Concise and practical synthesis of (2S,3R,4R,5R) and (2S,3R,4R,5S)-1,6-dideoxy-1,6-iminosugars
摘要:
The syntheses of (2S,3R,4R,5R) and (2S,3R,4R,5S)-1,6-dideoxy-1,6 iminosugars 1a and 1b, respectively, from D-glucose are described. The key transformations in this reaction sequence include regio-selective epoxide ring opening with N-benzylamine followed by intramolecular reductive amination of amino-aldehyde. (C) 2003 Published by Elsevier Science Ltd.
Polyhydroxylated piperidines and azepanes from D-mannitol synthesis of 1-deoxynojirimycin and analogues
作者:Lydie Poitout、Yves Le Merrer、Jean-Claude Depezay
DOI:10.1016/s0040-4039(00)76888-2
日期:1994.5
D-mannitol and L-iditol bis-epoxides, easily obtained fromD-mannitol, are convenient substrates for the synthesis of polyhydroxylated piperidines and azepanes, via a nucleophilic opening of one epoxy function followed by a spontaneous intramolecular ring closure. Using this strategy 1-deoxynojirimycin and analogues were prepared.
Synthesis of azasugars as potent inhibitors of glycosidases
作者:Yves Le Merrer、Lydie Poitout、Jean-Claude Depezay、Isabelle Dosbaa、Sabine Geoffroy、Marie-José Foglietti
DOI:10.1016/s0968-0896(96)00266-0
日期:1997.3
A series of enantiomerically pure azasugars (2,5-dideoxy-2, 5-imino-D-mannitol, 1-deoxynojirimycin, 1-deoxymannojirimycin, and related compounds) was synthesized from D-mannitol via aminoheterocyclization of C2-symmetric bis-epoxides and subsequently followed by ring isomerization in few cases. These compounds have been evaluated as inhibitors of several glycosidases (alpha- and beta-D-glucosidases
C2-Symmetrical tetrahydroxyazepanes as inhibitors of glycosidases and HIV/FIV proteases
作者:Xinhua Qian、Francisco Morís-Varas、Michael C. Fitzgerald、Chi-Huey Wong
DOI:10.1016/s0968-0896(96)00218-0
日期:1996.12
C2-Symmetrical tetrahydroxyazepanes were synthesized as inhibitors for glycosidases. Tetrahydroxyazepane 1 is a non-specific inhibitor of various glycosidases, while compounds 2, 3 and 4 specifically inhibit beta-N-acetylglucosaminidase, beta-glucosidase, and alpha-fucosidase, respectively, with Ki in the micromolar range. Compound 1 is not an inhibitor of HIV/FIV proteases, but its 3,6-difluorobenzyl
Syntheses of tetrahydroxyazepanes from chiro-inositols and their evaluation as glycosidase inhibitors
作者:Gavin F Painter、Paul J Eldridge、Andrew Falshaw
DOI:10.1016/j.bmc.2003.10.003
日期:2004.1
Two pairs of C(2)-symmetric tetrahydroxyazepanes [(-), (+)-1 and (-), (+)-2] have been synthesized from the enantiomeric chiro-inositols and evaluated as glycosidase inhibitors. Alternative syntheses of ido-tetrahydroxyazepanes (-)- and (+)-2 from myo-inositol were also developed. The key synthetic transformations were glycol fission and cyclization of the derived dialdehydes by double reductive amination