Stereoselective synthesis of Z-acrylonitrile derivatives: catalytic and acetylcholinesterase inhibition studies
作者:Mehtab Parveen、Ali Mohammed Malla、Mahboob Alam、Musheer Ahmad、Shahnawaz Rafiq
DOI:10.1039/c3nj01384g
日期:——
toxic reagents for the synthesis and, more notably, it improved the selectivity for (Z)-acrylonitrile derivatives. By performing DFT calculations, it was found that the (Z)-isomer of compound 2b is stabilized by 2.61 kcal mol−1 more than the (E)-isomer. All of the compounds were tested for acetylcholinesterase (AChE) inhibition. Compounds 2a and 4c, displayed the strongest inhibition, with IC50 values of
Presence of cyclobutane rings in bioactive natural products makes them a popular synthetic target. Most common strategy for synthesizing cyclobutanes is [2+2] cycloaddition, which is usually facilitated by using ultraviolet radiation and catalysts. Herein we report the design and synthesis of densely functionalized cyclobutanes by alleviating these drawbacks and using sunlight. Further, we identified
The thermal cyclization of 3,4-diphenylbuta-1,3-dienyl isocyanates 1, generated in situ from the corresponding azides, was investigated using iodine as a catalyst. Diphenylpyridinones 2, phenylnaphthalenes 3, and indenes 4 were produced viaintramolecularringclosure. The nature of the substituents on the phenyl rings was found to be crucial to the distribution of cyclized products 2–4. The mechanism