A new protoilludane sesquiterpenoid aromatic ester,named armillarizin (1)has been isolated from the artificially cultured mycelium of Armillaria me- llea(Vahl.ex Fr)Quel.(Tricholomataceae).Its structure was deduced on...A new protoilludane sesquiterpenoid aromatic ester,named armillarizin (1)has been isolated from the artificially cultured mycelium of Armillaria me- llea(Vahl.ex Fr)Quel.(Tricholomataceae).Its structure was deduced on the ba- sis of spectral analyses.The relative configuration was established from the nuclear Overhauser effects and from the values of ~1H-~1H coupling constants.展开更多
Various aromatic α-keto esters were rapidly and selectively reduced to aromatic α-hydroxy esters by commercially available zinc dust and ammonium formate in the presence of other functional groups such as halogens, ...Various aromatic α-keto esters were rapidly and selectively reduced to aromatic α-hydroxy esters by commercially available zinc dust and ammonium formate in the presence of other functional groups such as halogens, methoxy and esters.展开更多
A new compound, （S）-2, 4-dihydroxy-1-butyl （4-hydroxy） benzoate （1）, and a known compound, fructigenines A （2）, were isolated from fungus Penicillium auratiogriseum derived from sponge Mycale plumose, by bioas...A new compound, （S）-2, 4-dihydroxy-1-butyl （4-hydroxy） benzoate （1）, and a known compound, fructigenines A （2）, were isolated from fungus Penicillium auratiogriseum derived from sponge Mycale plumose, by bioassay-guided fractionation. Their structures were established by spectroscopic and chemical methods. Both compounds show.ed cytotoxic activity against tsFT210 cells.展开更多
A Pd（Ⅱ）-catalyzed ortho-olefination of aromatic acetic esters is described which features with an excellent funcitional group tolerance, good yields, mild reaction conditions, good scalability as well as high chemo...A Pd（Ⅱ）-catalyzed ortho-olefination of aromatic acetic esters is described which features with an excellent funcitional group tolerance, good yields, mild reaction conditions, good scalability as well as high chemo-and regio-selectivity.展开更多
Amino acids were found to be as good ligands for copper-catalyzed borylation reactions of primary and secondary alkyl halides,and the B2pin2 acted as bi-boron source for borylation.The high reaction efficiency and mil...Amino acids were found to be as good ligands for copper-catalyzed borylation reactions of primary and secondary alkyl halides,and the B2pin2 acted as bi-boron source for borylation.The high reaction efficiency and mild conditions make the new catalyst system a useful alternative to the recently developed methods for the preparation of alkylboronic esters.展开更多
文摘A new protoilludane sesquiterpenoid aromatic ester,named armillarizin (1)has been isolated from the artificially cultured mycelium of Armillaria me- llea(Vahl.ex Fr)Quel.(Tricholomataceae).Its structure was deduced on the ba- sis of spectral analyses.The relative configuration was established from the nuclear Overhauser effects and from the values of ~1H-~1H coupling constants.
文摘Various aromatic α-keto esters were rapidly and selectively reduced to aromatic α-hydroxy esters by commercially available zinc dust and ammonium formate in the presence of other functional groups such as halogens, methoxy and esters.
文摘A new compound, （S）-2, 4-dihydroxy-1-butyl （4-hydroxy） benzoate （1）, and a known compound, fructigenines A （2）, were isolated from fungus Penicillium auratiogriseum derived from sponge Mycale plumose, by bioassay-guided fractionation. Their structures were established by spectroscopic and chemical methods. Both compounds show.ed cytotoxic activity against tsFT210 cells.
基金Financial support from the National Natural Science Foundation of China(No.21202049)the Recruitment Program of Global Experts(1000 Talents Plan)+1 种基金the Natural Science Foundation of Fujian Province(No.2016J01064)Fujian Hundred Talents Plan and Program of Innovative Research Team of Huaqiao University(No.Z14X0047)are gratefully acknowledged
文摘A Pd（Ⅱ）-catalyzed ortho-olefination of aromatic acetic esters is described which features with an excellent funcitional group tolerance, good yields, mild reaction conditions, good scalability as well as high chemo-and regio-selectivity.
基金support from the Eastern Scholar,Shanghai Pujiang Program,Key Subject of Shanghai Municipal Education Commission,Natural Science Foundation of Shanghai (No.12ZR1410500)NSFC (Nos.21102088,51202138 and 21174081)
文摘Amino acids were found to be as good ligands for copper-catalyzed borylation reactions of primary and secondary alkyl halides,and the B2pin2 acted as bi-boron source for borylation.The high reaction efficiency and mild conditions make the new catalyst system a useful alternative to the recently developed methods for the preparation of alkylboronic esters.
