The first palladium‐catalyzed direct benzylic C(sp3)−H chalcogenation with diaryl disulfides and diphenyl diselenide has been established. The coupling reaction proceeds between the thioether radical and palladiumcycle intermediate. Picolinamide serves as an excellent directing group for the C−H activation of benzylic C(sp3)−H and can be easily removed. The current protocol exhibits a relatively
A highly efficient, selective synthesis of benzyl esters by palladium catalysis is developed through the bidentate directing group assisted functionalization of multiple C(sp3)–H bonds.
作者:Laura H. D. Ghandhi、Stefan Bidula、Christopher M. Pask、Rianne M. Lord、Patrick C. McGowan
DOI:10.1002/cmdc.202100159
日期:2021.10.15
Bis(N-picolinamide)cobalt(II) complexes containing trans isothiocyanate ligands are reported to have significantly enhanced activity toward fungal species, when compared the cis complexes. They display >80 % growth inhibition of fungal strains and no reported toxicity toward bacterial species or mammalian cells.
[EN] IMMUNOMODULATORS, COMPOSITIONS AND METHODS THEREOF<br/>[FR] IMMUNOMODULATEURS, COMPOSITIONS ET PROCÉDÉS ASSOCIÉS
申请人:BETTA PHARMACEUTICALS CO LTD
公开号:WO2020011243A1
公开(公告)日:2020-01-16
Disclosed are compounds of Formula I, methods of using the compounds as immunomodulators, and pharmaceutical compositions comprising such compounds. The compounds are useful in treating, preventing or ameliorating diseases or disorders such as cancer or infections. (I)
A general palladium catalyzed acetoxylation of benzylicC–H bonds has been developed. Picolinamides serve as an excellent directinggroup for the C–H activation of benzylic methyls. A wide range of 2-amino benzyl alcohol analogues were synthesized in good yields. The products demonstrated broad synthetic utilities toward various benzo-fused heterocycles. Mechanistic studies revealed the key rate-limiting