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
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.