Carascynol A,an unprecedented 4/9/8 ring system hybrid with a peroxide bridge,was characterized from Hyperi-cum ascyron.The architecture contains a caryophyllane-type moiety and a C_(6) unit derived from polyprenylate...Carascynol A,an unprecedented 4/9/8 ring system hybrid with a peroxide bridge,was characterized from Hyperi-cum ascyron.The architecture contains a caryophyllane-type moiety and a C_(6) unit derived from polyprenylated acylphloroglucinols.Its structure and absolute configuration were determined by comprehensive spectroscopic and X-ray diffraction data.Biologically,compound 1 inhibited cell proliferation in LoVo,SW480,and HCT116 cell lines(IC_(50)=12.30-24.57μM).展开更多
Five new polycyclic polyprenylated acylphloroglucinols(1-5),ascyrones A-E,and four known compounds(6-9)were isolated from the aerial parts of Hypericum ascyron.All of the isolates containing a bicyclo[3.3.1]nonane-2,4...Five new polycyclic polyprenylated acylphloroglucinols(1-5),ascyrones A-E,and four known compounds(6-9)were isolated from the aerial parts of Hypericum ascyron.All of the isolates containing a bicyclo[3.3.1]nonane-2,4,9-trione core and a benzoyl group,belonged to type B bicyclic polyprenylated acylphloroglucinols(BPAPs).Their structures and absolute configurations were established based on spectroscopic analyses and calculated electronic circular dichroism(ECD)data.The anti-inflammatory,neuroprotective and cytotoxicity activities of compounds 1-4 and 6-9 were evaluated.Compound 6 exhibited obvious anti-inflammatory activity in lipopolysaccharide(LPS)-induced RAW264.7 cells.Compounds 1 and 9 exhibited slight cytotoxicity against Hep3B cells.Meanwhile,compound 1 showed mild neuroprotective activity against corticosterone(CORT)-induced PC 12 cell damage at 10 μmol-L^(-1).展开更多
基金supported by the NSFC-Joint Foundation of Yunnan Province (Grant No.U1902213)the Second Tibetan Plateau Scientific Expedition and Research (STEP)program (Grant No.2019QZKK0502-0303)+2 种基金Natural Science Foundation of Yunnan (Grant No.2019FA003)CAS Interdisciplinary Innovation Team of CAS“Light of West China”Programthe Fund of State Key Laboratory of Phytochemistry and Plant Resources in West China (Grant No.E0230211Z1).
文摘Carascynol A,an unprecedented 4/9/8 ring system hybrid with a peroxide bridge,was characterized from Hyperi-cum ascyron.The architecture contains a caryophyllane-type moiety and a C_(6) unit derived from polyprenylated acylphloroglucinols.Its structure and absolute configuration were determined by comprehensive spectroscopic and X-ray diffraction data.Biologically,compound 1 inhibited cell proliferation in LoVo,SW480,and HCT116 cell lines(IC_(50)=12.30-24.57μM).
基金This work was supported by the National Natural Science Foundation of China(No.31800279).
文摘Five new polycyclic polyprenylated acylphloroglucinols(1-5),ascyrones A-E,and four known compounds(6-9)were isolated from the aerial parts of Hypericum ascyron.All of the isolates containing a bicyclo[3.3.1]nonane-2,4,9-trione core and a benzoyl group,belonged to type B bicyclic polyprenylated acylphloroglucinols(BPAPs).Their structures and absolute configurations were established based on spectroscopic analyses and calculated electronic circular dichroism(ECD)data.The anti-inflammatory,neuroprotective and cytotoxicity activities of compounds 1-4 and 6-9 were evaluated.Compound 6 exhibited obvious anti-inflammatory activity in lipopolysaccharide(LPS)-induced RAW264.7 cells.Compounds 1 and 9 exhibited slight cytotoxicity against Hep3B cells.Meanwhile,compound 1 showed mild neuroprotective activity against corticosterone(CORT)-induced PC 12 cell damage at 10 μmol-L^(-1).