Crich, David

Cowden, Cameron J., 51 Crandall, Jack K., 29 Crich, David, 64 Crimmins, Michael T., 44 Crouch, R. David, 63 Crounse, Nathan N., 5... 

Crich, David Escalante, Jaime Jiao, Xian-Yun, J. Chem. Soc., Perkin Trans. 2 (3), 627-630 (1997). 

William B. Motherwell and David Crich, Free Radical Chain Reactions in Organic Synthesis, 1991... 

The author is indebted to Drs. Gary F. Filzen and Peter L. Toogood for proofreading the manuscript. Insightful comments and suggestions from Prof. David Crich are greatly appreciated. 

David Crich and coworkers found that preactivation of 4,6-O-benzylidene-protected mannosyl sulfoxide donors at low temperature, followed by addition of a glycosyl acceptor, leads to the stereoselective formation of p-mannosides (Scheme 4.12). The necessity for preactivation at low temperature to obtain good p selectivity led to the notion that a stable intermediate is first formed, which then reacts in a stereoselective manner with the nucleophile to generate p-mannosides. In addition to preactivation, the 4,6-0-benzylidene acetal was found to be indispensable for high... 

Seeking to emulate the benzylidene effect in p-mannosylation [68] (see Section 4.2.6), David Crich and Baolin Wu [87] and Hiromune Ando and coworkers [88] prepared 5-.V,7-(9-oxazinone-protecled thiosialosides 69 and 70 (Fig. 5.5). Unfortunately, both groups found this class of donors to be moderately p-selective under a variety of activating conditions and even in the presence of acetonitrile. 

David Crich [56], elongation of complex p-mannose-containing oligosaccharides (e.g., 10) was demonstrated [54], Apparently, new strategies for glycosidic bond formation can be readily transferred to automated oligosaccharide synthesis. 

David Crich, Department of Chemistry, Wayne State University, Detroit, MI, USA... 

The Ohio State University, Columbus, OH, USA Executive Editors David Crich... 

David Crich Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois... 

Sylvain Aubry, Kaname Sasaki, Indrajeet Sharma, and David Crich... 

Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1 avenue de la Terrasse, 91198 Gif-sur-Yvette, France e-mail david.crich icsn.cnrs-gif.fr I. Sharma and D. Crich... 

Reagents for Radical and Radical Ion Chemistry Edited by David Crich ISBN 978 0 470 06536 5... 

Reagents for Glycoside, Nucleotide, and Peptide Synthesis Edited by David Crich ISBN 0 470 02304 X... 

---