Sugar-chain asparagine derivatives and processes for the preparation thereof
申请人:Kajihara Yasuhiro
公开号:US20060166929A1
公开(公告)日:2006-07-27
An asparagine-linked oligosaccharide of the formula (1) given below having undeca- to tri-saccharides
wherein R
1
and R
2
are each a hydrogen atom or a group of the formulae (2) to (6) disclosed in the specification and may be the same or different, and Q is a biotin group or FITC group,
an asparagine-linked oligosaccharide derivative containing at least one fucose in N-acetylglucosamine on the nonreducing terminal side of an asparagine-linked oligosaccharide wherein the amino group of asparagine is modified with a biotin group or FITC group, a microplate having immobilized thereto a biotinated asparagine-linked oligosaccharide, and an affinity column having immobilized thereto a biotinated asparagine-linked oligosaccharide.
Process for producing sugar peptide having asparagine sugar chain and the sugar peptide
申请人:Kajihara Yasuhiro
公开号:US20050222382A1
公开(公告)日:2005-10-06
Glycopeptide having at least one asparagine-linked oligosaccharide at a desired position of the peptide chain obtained by: (1) esterifying hydroxyl of a resin and carboxyl of an amino acid having amino group nitrogen protected with a fat-soluble protective group (AGFPG), (2) removing the protective group to form a free amino group, (3) amidating the free amino group and carboxyl of an amino acid having AGFPG, (4) removing the protective group, (5) repeating the steps (3) and (4), (6) amidating the free amino group and carboxyl of the asparagine portion of an asparagine-linked oligosaccharide having AGFPG, (7) removing the protective group, (8) amidating the free amino group and carboxyl of an amino acid having AGFPG, (9) repeating steps (7) and (8), (10) removing the protective group, and (11) cutting off the resin with an acid; glycopeptide obtained by transferring sialic acid or a derivative thereof to the above glycopeptide.
Disialoundecasaccharide chain asparagine/fatty acid amide and medical drug containing the same
申请人:Kajihara Yasuhiro
公开号:US20070105813A1
公开(公告)日:2007-05-10
An asparagine-linked disialoundecaoligosaccharide-fatty acid amide, a drug containing the same, and a drug containing an asparagine-linked disialoundecaoligosaccharide.
Aminated complex-type sugar chain derivatives and process for the production thereof
申请人:Kajihara Yasuhiro
公开号:US20070060543A1
公开(公告)日:2007-03-15
An aminated complex-type oligosaccharide derivative, for example, of the formula (1)
wherein R
1
is H—(CO)—CH
2
X, —NH—(CO)—(CH
2
)
b
—CH
2
X, isothiocyanate group, —NH—(CO)
a
—(CH
2
)
b
—CO
2
H or —NH—(CO)
a
—(CH
2
)
b
—CHO, X being a halogen atom, a being 0 or 1, b being an integer of 1 to 4, R
2
and R
3
are a hydrogen atom or a group of the formulae (2) to (5) and may be the same or different, except for the case where both R
2
and R
3
are hydrogen or the formula (5), and the case where one of R
2
and R
3
is a hydrogen atom, with the formula (5) serving as the other thereof.
PROCESS FOR PREPARING GLYCOPEPTIDES HAVING ASPARAGINE-LINKED OLIGOSACCHARIDES, AND THE GLYCOPEPTIDES
申请人:Kajihara Yasuhiro
公开号:US20120035345A1
公开(公告)日:2012-02-09
Glycopeptide having at least one asparagine-linked oligosaccharide at a desired position of the peptide chain obtained by:
(1) esterifying hydroxyl of a resin and carboxyl of an amino acid having amino group nitrogen protected with a fat-soluble protective group (AGFPG),
(2) removing the protective group to form a free amino group,
(3) amidating the free amino group and carboxyl of an amino acid having AGFPG,
(4) removing the protective group,
(5) repeating the steps (3) and (4),
(6) amidating the free amino group and carboxyl of the asparagine portion of an asparagine-linked oligosaccharide having AGFPG,
(7) removing the protective group,
(8) amidating the free amino group and carboxyl of an amino acid having AGFPG,
(9) repeating steps (7) and (8),
(10) removing the protective group, and
(11) cutting off the resin with an acid;
glycopeptide obtained by transferring sialic acid or a derivative thereof to the above glycopeptide.