Solution-phase combinatorial synthesis of isoxazolines and isoxazoles using [2+3] cycloaddition reaction of nitrile oxides
作者:Kyung Ho Kang、Ae Nim Pae、Kyung Il Choi、Yong Seo Cho、Bong Young Chung、Jee Eun Lee、Sun Ho Jung、Hun Yeong Koh、Hee-Yoon Lee
DOI:10.1016/s0040-4039(00)02180-8
日期:2001.2
An efficient way to construct a library of isoxazoles and isoxazolines was developed by solution-phase 1,3-dipolar cycloaddition reaction of nitrile oxides with olefins and alkynes followed by precipitation of the products as HCl salts.
Rapid Discovery and Structure−Activity Profiling of Novel Inhibitors of Human Immunodeficiency Virus Type 1 Protease Enabled by the Copper(I)-Catalyzed Synthesis of 1,2,3-Triazoles and Their Further Functionalization
作者:Matthew Whiting、Jonathan C. Tripp、Ying-Chuan Lin、William Lindstrom、Arthur J. Olson、John H. Elder、K. Barry Sharpless、Valery V. Fokin
DOI:10.1021/jm060754+
日期:2006.12.1
Building from the results of a computational screen of a range of triazole-containing compounds for binding efficiency to human immunodeficiency virus type 1 protease (HIV-1-Pr), a novel series of potent inhibitors has been developed. The copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC), which provides ready access to 1,4-disubstituted-1,2,3-triazoles, was used to unite a focused library of azide-containing
A sustainable green methodology for the ‘one-pot’ syntheses of 1,2,3-triazolo 3-hydroxy-2-oxindoles from isatin–epoxides has been employed via a CuAAC reaction.
It has been found that compounds of the structure ##STR1## wherein "pyr" stands for 2-, 3-, or 4-pyridyl; Z is CO or (CH.sub.2).sub.n ; n is 0, 1 or 2; R is hydrogen, halogen, loweralkyl, loweralkyloxy, nitro, or hydroxymethyl; and R' is hydrogen or halogen are excellent insect ovicides.
The invention provides compounds of Formula (I) or a pharmaceutically acceptable salt or ester thereof wherein the symbols have meaning as defined, which are inhibitors of cathepsin K and find use pharmaceutically for treatment of diseases and medical conditions in which cathepsin K is implicated, e.g. various disorders including inflammation, rheumatoid arthritis, osteoarthritis, osteoporosis and tumors.