Mitsunobu Reaction Using Basic Amines as Pronucleophiles
作者:Hai Huang、Jun Yong Kang
DOI:10.1021/acs.joc.7b00622
日期:2017.7.7
reaction to include amine nucleophiles to form C–N bonds through the utilization of N-heterocyclic phosphine-butane (NHP-butane) has been developed. Both aliphatic alcohols and benzyl alcohols are suitable substrates for C–N bond construction. Various acidic nucleophiles such as benzoic acids, phenols, thiophenol, and secondary sulfonamide also provide the desired products of esters, ethers, thioether
A novel class of dicarboxylic acid derivatives, the use of these compounds as pharmaceutical compositions, pharmaceutical compositions comprising the compounds and methods of treatment employing these compounds and compositions. The present compounds may be useful in the treatment and/or prevention of conditions mediated by Peroxisome Proliferator-Activated Receptors (PPAR).
Synthesis of Nucleosides through Direct Glycosylation of Nucleobases with 5-<i>O</i>-Monoprotected or 5-Modified Ribose: Improved Protocol, Scope, and Mechanism
作者:A. Michael Downey、Radek Pohl、Jana Roithová、Michal Hocek
DOI:10.1002/chem.201604955
日期:2017.3.17
Simplifying access to synthetic nucleosides is of interest due to their widespread use as biochemical or anticancer and antiviral agents. Herein, a direct stereoselective method to access an expansive range of both natural and synthetic nucleosides up to a gram scale, through direct glycosylation of nucleobases with 5‐O‐tritylribose and other C5‐modified ribose derivatives, is discussed in detail.
Compounds useful in the treatment of conditions mediated by peroxisome proliferator-activated receptors (PPAR)
申请人:Novo Nordisk A/S
公开号:US06248781B1
公开(公告)日:2001-06-19
The present invention relates to compounds of formula (I)
wherein R1, R2, R3, R4, R5, R6, R7, R8, Ar, X, Q, A, Y and Z are as defined in the specification. These compounds are useful in the treatment and/or prevention of conditions mediated by nuclear receptors, in particular the Peroxisome Proliferator-Activated Receptors (PPAR).
pharmacologically active targets. Regioselective γ-C–N bond formation is achieved with simple enone substrates through controlled dienolate reactivitytoward azodicarboxylate electrophiles. The amination reaction occurs readily with sterically demanding nucleophiles and is stereoselective.