Practical Asymmetric Synthesis of a Potent Cathepsin K Inhibitor. Efficient Palladium Removal Following Suzuki Coupling
作者:Cheng-yi Chen、Philippe Dagneau、Edward J. J. Grabowski、Renata Oballa、Paul O'Shea、Peppi Prasit、Joël Robichaud、Rich Tillyer、Xin Wang
DOI:10.1021/jo0205614
日期:2003.4.1
A large-scale, chromatography-free synthesis of a potent and selective Cathepsin K inhibitor 1 is reported. The key asymmetric center was installed by addition of (R)-pantolactone to the in situ-generated ketene 4a. The final step of the convergentsynthesis of 1 was completed via Suzuki coupling of aryl bromide 7a with unprotected aryl piperazine boronic acid 13. Residual palladium and iron generated
A Novel Class of Nonpeptidic Biaryl Inhibitors of Human Cathepsin K
作者:Joël Robichaud、Renata Oballa、Peppi Prasit、Jean-Pierre Falgueyret、M. David Percival、Gregg Wesolowski、Sevgi B. Rodan、Donald Kimmel、Colena Johnson、Cliff Bryant、Shankar Venkatraman、Eduardo Setti、Rohan Mendonca、James T. Palmer
DOI:10.1021/jm0301078
日期:2003.8.1
identification of compound (R)-2, a potent human cathepsin K inhibitor (IC(50) = 3 nM) that is selective versus cathepsinsB (IC(50) = 3950 nM), L (IC(50) = 3725 nM), and S (IC(50) = 2010 nM). In an in vitro assay involving rabbit osteoclasts and bovine bone, compound (R)-2 inhibited bone resorption with an IC(50) of 95 nM. It was shown that, unlike some peptidic nitrile inhibitors of cysteine proteases, the
Ultrafast chiral separations for high throughput enantiopurity analysis
作者:Chandan L. Barhate、Leo A. Joyce、Alexey A. Makarov、Kerstin Zawatzky、Frank Bernardoni、Wes A. Schafer、Daniel W. Armstrong、Christopher J. Welch、Erik L. Regalado
DOI:10.1039/c6cc08512a
日期:——
Ultrafast chiral chromatography enables high throughput enantiopurity analysis (over one thousand samples in an 8 h workday) for enantioselective synthesis investigations.