Glycopeptide antibiotics, combinatorial libraries of glycopeptide antibiotics and methods of producing same
申请人:——
公开号:US20040106772A1
公开(公告)日:2004-06-03
A glycopeptide of the formula A
1
-A
2
-A
3
-A
4
-A
5
-A
6
-A
7
, in which each dash represents a covalent bond; wherein A
1
comprises a modified or unmodified &agr;-amino acid residue, alkyl, aryl, aralkyl, alkanoyl, aroyl, aralkanoyl, heterocyclic, heterocyclic-carbonyl, heterocyclic-alkyl, heterocyclic-alkyl-carbonyl, alkylsulfonyl, arylsulfonyl, guanidinyl, carbamoyl, or xanthyl; wherein each of A
2
to A
7
comprises a modified or unmodified &agr;-amino acid residue, whereby (i) A
1
is linked to an amino group on A
2
, (ii) each of A
2
, A
4
and A
6
bears an aromatic side chain, which aromatic side chains are cross-linked together by two or more covalent bonds, and (iii) A
7
bears a terminal carboxyl, ester, amide, or N-substituted amide group;
and wherein one or more of A
1
to A
7
is linked via a glycosidic bond to one or more glycosidic groups each having one or more sugar residues, at least one of the sugar residues bearing one or more substituents of the formula YXR, N
+
(R
1
)=CR
2
R
3
, N=PR
1
R
2
R
3
, N
+
R
1
R
2
R
3
or P
+
R
1
R
2
R
3
in which Y is a single bond, O, NR, or S; X is O, NR
1
, S, SO
2
, C(O)O, C(O)S, C(S)O, C(S)S, C(NR
1
)O, C(O)NR
1
, or halo (in which case Y and R are absent).
A chemical library comprising a plurality of the glycopeptides of the invention.
A method for preparing a glycopeptide by glycosylation of an aglycone derived from a glycopeptide antibiotic.
A method for preparing a glycopeptide by preparing a pseudoaglycone from a glycopeptide antibiotic and glycosylating the pseudoaglycone.
一种公式为A1-A2-A3-A4-A5-A6-A7的糖肽,其中每个短划线表示共价键;其中A1包括修饰或未修饰的α-氨基酸残基,烷基,芳基,芳基烷基,烷酰基,芳酰基,芳基烷酰基,杂环,杂环羰基,杂环烷基,杂环烷基羰基,烷基磺酰基,芳基磺酰基,胍基,氨基甲酰基或黄嘌呤基;其中A2到A7中的每个都包括修饰或未修饰的α-氨基酸残基,其中(i)A1与A2上的氨基团连接,(ii)A2、A4和A6中的每个都具有芳香侧链,这些芳香侧链由两个或两个以上的共价键交联在一起,(iii)A7具有一个末端羧基,酯基,酰胺或N-取代酰胺基;其中A1到A7中的一个或多个通过糖苷键连接到一个或多个糖苷基团上,每个糖苷基团具有一个或多个糖残基,其中至少一个糖残基带有一个或多个配基的取代基,该配基的公式为YXR、N+(R1)=CR2R3、N=PR1R2R3、N+R1R2R3或P+R1R2R3,其中Y是单键,O,NR或S;X是O,NR1,S,SO2,C(O)O,C(O)S,C(S)O,C(S)S,C(NR1)O,C(O)NR1或卤素(此时Y和R不存在)。一种包含本发明中的多种糖肽的化学库。一种通过糖基化从糖肽抗生素衍生的无糖基化合物制备糖肽的方法。一种通过从糖肽抗生素制备伪无糖基化合物并糖基化伪无糖基化合物制备糖肽的方法。