6-（2-Hydroxy-5-acetylphenyl）-apigenin （1）, a new flavonoid with a phenyl substituent, was first isolated from Selaginella tamariscina. Its structure was elucidated on the basis of 1D and 2D NMR as well as ESI-HR-M...6-（2-Hydroxy-5-acetylphenyl）-apigenin （1）, a new flavonoid with a phenyl substituent, was first isolated from Selaginella tamariscina. Its structure was elucidated on the basis of 1D and 2D NMR as well as ESI-HR-MS spectroscopic analysis.展开更多
Isoselagintamarlin A(1),a selaginellin analogue featured a rare benzofuran unit,was isolated from Selaginella tamariscina.Its complete structural assignment was established through a combination of high-feld NMR techn...Isoselagintamarlin A(1),a selaginellin analogue featured a rare benzofuran unit,was isolated from Selaginella tamariscina.Its complete structural assignment was established through a combination of high-feld NMR technique and biomimetic synthesis.Notably,isoselagintamarlin A(1)was successfully synthesized via sequential oxidations and intramolecular cyclization.展开更多
Gout is a disease of purine metabolic disorders which results from long-term hyperuricemia and the sodium urate deposition in and around the joints. Selaginella tamariscina （ST） is an important traditional Chinese h...Gout is a disease of purine metabolic disorders which results from long-term hyperuricemia and the sodium urate deposition in and around the joints. Selaginella tamariscina （ST） is an important traditional Chinese herbal medicine and is used for the treatment of gout and hyperuricemia. In this study, the rat model of acute gout with hyperuricemia was established by intraperitoneal injection of xanthine and oxonic acid potassium salt and articular injection monosodium urate （MSU）. The effect of ST in the treatment of gout was investigated by measuring joint swelling, the expression of IL-1 !3 in serum and histological changes of joint by haematoxylin eosin （H＆E） staining. Subsequently, urine metabolomics analysis for biomarkers discovery in acute gout with hyperuricemia rats was performed by the ultra-performance liquid chromatography-electrospray ionization quadruple time-of-flight mass spectrometry （UPLC-ESI-QTOF/MS） combined with chemometric approach. Principal component analysis （PCA） and orthogonal partial least squares-discriminant analysis （OPLS-DA） were used to detect potential biomarkers. A total of 18 potential biomarkers were identified mainly including tryptophan metabolism; tyrosine metabolism; ly- sine methylation; pyrimidine metabolism; purine metabolism; TCA cycle and fatty acid metabolisms. This study in- dicates that ST could efficiently ameliorate the disease of acute gout with hyperuricemia in rats. The related meta- bolic biomarkers could provide useful information and the metabolic mechanism could be used for further study about the model of acute gout with hyperuricemia in rats.展开更多
基金supported by the National Natural Science Foundation of China(No.30873149)Precision Equipmentand Apparatus Foundation of Central South University(No.ZKJ 2008046).
文摘6-（2-Hydroxy-5-acetylphenyl）-apigenin （1）, a new flavonoid with a phenyl substituent, was first isolated from Selaginella tamariscina. Its structure was elucidated on the basis of 1D and 2D NMR as well as ESI-HR-MS spectroscopic analysis.
基金supported by the NSFC-Joint Foundation of Yunnan Province(No.U1502223)the National Natural Science Foundation of China(Nos.21837003,21778059 and 81773611)the Science and Technology Program of Yunnan Province(No.2018ZF001).
文摘Isoselagintamarlin A(1),a selaginellin analogue featured a rare benzofuran unit,was isolated from Selaginella tamariscina.Its complete structural assignment was established through a combination of high-feld NMR technique and biomimetic synthesis.Notably,isoselagintamarlin A(1)was successfully synthesized via sequential oxidations and intramolecular cyclization.
基金The authors thank the participants who participated. They are also grateful to the staff of the National Center of Mass Spectrometry in Changchun ＆ Chemical Biol- ogy Laboratory. This work was supported by the Na- tional Natural Science Foundation of China （Nos. 81303280, 81573574, 81530094, 81473537, 31670356） and the Natural Science Foundation of Jilin Province （No. 20150101077JC）.
文摘Gout is a disease of purine metabolic disorders which results from long-term hyperuricemia and the sodium urate deposition in and around the joints. Selaginella tamariscina （ST） is an important traditional Chinese herbal medicine and is used for the treatment of gout and hyperuricemia. In this study, the rat model of acute gout with hyperuricemia was established by intraperitoneal injection of xanthine and oxonic acid potassium salt and articular injection monosodium urate （MSU）. The effect of ST in the treatment of gout was investigated by measuring joint swelling, the expression of IL-1 !3 in serum and histological changes of joint by haematoxylin eosin （H＆E） staining. Subsequently, urine metabolomics analysis for biomarkers discovery in acute gout with hyperuricemia rats was performed by the ultra-performance liquid chromatography-electrospray ionization quadruple time-of-flight mass spectrometry （UPLC-ESI-QTOF/MS） combined with chemometric approach. Principal component analysis （PCA） and orthogonal partial least squares-discriminant analysis （OPLS-DA） were used to detect potential biomarkers. A total of 18 potential biomarkers were identified mainly including tryptophan metabolism; tyrosine metabolism; ly- sine methylation; pyrimidine metabolism; purine metabolism; TCA cycle and fatty acid metabolisms. This study in- dicates that ST could efficiently ameliorate the disease of acute gout with hyperuricemia in rats. The related meta- bolic biomarkers could provide useful information and the metabolic mechanism could be used for further study about the model of acute gout with hyperuricemia in rats.
