.omega.-[(4-Phenyl-2-quinolyl)oxy]alkanoic acid derivatives: a new family of potent LTB4 antagonists
摘要:
A series of omega-[(4-phenyl-2-quinolyl)oxy]alkanoic acid derivatives was prepared which inhibited the binding of the leukotriene B4 to its receptors on guinea pig spleen membranes and on human polymorphonuclear leukocytes. A structure-activity relationship was investigated. The length of the carboxylic acid side chain was important for potent binding activity. The replacement of the oxygen atom at the beginning of the chain with other polar or nonpolar linking groups led to considerable loss of potency, indicating that the oxygen linking atom might be involved in the receptor recognition. Alpha-Substitution on the carboxylic acid side chain led to substantially more potent compounds. Substitution on the phenyl ring and on the quinoline ring was also evaluated.
Palladium-Catalyzed Multi-Component Reactions of<i>N</i>-Tosylhydrazones, 2-Iodoanilines and CO<sub>2</sub>towards 4-Aryl-2-Quinolinones
作者:Song Sun、Wei-Ming Hu、Ning Gu、Jiang Cheng
DOI:10.1002/chem.201604256
日期:2016.12.23
A palladium‐catalyzed three‐component reaction between N‐tosylhydrazones, 2‐iodoanilines and atmospheric pressure CO2 was developed whereby a tandem carbene migration insertion/lactamization strategy afforded 4‐aryl‐2‐quinolinones in moderate to good yields. Notably, a wide range of functional groups were tolerated in this procedure. This protocol features the simultaneous formation of four novel bonds;
SUBSTITUTED BICYCLIC BIS-ARYL COMPOUNDS EXHIBITING SELECTIVE LEUKOTRIENE B 4? ANTAGONIST ACTIVITY, THEIR PREPARATION AND USE IN PHARMACEUTICAL COMPOSITIONS