Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Guo Tao Fan"'
Publikováno v:
Advanced Synthesis & Catalysis. 359:1295-1300
An enantioselective chloro-O-cyclization of unsaturated N-tosylcarbamates has been developed for the first time using a Cinchona-derived quaternary ammonium salt as the catalyst, the desired enantioenriched chloromethyldioxolanimines were prepared wi
Publikováno v:
Chem. Commun.. 50:12367-12370
A new bromoform reaction of tertiary amines with N,N-dibromosulfonamides or NBS/sulfonamides has been developed. A series of amidines were prepared with moderate to good yields via a Csp(3)-Csp(3) bond cleavage.
Regioselective Bromocyclization of Unsaturated N-Tosylcarbamates Promoted by N,N-Dibromosulfonamides
Publikováno v:
Synlett. 25:1921-1925
Simple and highly regioselective bromo-N-cyclization and bromo-O-cyclization reactions of unsaturated N-tosylcarbamates have been developed. The use of N,N-dibromosulfonamides as brominating reagents plays an important role in these electrophilic cyc
Publikováno v:
Chem. Commun.. 50:13841-13844
An enantioselective bromoamination of allylic alcohols has been developed for the first time using a newly designed cinchona-derived thiourea as the catalyst and N,N-dibromo-4-nitrobenzenesulfonamide as a bromine and amine source.
Autor:
Wen Ying Zhao, Hongbing Liu, Qian Qun Gu, Tian Jiao Zhu, Guo Tao Fan, Yu Chun Fang, Weiming Zhu
Publikováno v:
Natural Product Research. 24:953-957
Three new dioxopiperazine metabolites (1-3), together with two known compounds, N-acetyltyramine (4) and cyclo-(Ala-Val) (5), were isolated from a marine-derived fungus Aspergillus fumigatus Fres. Their structures were established by spectroscopic me
Autor:
Wen Ying Zhao, Guo Tao Fan, Qian Qun Gu, Xiao Xian Han, Weiming Zhu, Tian Jiao Zhu, Hongbing Liu
Publikováno v:
Natural Product Research. 23:203-207
A new gliotoxin analogue (1), as well as four known compounds gliotoxin (2), bisdethiobis (methylthio) gliotoxin (3), bis-N-norgliovictin (4) and didehydrobisdethiobis (methylthio) gliotoxin (5), were isolated from a culture of marine-derived fungus
Publikováno v:
ChemInform. 46
An enantioselective bromoamination of allylic alcohols has been developed for the first time using a newly designed cinchona-derived thiourea as the catalyst and N,N-dibromo-4-nitrobenzenesulfonamide as a bromine and amine source.
Publikováno v:
ChemInform. 46
Simple and highly regioselective bromo-N-cyclization and bromo-O-cyclization reactions of unsaturated N-tosylcarbamates have been developed. The use of N,N-dibromosulfonamides as brominating reagents plays an important role in these electrophilic cyc
Publikováno v:
Chemical Communications; 2014, Vol. 50 Issue 82, p12367-12370, 4p