Synthesis of a novel pseudodisaccharide glycoside as a potential glycosidase inhibitor
作者:Alan H. Haines
DOI:10.1039/a800279g
日期:——
An N-linked pseudodisaccharide 2 containing an inositol moiety in place of a glycopyranosyl residue has been synthesised to mimic the disaccharide unit, 3-O-(α-D-glucopyranosyl)-D-glucopyranose, cleaved by Glucosidase II during glycoprotein processing; an attempt to prepare the analogous 2-N-linked compound 1 as an inhibitor of Glucosidase I led to the novel N-phenyl derivative 10 of 2-amino-2-deoxy-D-glucopyranose.
Enantiospecific synthesis of (6R,7S,8aR)-dihydroxyindolizidine and (6R,7R,8S,8aR)-trihydroxyindolizidine from D-glucose.
作者:David Hendry、Leslie Hough、Anthony C. Richardson
DOI:10.1016/s0040-4039(00)96576-6
日期:1987.1
Enantiospecific syntheses of (6R,7S,8aR)-dihydroxyindolizidine (1) and (6R,7R,8S,8aR)-trihydroxyindolizidine (2) from readily available methyl 2-azido-4,6-O-benzylidene-2-deoxy-α-D-altropyranoside (5) are described.
Site-selective introduction of thiols in unprotected glycosides
作者:Niels R. M. Reintjens、Martin D. Witte、Adriaan J. Minnaard
DOI:10.1039/d3ob00817g
日期:——
converted into a thiol moiety. The transformation involves SN1-substitution of a chloro-azo intermediate, formed by oxidation of the corresponding trityl hydrazone, with a thiol. The prepared deoxythio sugars provide, in combination with the recently developed protecting group-free glycosylation of glycosylfluorides, a protecting group-free synthesis of thioglycosides.
硫代糖苷或S-连接糖苷是重要的糖模拟物。这些硫代糖苷通常通过糖基化脱氧硫代糖受体来制备,脱氧硫代糖受体是通过精心设计的保护基操作合成的。我们发现,通过未受保护的糖类的位点选择性氧化形成的羰基可以转化为硫醇部分。该转化涉及用硫醇对氯偶氮中间体进行S N 1-取代,该中间体是通过相应的三苯甲基腙的氧化而形成的。所制备的脱氧硫代糖与最近开发的糖基氟化物的无保护基糖基化相结合,提供了硫代糖苷的无保护基合成。
Unprotected sugar phosphinimines: A facile route to cyclic carbamates of amino sugars
作者:József Kovács、István Pintér、András Messmer、Gábor Tóth
DOI:10.1016/s0008-6215(00)90755-9
日期:1985.8
HENDRY, DAVID;HOUGH, LESLIE;RICHARDSON, ANTHONY C., TETRAHEDRON LETT., 28,(1987) N 39, 4601-4604
作者:HENDRY, DAVID、HOUGH, LESLIE、RICHARDSON, ANTHONY C.