Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Richard K. Bellingham"'
Autor:
Richard C. D. Brown, Vachiraporn Ajavakom, Potchanee Pandokrak, Sofia S. Salim, Gamal A. I. Moustafa, Richard K. Bellingham, Joseph T. Hill-Cousins, Anawat Ajavakom
Publikováno v:
Synlett. 33:1453-1457
A Grubbs II catalyst mediated ring-closing metathesis (RCM) of monobrominated dienes is reported to proceed in moderate to good yields (40–80%) where the linking chain contains five atoms, leading to carbocyclic and heterocyclic seven-membered brom
Autor:
Iain R. Miller, Neville J. McLean, Gamal A. I. Moustafa, Vachiraporn Ajavakom, Stephen C. Kemp, Richard K. Bellingham, Nicholas P. Camp, Richard C. D. Brown
Publikováno v:
The Journal of organic chemistry. 87(2)
An asymmetric synthetic route to (-)-galanthamine (
Autor:
Erica Vit, Jerome F. Hayes, Francois-Rene Alexandre, Cyril B. Dousson, Christophe Claude Parsy, David D. Pascoe, Catherine Caillet, Marie-Pierre Lioure, Neil Hodnett, Elodie Rosinovsky, John Edward Richardson, Guillaume Bret, Stéphanie Bot, Agnès Amador, Gary T. Borrett, Bernadette Choudary, Arlène Roland, Daniel Da Costa, Alan Ironmonger, John D. Hayler, Augustine Ochen, Séverine Bonaric, David Colclough, Richard K. Bellingham
Publikováno v:
Organic Process Research & Development. 22:200-206
A new and improved synthetic route to an intermediate in the synthesis of the phosphinate ester GSK2248761A is described. In the key step, we describe the first process-scale example of a palladium-catalyzed phosphorus–carbon coupling to give the e
Autor:
Sofia S. Salim, Richard C. D. Brown, Youssef M. Bakar, Joseph T. Hill-Cousins, Mark E. Light, Richard K. Bellingham
Publikováno v:
Tetrahedron. 70:3700-3706
Ring-closing metathesis (RCM) and sequential Yb(OTf)3 promoted Diels–Alder reactions of sulfamide-linked enynes proceeded selectively in one-pot to afford a series of bicyclic and tricyclic sulfamides. Excellent levels of diastereoselectivity are o
Autor:
John F. Keily, Richard C. D. Brown, Richard K. Bellingham, Mark E. Light, Amanda C. Cutter, Iain R. Miller
Publikováno v:
Organic Letters. 13:3988-3991
Short routes to enantiomerically pure indolizidine and quinolizidine alkaloids have been developed using imino-aldol reactions of enolates derived from phenyl 5-chlorovalerate. High levels of syn selectivity (dr ∼13-16:1) were obtained using lithiu
Autor:
Andrew H. Gordon, Michael Urquhart, Matthew J. Peterson, Steve O. Moore, Richard K. Bellingham, A. Mark Buswell, Amin Shamji, Mike Sasse, Bernie M. Choudary
Publikováno v:
Organic Process Research & Development. 14:1254-1263
The discovery and development of an efficient manufacturing route to the CENP-E inhibitor 3-chloro-N-{(1S)-2-[(N,N-dimethylglycyl)amino]-1-[(4-{8-[(1S)-1-hydroxyethyl]imidazo[1,2-a]pyridin-2-yl}phenyl)methyl]ethyl}−4-[(1-methylethyl)oxy]benzamide (
Autor:
Laurence C. Powling, Nigel Hussain, Richard K. Bellingham, John S. Carey, David O. Morgan, Paul Oxley
Publikováno v:
Organic Process Research & Development. 8:279-282
A modified Knorr pyrrole reaction is described which may have practical benefits for the large-scale synthesis of SB-342219. The use of zinc to reduce a phenylhydrazone is replaced by the hydrogenation of the corresponding oxime to provide a common a
Publikováno v:
Organic Letters. 5:3403-3406
[reaction: see text] Ring-closing metathesis (RCM) of vinyl fluoride-containing dienes in the presence of ruthenium alkylidene carbene complex 11 proceeded efficiently to give six- and seven-membered cyclic vinyl fluorides. The RCM reaction was used
Autor:
Richard C. D. Brown, Mark E. Light, Youssef M. Bakar, Joseph T. Hill-Cousins, Richard K. Bellingham, Sofia S. Salim
Publikováno v:
ChemInform. 45
A one-pot procedure for the formation of polycyclic sulfamides via an enyne ring-closing metathesis—Diels—Alder sequence is developed, giving rise to the endo-adducts as the sole observed diastereoisomers.
Autor:
Laurence C. Powling, David S. Ennis, David Lathbury, Mark A. Armitage, Paul D. Blackler, Nigel Hussain, Graham H. Oakes, Noah O'Connor, David O. Morgan, Richard K. Bellingham, and Stephen C. Passey, Karl W. Ace
Publikováno v:
Organic Process Research & Development. 5:479-490
A literature route to 1-(2-{4-[(E)-1-(4-iodophenyl)-2-phenyl-but-1-enyl]phenoxy}ethyl)pyrrolidine (idoxifene) has been modified to tackle various scale-up issues and provide initial supplies. A new highly efficient, robust, and stereoselective manufa