Synthesis of imidazolin-2-ones by rearrangement of N-carbamoyliminium salts derived from 4-hydroxyimidazolidin-2-ones
作者:T. L. Hough
DOI:10.1002/jhet.5570260603
日期:1989.11
The action of trifluoroacetic acid on 4-hydroxyimidazolidin-2-ones 9a,b,c induces the formation of N-carbamoyliminiumsalts 10a,b,c which rearrange to imidazolin-2-ones 11a,b,c. The reactions proceed in high yield at ambient temperatures.
The invention provides certain substituted pyridines of the Formula (I) or pharmaceutically acceptable salts thereof, wherein R
1
, R
2
, R
3
, R
4
, R
cy
, C
y
, and t are as defined herein. The invention also provides pharmaceutical compositions comprising such compounds, and methods of using the compounds for treating diseases or conditions mediated by Spleen Tyrosine Kinase (Syk) kinase.
The present invention provides compounds useful as modulators, agonists or antagonists of androgen receptor (AR), compositions thereof, and methods of making and using the same.
本发明提供了可用作雄激素受体(AR)的调节剂、激动剂或拮抗剂的化合物、其组合物及其制造和使用方法。
α-(N-Alkylamino)-nitriles
作者:Lawrence J. Exner、Leo S. Luskin、Peter L. deBenneville