Controlling Selectivity for Cycloadditions of Nitrones and Alkenes Tethered by Benzimidazoles: Combining Experiment and Theory
作者:Liping Meng、Selina C. Wang、James C. Fettinger、Mark J. Kurth、Dean J. Tantillo
DOI:10.1002/ejoc.200801211
日期:2009.4
Herein we describe a combined experimental/theoretical study on the effects of substituents on regio- and stereoselectivity in intramolecular 1,3-dipolar cycloadditions of nitrones and alkenestethered by benzimidazoles. By employing a large substituent at position R2 or R3, complete selectivity was achieved for either the fused or bridged cycloadduct, respectively. In addition, these cycloadducts
The present invention relates to compounds that bind to chemokine receptors, and having the formula
1
wherein each A, X, Y, R
1
, R
2
and R
3
are substituents. The present invention also relates to methods of using such compounds, such as in treating HIV infection and inflammatory conditions such as rheumatoid arthritis. Furthermore, the present invention relates to methods to elevate progenitor and stem cell counts, as well as methods to elevate white blood cell counts, using such compounds.
The present invention relates to compounds that bind to chemokine receptors, and having the formula
wherein each A, X, Y, R
1
, R
2
and R
3
are substituents. The present invention also relates to methods of using such compounds, such as in treating HIV infection and inflammatory conditions such as rheumatoid arthritis. Furthermore, the present invention relates to methods to elevate progenitor and stem cell counts, as well as methods to elevate white blood cell counts, using such compounds.