazole A bears a rare benzothiazole moiety in nature.Compound 1 significantly inhibited retinoid X receptor(RXR)-α transcriptional effect(K_(D)=12.3 μmol/L) through a novel binding mechanism.
