Chemoenzymatic synthesis of the sialyl-α-(2→3′)-lactosamine trisaccharide with a 3-aminopropyl group as a spacer at the reducing end
摘要:
The trisaccharide, 3-aminopropyl 5-acetamido-3,5-dideoxy-D-glycero-alpha-D-galacto -2-nonulopyranosylonic acid-(2 --> 3)-beta-D-galactopyranosyl-(1 --> 4)-2-acetamido-2-deoxy-beta-D-glucopyranoside has been synthesized chemoenzymatically for the first time. First, the acceptor, 3-aminopropyl beta-D-galactopyranosyl-(1 --> 4)-2-acetamido-2-deoxy-beta-D-glucopyranoside was synthesized in a conventional chemical manner, and then it was coupled with CMP-sialic acid using alpha-(2 --> 3)-(N)-sialyltransferase to afford the desired trisaccharide by an enzymatically stereocontrolled manner. (C) 2003 Elsevier Science Ltd. All rights reserved.
Chemoenzymatic synthesis of the sialyl-α-(2→3′)-lactosamine trisaccharide with a 3-aminopropyl group as a spacer at the reducing end
摘要:
The trisaccharide, 3-aminopropyl 5-acetamido-3,5-dideoxy-D-glycero-alpha-D-galacto -2-nonulopyranosylonic acid-(2 --> 3)-beta-D-galactopyranosyl-(1 --> 4)-2-acetamido-2-deoxy-beta-D-glucopyranoside has been synthesized chemoenzymatically for the first time. First, the acceptor, 3-aminopropyl beta-D-galactopyranosyl-(1 --> 4)-2-acetamido-2-deoxy-beta-D-glucopyranoside was synthesized in a conventional chemical manner, and then it was coupled with CMP-sialic acid using alpha-(2 --> 3)-(N)-sialyltransferase to afford the desired trisaccharide by an enzymatically stereocontrolled manner. (C) 2003 Elsevier Science Ltd. All rights reserved.