99541-23-8

Upstream product

• 99571-46-7 2',3'-di-O-benzyl derivative of 1,6-anhydro-4',6'-O-benzylidenecellobiose 
• 99541-22-7 O-(2,3-di-O-benzyl-4,6-O-benzylidene-β-D-glucopyranosyl)-(1->4)-1,6:2,3-dianhydro-β-D-mannopyranose 
• 108-24-7 acetic anhydride 
• 135415-93-9 (1R,2S,3R,4R,5R)-4-Azido-2-((4aR,6S,7R,8S,8aR)-7,8-bis-benzyloxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yloxy)-6,8-dioxa-bicyclo[3.2.1]octan-3-ol 

Downstream Products

• 87907-02-6 O-(methyl 2,3-di-O-benzyl-4-O-(chloroacetyl)-β-D-glucopyranosyluronate)-(1->4)-3-O-acetyl-1,6-anhydro-2-azido-2-deoxy-β-D-glucopyranose 
• 99541-26-1 O-(methyl 2,3-di-O-benzyl-β-D-glucopyranosyluronate)-(1->4)-3-O-acetyl-1,6-anhydro-2-azido-2-deoxy-β-D-glucopyranose 
• 100752-71-4 (2S,3S,4S,5R,6R)-6-((1R,2S,3R,4R,5R)-3-Acetoxy-4-azido-6,8-dioxa-bicyclo[3.2.1]oct-2-yloxy)-4,5-bis-benzyloxy-3-(2-chloro-acetoxy)-tetrahydro-pyran-2-carboxylic acid 
• 99541-25-0 O-(2,3-di-O-benzyl-4-O-(chloroacetyl)-6-O-trityl-β-D-glucopyranosyl)-(1->4)-3-O-acetyl-1,6-anhydro-2-azido-2-deoxy-β-D-glucopyranose 
• 100752-72-5 (2S,3S,4S,5R,6R)-3-((2R,3R,4R,5S,6R)-3-Azido-4,5-bis-benzyloxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-6-((1R,2S,3R,4R,5R)-4-azido-3-hydroxy-6,8-dioxa-bicyclo[3.2.1]oct-2-yloxy)-4,5-bis-benzyloxy-tetrahydro-pyran-2-carboxylic acid 
• 100752-65-6 O-(2-azido-3,4-di-O-benzyl-2-deoxy-α-D-glucopyranosyl)-(1->4)-O-(methyl 2,3-di-O-benzyl-β-D-glucopyranosyluronate)-(1->4)-1,6-anhydro-2-azido-2-deoxy-β-D-glucopyranose 
• 99541-27-2 O-(6-O-acetyl-2-azido-3,4-di-O-benzyl-2-deoxy-α-D-glucopyranosyl)-(1->4)-O-(methyl 2,3-di-O-benzyl-β-D-glucopyranosyluronate)-(1->4)-3-O-acetyl-1,6-anhydro-2-azido-2-deoxy-β-D-glucopyranose 
• 1374030-67-7 6-O-acetyl-2-azido-2-deoxy-3,4-di-O-benzyl-α-D-glucopyranosyl-(1→4)-O-[benzyl 2,3-O-dibenzyl-β-D-glucopyranosyluronate]-(1→4)-O-2-azido-2-deoxy-3,6-di-O-acetyl-1-O-trichloroacetimidoyl-β-D-glucopyranose 
• 1374030-65-5 6-O-acetyl-2-azido-2-deoxy-3,4-di-O-benzyl-α-D-glucopyranosyl-(1→4)-O-[benzyl 2,3-O-dibenzyl-β-D-glucopyranosyluronate]-(1→4)-O-2-azido-2-deoxy-3,6-di-O-acetyl-β-D-glucopyranose 
• 1374030-63-3 6-O-acetyl-2-azido-2-deoxy-3,4-di-O-benzyl-α-D-glucopyranosyl-(1→4)-O-[benzyl 2,3-O-dibenzyl-β-D-glucopyranosyluronate]-(1→4)-O-2-azido-2-deoxy-1,3,6-tri-O-acetyl-β-D-glucopyranose 
• 1374030-61-1 EDC-Trimer-CB 
• 1374030-56-4 Benzylester-Anhydro-Cellobiose DCBB 
• 99541-24-9 O-(2,3-di-O-benzyl-β-D-glucopyranosyl)-(1->4)-3-O-acetyl-1,6-anhydro-2-azido-2-deoxy-β-D-glucopyranose 

Relevant academic research and scientific papers

AN EFFICIENT AND SCALABLE PROCESS FOR THE MANUFACTURE OF FONDAPARINUX SODIUM

The present invention relates to a process for the synthesis of the Factor Xa anticoagulent Fondaparinux and related compounds. The invention relates, in addition, to efficient and scalable processes for the synthesis of various intermediates useful in the synthesis of Fondaparinux and related compounds.

Synthesis, from cellobiose, of a trisaccharide closely related to the GlcNAc----GlcA----GlcN segment of the antithrombin-binding sequence of heparin.

O-(2-Deoxy-2-sulfamido-6-O-sulfo-alpha-D-glucopyranosyl)-(1----4)- O-(beta-D- glucopyranosyluronic acid)-(1----4)-1,6-anhydro-2-deoxy-2-sulfamido-6-O-sulfo-beta-D-gl ucopyranose pentasodium salt (14) was synthesized as a heparin-related oligosaccharide. The glycosyl acceptor (derived from cellobiose) and a glycosyl donor, 6-O-acetyl-2-azido-3,4-di-O-benzyl-2-deoxy-alpha-D-glucopyranosyl bromide, were coupled in the presence of mercuric bromide and molecular sieves 4A to afford a 69% yield of fully protected trisaccharide, namely, O-(6-O-acetyl-2-azido-3,4-di-O-benzyl-2-deoxy-alpha-D-glucopyranosyl)-(1 ----4)- O-(methyl 2,3-di-O-benzyl-beta-D-glucopyranosyluronate)-(1----4)-3-O-acetyl- 1,6-anhydro-2 - azido-2-deoxy-beta-D-glucopyranose (10), which was converted into the partially sulfated trisaccharide 14. Compound 10 also underwent acetolysis to afford the glycosyl acetate, for further elongation of the glycosyl chain.