Synthesis of Analogues of the Antitumor (1→6)-Branched (1→3)-Glucohexaose
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摘要:
β-D-Glcp-(1→3)-[β-D-Glcp-(1→6)-lα-D-Manp-(1→3)-β-D-Glcp-(1→3)-[β-D-Glcp-(1→6)-]D-Glcp (18) and βD-Glcp-(1→3)-[β-D-Glcp-(1→6)-]α-D-Manp-(1→3)-β-D-Glcp-(1→3)-[β-D-Glcp-(1→6)-]β-D-Glcp-D-(1→3)-Glcp-l→OMe (29) were synthesized as the analogues of the immunomodulator β-D-Glcp-(1→3)-[β-D-Glcp(1→6)-]α-D-Glcp-(1→3)-βD-Glcp-(1→3)-[βD-Glcp-(1→6)-]D-Glcp through coupling of trisaccharide donors 9with trisaccharide acceptor 16 and tetrasaccharide acceptor 27 followed by deprotection,respectively.