cas 156726-98-6, 5-(Acetylamino)-5-deoxy-3-S-phenyl-3-thio-D-erythro-α-L-gluco-2-nonulopyranosonic Acid Methyl Ester 2,4,7,8,9-Pentaacetate | Articles data ｜lookchem

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156726-98-6

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Highly stereoselective α-sialylation. Synthesis of GM3-saccharide and a bis-sialic acid unit
The novel sialyl donor methyl [ethyl 5-acetamido-4,7,8,9-tetra-O-acetyl-2-thio-3-(phenylthio)-2,3,5-trideox y-D-erythro-α-L-gluco-2-nonulopyranosid]onate (6) was synthesized in six steps from N-acetylneuraminic acid in an overall yield of 47%. Donor 6 was shown to be superior to conventional sialyl donors in that the sialylation yields were higher, even with sterically hindered and unreactive sialyl acceptors, and the α/β-selectivity was virtually complete.
Ercegovic,Magnusson
p. 3378 - 3384
(2007/10/02)

A New N-Acetylneuraminic Acid Donor for Highly Stereoselective α-Sialylation
The new sialyl donor 6 (prepared from N-acetylneuraminic acid in 44percent yield over six steps) effects clean α-sialylation of 2-(trimethylsilyl)ethyl 2,3,6,2',4',6'-hexabenzyl-β-D-lactoside in 67percent yield.
Ercegovic, Teddy,Magnusson, Goeran
p. 831 - 832
(2007/10/02)

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156726-99-7
Methyl onate

Chemical Properties

Boiling Point: 706.596°C at 760 mmHg
Flash Point:381.136°C
Density: 1.352g/cm³
Vapor Pressure: 0mmHg at 25°C
PSA: 221.43000
LogP: 1.23230

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