Antimycobacterial Agents. 1. Thio Analogues of Purine
摘要:
Thio analogues of purine, pyridine, and pyrimidine were prepared based on the initial activity screening of several analogues of these heterocycles against Mycobacterium tuberculosis (Mtb). Certain 6-thio-substituted purine analogues described herein showed moderate to good inhibitory activity. In particular, two purine analogues 9-(ethylcarboxymethyl)-6-(decylthio)9H-purine (20) and 9-(ethylcarboxymethyl)-6-(dodecylthio)-9H-purine (21) exhibited MIC values of 1.56 and 0.78 mug/mL respectively against the Mtb H(37)Rv strain. N-9-Substitution apparently enhances the antimycobacterial activity in the purine series described herein.
Palladium-Catalyzed Remote<i>ortho</i>-CH Alkenylation of Alkyl Aryl Sulfones: Access to Densely Functionalized Indane Derivatives
作者:Pablo D. Legarda、Alfonso García-Rubia、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1002/adsc.201501129
日期:2016.3.31
A practical method for the palladium‐catalyzed ortho‐olefination of benzyl and phenethyl 2‐pyridyl sulfones with electron‐deficient alkenes using N‐fluoro‐2,4,6‐trimethylpyridinium triflate ([F+]) as the terminal oxidant is described. The chelating auxiliary (2‐pyridyl)sulfonyl unit was demonstrated to be the key to the success of this reaction, which occurs efficiently with excellent regioselectivity
Antimycobacterial Agents. 1. Thio Analogues of Purine
作者:Ashish K. Pathak、Vibha Pathak、Lainne E. Seitz、William J. Suling、Robert C. Reynolds
DOI:10.1021/jm030389b
日期:2004.1.1
Thio analogues of purine, pyridine, and pyrimidine were prepared based on the initial activity screening of several analogues of these heterocycles against Mycobacterium tuberculosis (Mtb). Certain 6-thio-substituted purine analogues described herein showed moderate to good inhibitory activity. In particular, two purine analogues 9-(ethylcarboxymethyl)-6-(decylthio)9H-purine (20) and 9-(ethylcarboxymethyl)-6-(dodecylthio)-9H-purine (21) exhibited MIC values of 1.56 and 0.78 mug/mL respectively against the Mtb H(37)Rv strain. N-9-Substitution apparently enhances the antimycobacterial activity in the purine series described herein.
Versatile C(sp<sup>2</sup>)−C(sp<sup>3</sup>) Ligand Couplings of Sulfoxides for the Enantioselective Synthesis of Diarylalkanes
作者:William M. Dean、Mindaugas Šiaučiulis、Thomas E. Storr、William Lewis、Robert A. Stockman
DOI:10.1002/anie.201602264
日期:2016.8.16
The reaction of chiral (hetero)aryl benzyl sulfoxides with Grignard reagents affords enantiomerically pure diarylalkanes in up to 98 % yield and greater than 99.5 % enantiomeric excess. This ligand coupling reaction is tolerant to multiple substitution patterns and provides access to diverse areas of chemical space in three operationally simple steps from commercially available reagents. This strategy