Stereoselective Synthesis of 3-Amino-3-deoxy-aldohexoses by Aldol Condensation of Tricarbonyliron-α-Aminodienone Complexes: Total Synthesis of Multiprotected Kanosamine
作者:Laurence Miesch、Tania Welsch、Loic Toupet
DOI:10.1055/s-0030-1258320
日期:2011.1
enantiomerically pure ketol diastereoisomers. From there, multiprotected kanosamine and 3-amino-3-deoxy-d-altrose were obtained in a few high-yielding steps, namely stereoselective reduction, protection, decomplexation, and ozonolysis. α-aminodienone-tricarbonyliron complexes - divalent tin enol ether - aldol reactions - kanosamine - amino sugars
A general approach to the synthesis of 2,3-di-O-protected derivatives of d-glyceraldehyde
作者:Janusz Jurczak、Tomasz Bauer、Marek Chmielewski
DOI:10.1016/0008-6215(87)80154-4
日期:1987.7
Stereoselective Synthesis of<i>anti</i>-<i>N</i>-Protected 3-Amino-1,2-epoxides by Nucleophilic Addition to<i>N</i>-<i>tert</i>-Butanesulfinyl Imine of a Glyceraldehyde Synthon<sup>†</sup>
作者:Scott S. Harried、Michael D. Croghan、Matthew R. Kaller、Patricia Lopez、Wenge Zhong、Randall Hungate、Paul J. Reider
DOI:10.1021/jo900643b
日期:2009.8.21
A di-O-TBS protected glyceraldellyde synthon was condensed with Ellman's reagent to form a bench-stable N-tert-butanesulfinyl imine 6, which served as a common intermediate for the stereoselective introduction Of various R groups. The Ellman adducts were converted to useful Multifunctional intermediates 18a-i in one pot. The alcohols 18a-i were efficiently elaborated to both known and novel anti-N-protected-3-amino-1,2-epoxides in two steps. Compound 2a is a key intermediate toward HIV protease inhibitors.
A β-Lactam-Based Stereoselective Access to β,γ-Dihydroxy α-Amino Acid-Derived Peptides with Either α,β-Like or Unlike Configurations
A concise access to alpha,beta-dihydroxy alpha-amino acid-derived N-carboxyanhydrides (NCAs) with either like or unlike relative configuration is described. The key steps of the synthetic route are the preparation of the nonracemic 4-alkenyl beta-lactams, through either Horner-type olefination of a common 4-formyl beta-lactam or the Corey-Winter alkene synthesis applied to 4-dihydroxyalkyl beta-lactams