The first enantioselective Friedel-Crafts alkylation-acetalization-cascade of naphthols with alpha,beta-unsaturated cyclic ketones and 1H-inden-1-ones was realized. 9-Amino(9-deoxy)epi-quinine A was the catalyst of choice for the realization of polycyclic structures with high enantiocontrol.
PIPERAZINYLPIPERIDINE DERIVATIVES AS CHEMOKINE RECEPTOR ANTAGONISTS
申请人:Xue Chu-Biao
公开号:US20120295912A1
公开(公告)日:2012-11-22
The present invention relates to compounds of Formula I:
wherein variable substituents are defined herein, that modulate the activity of or bind to chemokine receptors such as CCR5. In some embodiments, the compounds of the invention are selective for CCR5. The compounds can be used, for example, to treat diseases associated with chemokine receptor expression or activity such as inflammatory diseases, immune diseases and viral infections.
A novel one-pot thermal cycloaddition of two indenones followed by a decarbonylation and dehydrogenation cascade afforded benzo[c]fluorenones regioselectively. Various substituted indenone derivatives were converted into their corresponding benzo[c]fluorenones in good to excellent yields.
新颖的一锅法将两个茚满进行热环加成,然后进行脱羰和脱氢级联反应,从而选择性地提供了苯并[ c ]芴酮。各种取代的茚满酮衍生物均以良好或优异的产率转化为相应的苯并[ c ]芴酮。