A new macrocyclic diterpenoid,named kansuinine J（1）,was isolated from the roots of Euphorbia kansui.Its structure was characterized on the basis of spectroscopic analysis.
Two new diterpenoid quinones, colean S and T were isolated from the chloroform extract of the leaves of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1,4-phananthrenedione-4b,...Two new diterpenoid quinones, colean S and T were isolated from the chloroform extract of the leaves of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1,4-phananthrenedione-4b,5,6,8a,9,10-hexahydro-3,9 beta ,10 alpha- tri-hydroxy-4b,7,8-trimethyl-2-propylene(2), respectively.展开更多
A new diterpenoid was isolated from the bark of Larix olgensis Henry var. koreana Nakai. Its structure was elucidated as 5S, 9S, 10R-labda-8 (17), 13-diene-6a, 15-diol l by spectroscopic methods.
A new jatrophane diterpenoid ester （2S, 3S, 4R, 5R, 7S, 8R, 13R, 15R） - 3, 5, 7, 8, 15- pentaacetoxy-9, 14-dioxojatropha-6（17）, 11E-diene was isolated from the whole plant of Euphorbia turczaninowii Kar. ＆ Kit.. ...A new jatrophane diterpenoid ester （2S, 3S, 4R, 5R, 7S, 8R, 13R, 15R） - 3, 5, 7, 8, 15- pentaacetoxy-9, 14-dioxojatropha-6（17）, 11E-diene was isolated from the whole plant of Euphorbia turczaninowii Kar. ＆ Kit.. Its structure was characterized by spectral analysis and confurmed by X-ray crystallographic analysis.展开更多
Euphopepluanones F−K(1−4),four new jatrophane type diterpenoids were isolated from the seeds of Euphorbia peplus,along with eight known diterpenoids(5−12).Their structures were established on the basis of extensive sp...Euphopepluanones F−K(1−4),four new jatrophane type diterpenoids were isolated from the seeds of Euphorbia peplus,along with eight known diterpenoids(5−12).Their structures were established on the basis of extensive spectroscopic analysis and X-ray crystallographic experiments.The new compounds 1−4 were assessed for their activities to induce lysosomal biogenesis through LysoTracker Red staining.Compound 2 significantly induced lysosomal biogenesis.In addi-tion,compound 2 could increase the number of LC3 dots,indicating that it could activate the lysosomal-autophagy pathway.展开更多
The title compound,sarcophytol-A benzyl ether has been synthesized through 13 steps by employing acetone and geraniol as starting materials.The key steps in the synthesis were double bond migration reaction of allylic...The title compound,sarcophytol-A benzyl ether has been synthesized through 13 steps by employing acetone and geraniol as starting materials.The key steps in the synthesis were double bond migration reaction of allylic alcohols 5 and 6,phase transfer catalytic coupling (PTC)reaction of Ⅱ with 7 and the cyclization reaction of dicarbonyl acyclic precursor induced by TiCl_3-AlCl_3(3:1)/Zn-Cu system.展开更多
基金supported by grants from the Ministry of Science and Technology(Nos.2009CB940900 and 2009CB522300)
文摘A new macrocyclic diterpenoid,named kansuinine J（1）,was isolated from the roots of Euphorbia kansui.Its structure was characterized on the basis of spectroscopic analysis.
基金Project supported by the Applied Basic Research Foundation of Yunnan Province (1999C0081M). Authors would like to thank the staf
文摘Two new diterpenoid quinones, colean S and T were isolated from the chloroform extract of the leaves of Coleus forskohlii, and based on spectroscopic data, their structures were identified as 1,4-phananthrenedione-4b,5,6,8a,9,10-hexahydro-3,9 beta ,10 alpha- tri-hydroxy-4b,7,8-trimethyl-2-propylene(2), respectively.
文摘A new diterpenoid was isolated from the bark of Larix olgensis Henry var. koreana Nakai. Its structure was elucidated as 5S, 9S, 10R-labda-8 (17), 13-diene-6a, 15-diol l by spectroscopic methods.
文摘A new jatrophane diterpenoid ester （2S, 3S, 4R, 5R, 7S, 8R, 13R, 15R） - 3, 5, 7, 8, 15- pentaacetoxy-9, 14-dioxojatropha-6（17）, 11E-diene was isolated from the whole plant of Euphorbia turczaninowii Kar. ＆ Kit.. Its structure was characterized by spectral analysis and confurmed by X-ray crystallographic analysis.
基金This research was supported by the National Natural Science Foundation of China under Grant(Numbers 21432010,31872666,82073740)National Key R&D Program of China under Grant(Number 2018YFA0900600)+2 种基金Technological leading talent project of Yunnan(2015HA020)Special Fund for Talent Introduction of Kunming Institute of Botany,CAS(to Xin Fang)and Key R&D Program of Yunnan under Grant(2019ZF011-2).
文摘Euphopepluanones F−K(1−4),four new jatrophane type diterpenoids were isolated from the seeds of Euphorbia peplus,along with eight known diterpenoids(5−12).Their structures were established on the basis of extensive spectroscopic analysis and X-ray crystallographic experiments.The new compounds 1−4 were assessed for their activities to induce lysosomal biogenesis through LysoTracker Red staining.Compound 2 significantly induced lysosomal biogenesis.In addi-tion,compound 2 could increase the number of LC3 dots,indicating that it could activate the lysosomal-autophagy pathway.
基金This project was supported by the National Natural Science Foundation of China Special Research Grant for Doctoral Sites in Universities.
文摘The title compound,sarcophytol-A benzyl ether has been synthesized through 13 steps by employing acetone and geraniol as starting materials.The key steps in the synthesis were double bond migration reaction of allylic alcohols 5 and 6,phase transfer catalytic coupling (PTC)reaction of Ⅱ with 7 and the cyclization reaction of dicarbonyl acyclic precursor induced by TiCl_3-AlCl_3(3:1)/Zn-Cu system.
