Facile route for the synthesis of the iminosugar nucleoside (3R,4R)-1-(pyren-1-yl)-4-(hydroxymethyl)pyrrolidin-3-ol
作者:Allam A Hassan、Per T Jørgensen、Paul C Stein、M.E Abdel Fattah、Ibrahim I.A El Gawad、Erik B Pedersen
DOI:10.1016/j.carres.2004.03.022
日期:2004.6
N-(Pyren-1-yl)-(3R,4S)-4-[(1S,2R)-1,2,3-trihydroxypropyl]pyrrolidin-3-ol (4) was obtained in 36% yield from 3-deoxy-3-C-formyl-1,2:5,6-di-O-isopropylidene-alpha-D-allofuranose (3) by combined hydrolysis and aminoalkylation reactions with 1-aminopyrene in a one-pot reaction. Cleavage reactions of the exocyclic triol chain in 4 with NaIO4 and NaBH4 resulted in iminosugars 7 and 8, which are analogues of the faranose forms of 2-deoxy-D-allose and of 2-deOXY-D-ribose, the latter analogue N-(pyren-1-yl)(3R,4R)-4-(hydroxymethyl)pyrrolidin-3-ol (8) being formed in 83% yield. (C) 2004 Elsevier Ltd. All rights reserved.