Six-Step Syntheses of (−)-1-Deoxyaltronojirimycin and (+)-1-Deoxymannonojirimycin from <i>N</i>-<i>Z</i>-<i>O</i>-TBDPS-<scp>l</scp>-serinal
作者:Meire Y. Kawamura、Alexánder G. Talero、João V. Santiago、Edson Garambel-Vilca、Isac G. Rosset、Antonio C. B. Burtoloso
DOI:10.1021/acs.joc.6b01575
日期:2016.11.4
Highly stereoselective six-step syntheses of (−)-1-deoxyaltronojirimycin (altro-DNJ) and (+)-1-deoxymannojirimycin (manno-DNJ) from N-Cbz-O-TBDPS-l-serinal are described. Key transformations involve a two-step preparation of a functionalized dihydropyridin-3-one as a common intermediate followed by Luche reduction and dihydroxylation (for altro-DNJ). The same sequence employing an epoxidation/epoxide
Synthesis of <scp>l</scp>-<i>altro</i>-1-Deoxynojirimycin, <scp>d</scp>-<i>allo-</i>1-Deoxynojirimycin, and <scp>d</scp>-<i>galacto-</i>1-Deoxynojirimycin from a Single Chiral Cyanohydrin
作者:Adrianus M. C. H. van den Nieuwendijk、Mark Ruben、Sander E. Engelsma、Martijn D. P. Risseeuw、Richard J. B. H. N. van den Berg、Rolf G. Boot、Johannes M. Aerts、Johannes Brussee、Gijs A. van der Marel、Herman S. Overkleeft
DOI:10.1021/ol101556k
日期:2010.9.3
The chemoenzymatic synthesis of three 1-deoxynojirimycin-type iminosugars is reported. Key steps in the synthetic scheme include a Dibal reduction−transimination−sodium borohydride reduction cascade of reactions on an enantiomerically pure cyanohydrin, itself prepared employing almond hydroxynitrile lyase (paHNL) as the common precursor. Ensuing ring-closing metathesis and Upjohn dihydroxylation afford
Synthesis of Eight 1-Deoxynojirimycin Isomers from a Single Chiral Cyanohydrin
作者:Adrianus M. C. H. van den Nieuwendijk、Richard J. B. H. N. van den Berg、Mark Ruben、Martin D. Witte、Johannes Brussee、Rolf G. Boot、Gijsbert A. van der Marel、Johannes M. F. G. Aerts、Herman S. Overkleeft
DOI:10.1002/ejoc.201200377
日期:2012.6
configurational 1-deoxynojirimycin isomers have been synthesized starting from a chiral cyanohydrin as the common precursor. The cyanohydrin chiral pool building block is easily accessible in large quantities by using almond hydroxynitrile lyase as the chiral catalyst in condensing hydrogen cyanide and crotonaldehyde. Our work complements the large body of literature on the synthesis of 1-deoxynojirimycin derivatives