Two new linear furocoumarins were isolated from Notopterygium incisum using silica gel,gel Sephadex LH-20 column chromatography,and preparative high-performance liquid chromatography.The structures of the new compound...Two new linear furocoumarins were isolated from Notopterygium incisum using silica gel,gel Sephadex LH-20 column chromatography,and preparative high-performance liquid chromatography.The structures of the new compounds were elucidated through analysis of spectroscopic evidence,including data obtained from high-resolution electrospray ionization mass spectrometry(HRESIMS)and nuclear magnetic resonance(NMR).The absolute configurations of Notoprenylate L(1)and Nototerprinol K(2)were further confirmed using electronic circular dichroism(ECD)calculations.Compound 1 demonstrated the ability to inhibit the expression of nitric oxide(NO),a pro-inflammatory factor,in lipopolysaccharide-induced RAW264.7 macrophages at a concentration of 7.5μmol/L,indicating its potential for anti-inflammatory activity.展开更多
Furocoumarins are an important class of heterocyclic compounds with a fused tricyclic structure of coumarin and furan rings.They are commonly found in bioactive natural products and have a diverse range of biological ...Furocoumarins are an important class of heterocyclic compounds with a fused tricyclic structure of coumarin and furan rings.They are commonly found in bioactive natural products and have a diverse range of biological and pharmaceutical properties,including cytotoxicity,photosensitivity,insecticidal,antibacterial,and antifungal activity,among others.The elegant linear/angular tricyclic skeleton and superior pharmacological properties,make them ideal for building and developing advanced biological scaffolds for biomedical applications.As a result,the family of furocoumarins has been the focus of intensive research,and lots of encouraging progress have been achieved in recent years.This review summarizes the most recent methods reported for the synthesis of the furocoumarin derivative family,along with their applications in medicinal chemistry covering from 2018 to 2022.展开更多
Species from Moraceae family stand out in popular medicine and phytotherapy, have been for example used as expectorants, bronchodilators, anthelmintics and treatment of skin diseases, such as vitiligo, due to the pres...Species from Moraceae family stand out in popular medicine and phytotherapy, have been for example used as expectorants, bronchodilators, anthelmintics and treatment of skin diseases, such as vitiligo, due to the presence of compounds with proven biological activity, as the coumarins. Coumarins are lactones with 1,2-benzopyrone basic structure, and are widely distributed in the plant kingdom, both in free form, and in glycosylated form. This work reports a literature review, describing the data of 13C NMR from 53 coumarins isolated from the family Moraceae, and data comparison between genera who presented photochemical studies, in order to contribute to the chemotaxonomy of this family.展开更多
A novel one-pot synthesis of furo[3,2-c]coumarins has been developed from readily available starting materials 4-hydroxycoumarin and arylglyoxal. This method is simple, rapid and good yielding.
Syntheses of 2,3-dimethyl-4H-furo[3,2-c]coumarin and 3-phenyl-4H-furo[3,2-c]coumarin as angular furocou- marins were carried out through Williamson reaction of 4-hydroxycoumarin with a-haloketones followed by cycli- z...Syntheses of 2,3-dimethyl-4H-furo[3,2-c]coumarin and 3-phenyl-4H-furo[3,2-c]coumarin as angular furocou- marins were carried out through Williamson reaction of 4-hydroxycoumarin with a-haloketones followed by cycli- zation. Photooxygenation of the synthesized furocoumarin derivatives was performed and the photoproducts were isolated and characterized. The affinity of 2,3-dimethyl-4H-furo[3,2-c]coumarin towards DNA and the antibacterial activity were evaluated and compared with 8-methoxypsoralen （8-MOP）.展开更多
文摘Two new linear furocoumarins were isolated from Notopterygium incisum using silica gel,gel Sephadex LH-20 column chromatography,and preparative high-performance liquid chromatography.The structures of the new compounds were elucidated through analysis of spectroscopic evidence,including data obtained from high-resolution electrospray ionization mass spectrometry(HRESIMS)and nuclear magnetic resonance(NMR).The absolute configurations of Notoprenylate L(1)and Nototerprinol K(2)were further confirmed using electronic circular dichroism(ECD)calculations.Compound 1 demonstrated the ability to inhibit the expression of nitric oxide(NO),a pro-inflammatory factor,in lipopolysaccharide-induced RAW264.7 macrophages at a concentration of 7.5μmol/L,indicating its potential for anti-inflammatory activity.
基金financial support from the National Natural Science Foundation of China(Nos.21971211 and 22171232)the Natural Science Foundation of Zhejiang Province(No.2022XHSJJ007)+3 种基金the Qiantang River Talent Foundation(No.QJD1902029)Westlake Universitysupported by Instrumentation and Service Centers for Molecular Science and for Physical Science(ISCMS and ISCPS)by the Mass Spectrometry&Metabolomics Core Facility at the Center for Biomedical Research Core Facilities and Westlake University HPC Center。
文摘Furocoumarins are an important class of heterocyclic compounds with a fused tricyclic structure of coumarin and furan rings.They are commonly found in bioactive natural products and have a diverse range of biological and pharmaceutical properties,including cytotoxicity,photosensitivity,insecticidal,antibacterial,and antifungal activity,among others.The elegant linear/angular tricyclic skeleton and superior pharmacological properties,make them ideal for building and developing advanced biological scaffolds for biomedical applications.As a result,the family of furocoumarins has been the focus of intensive research,and lots of encouraging progress have been achieved in recent years.This review summarizes the most recent methods reported for the synthesis of the furocoumarin derivative family,along with their applications in medicinal chemistry covering from 2018 to 2022.
文摘Species from Moraceae family stand out in popular medicine and phytotherapy, have been for example used as expectorants, bronchodilators, anthelmintics and treatment of skin diseases, such as vitiligo, due to the presence of compounds with proven biological activity, as the coumarins. Coumarins are lactones with 1,2-benzopyrone basic structure, and are widely distributed in the plant kingdom, both in free form, and in glycosylated form. This work reports a literature review, describing the data of 13C NMR from 53 coumarins isolated from the family Moraceae, and data comparison between genera who presented photochemical studies, in order to contribute to the chemotaxonomy of this family.
文摘A novel one-pot synthesis of furo[3,2-c]coumarins has been developed from readily available starting materials 4-hydroxycoumarin and arylglyoxal. This method is simple, rapid and good yielding.
文摘Syntheses of 2,3-dimethyl-4H-furo[3,2-c]coumarin and 3-phenyl-4H-furo[3,2-c]coumarin as angular furocou- marins were carried out through Williamson reaction of 4-hydroxycoumarin with a-haloketones followed by cycli- zation. Photooxygenation of the synthesized furocoumarin derivatives was performed and the photoproducts were isolated and characterized. The affinity of 2,3-dimethyl-4H-furo[3,2-c]coumarin towards DNA and the antibacterial activity were evaluated and compared with 8-methoxypsoralen （8-MOP）.
