Synthesis and structure–activity relationships of 3,5-diarylisoxazoles and 3,5-diaryl-1,2,4-oxadiazoles, novel classes of small molecule interleukin-8 (IL-8) receptor antagonists
摘要:
A novel series of 3,5-diarylisoxazole and 3,5-diaryl-1,2,4-oxadiazole IL-8 antagonists has been identified. These compounds exhibit activity in an IL-8 binding assay as well as in a functional assay of IL-8 induced elastase release from neutrophils. In addition, one of the compounds exhibits oral activity in a rat adjuvant arthritis model. (C) 2004 Elsevier Ltd. All rights reserved.
Highly Efficient One-Pot Preparation of 1,2,4-Oxadiazoles in the Presence of Diazabicycloundecene
作者:Kirill Lukin、Vimal Kishore
DOI:10.1002/jhet.1689
日期:2014.1
New highlyefficient method for the cyclization of acylamidoximes in the presence of diazabicycloundecene was developed and incorporated into a general and practical one‐pot synthesis of 1,2,4‐oxadiazoles (11 examples, 85–97% yields).
Parallel synthesis of 1,2,4-oxadiazoles using CDI activation
作者:Tracy L Deegan、Theodore J Nitz、Diane Cebzanov、Denise E Pufko、John A Porco
DOI:10.1016/s0960-894x(98)00712-4
日期:1999.1
1,2,4-Oxadiazoles have been prepared in parallel using 1,1'-carbonyldiimidazole (CDI) as a reagent for both formation and cyclodehydration of O-acyl benzamidoximes. The use of CDI facilitates parallel purification of the oxadiazole products by simple liquid-liquid extraction and filtration. (C) 1999 Elsevier Science Ltd. All rights reserved.
A Preferred Synthesis of 1,2,4‐Oxadiazoles
作者:Brenda Pipik、Guo‐Jie Ho、J. Michael Williams、David A. Conlon
DOI:10.1081/scc-120034169
日期:2004.12.31
An efficient and high-yielding one-pot synthesis of 1,2,4-oxadiazoles from carboxylic acids and amidoximes is described. Activation of the carboxylic acid using hydroxybenzotriazole (HOBt) and EDC/HCl followed by reaction with an amidoxime generates an oxime ester. Without isolation, the oxime ester is dehydrated to give the oxadiazole ring.