Very often ligands are anionic or neutral species. Cationic ones are rare, and, when used, the positively charged groups are normally appended to the periphery of the ligand. Here, we describe a dicationic phosphine with no spacer between the phosphorus atom and the two positively charged groups. This structural feature makes its donor ability poorer than that of phosphites and only comparable to extremely
[EN] BIARYL PHOSPHODIESTERASE INHIBITORS<br/>[FR] INHIBITEURS BIARYLE DES PHOSPHODIESTÉRASES
申请人:LEO PHARMA AS
公开号:WO2011134468A1
公开(公告)日:2011-11-03
Novel biaryl compounds with phosphodiesterase inhibitory activity of the general formula (I), wherein R1, R2, R3, X, Y, Z1, Z2, Z3, and Z4 have the meanings defined herein, as well as their use as therapeutic agents in the treatment of inflammatory diseases and conditions.
Biomimetic Synthesis of Santalin A,B and Santarubin A,B, the Major Colorants of Red Sandalwood
作者:Sebastian Strych、Dirk Trauner
DOI:10.1002/anie.201302317
日期:2013.9.2
Better late than never! Almost 200 years after Pelletier's pioneering studies on the chemical constituents of redsandalwood, the major santalins and santarubins have been synthesized. This efficient approach integrates a Knochel isoflavonoid synthesis with Friedel–Crafts allylations or olefin metatheses, and a final biomimetic reaction cascade that furnishes the venerable benzoxanthenone dyes in a
The present invention relates to boron containing compounds of Formula (I)
X—Y—Z Formula (I)
that inhibit phosphodiesterase 4 (PDE4). The invention also encompasses pharmaceutical compositions containing these compounds and methods for treating diseases, conditions, or disorders ameliorated by inhibition of PDE4.
Bis(cyclopropenium)phosphines: Synthesis, Reactivity, and Applications
作者:Gerlinde Mehler、Pawel Linowski、Javier Carreras、Alessandro Zanardi、Jonathan W. Dube、Manuel Alcarazo
DOI:10.1002/chem.201601759
日期:2016.10.17
substituent pattern on the catalytic activity of the metalcomplexes thereof derived is also studied. Whereas sterically demanding biarylgroups directly attached to the phosphorus atom seem to facilitate elementary steps such as the product release from the catalyst, longchain dialkylamino groups on the cyclopropenium units maximize the catalysts solubility and, thus, allow the use of typical apolar