Convenient synthesis of arylpropargyl aldehydes and 4-aryl-3-butyn-2-ones from arylacetylenes and amide acetals
作者:Ka Young Lee、Mi Jung Lee、Saravanan GowriSankar、Jae Nyoung Kim
DOI:10.1016/j.tetlet.2004.04.193
日期:2004.6
The reaction of arylacetylenes 1 and N,N-dimethylformamide dimethylacetal (2a, DMF-DMA) afforded the corresponding arylpropargyl aldehydes 3 in moderate yields. Similarly, the reaction of 1 and N,N-dimethylacetamide dimethylacetal (2b, DMA-DMA) gave 4-aryl-3-butyn-2-ones 4.
Activating Pyrimidines by Pre-distortion for the General Synthesis of 7-Aza-indazoles from 2-Hydrazonylpyrimidines via Intramolecular Diels–Alder Reactions
作者:Vincent Le Fouler、Yu Chen、Vincent Gandon、Vincent Bizet、Christophe Salomé、Thomas Fessard、Fang Liu、K. N. Houk、Nicolas Blanchard
DOI:10.1021/jacs.9b07037
日期:2019.10.9
unreactive partners in Diels-Alder cycloadditions with alkenes and alkynes, and only reactions under drastic conditions have previously been reported. We describe how 2-hydrazonylpyrimidines, easily obtained in two steps from commercially available 2-halopyrimidines can be exceptionally activated by trifluoroacetylation. This allows a Diels-Alder cycloaddition under very mild reaction conditions, leading
[EN] SMART PEPTIDES AND TRANSFORMABLE NANOPARTICLES FOR CANCER IMMUNOTHERAPY<br/>[FR] PEPTIDES INTELLIGENTS ET NANOPARTICULES TRANSFORMABLES POUR UNE IMMUNOTHÉRAPIE ANTICANCÉREUSE
申请人:UNIV CALIFORNIA
公开号:WO2021030743A2
公开(公告)日:2021-02-18
The present invention provides a compound of formula (I): A-B-C (I), wherein A is a hydrophobic moiety; B is a peptide, wherein the peptide forms a beta-sheet; and C is a hydrophilic targeting ligand, wherein the hydrophilic targeting ligand is a LLP2A prodrug, LLP2A, LXY30, LXW64, DUPA, folate, a LHRH peptide, a HER2 ligand, an EGFR ligand, or a toll-like receptor agonist CpG oligonucleotides. The present invention also provides nanocarriers comprising compounds of the present invention, nanofibril formation from the nanocarriers, and methods of using the nanocarriers for treating diseases and imaging.
A practical synthesis of benzothiophenes via visible-light-promoted cyclization of disulfides and alkynes
作者:Lin-Miao Ye、Lu Qian、Yan-Yan Chen、Xue-Jing Zhang、Ming Yan
DOI:10.1039/c6ob02461k
日期:——
Visible-light-promoted radical cyclization of disulfides and alkynes provided benzothiophenes in good yields.
可见光促进的二硫化物和炔烃的自由基环化反应可以高产得苯并噻吩。
Pyrazine- and pyridine-substituted prop-2-yn-1-ols, but-3-yn-2-ols, and but-3-yn-2-ones – purification, stability, and handling revised
作者:Claudia Schindler、Carola Schulzke
DOI:10.1007/s10593-016-1811-0
日期:2015.11
A short series of alkynyl-substituted pyrazine and pyridine derivatives was synthesized by the palladium-catalyzed Sonogashiracross-couplingreactions between arylhalides and alkynes. All the products are either white solids or colorless liquids, which is partly in contrast to previous reports. After purification, a color change or intense darkening was observed, in some cases starting almost immediately