摘要:
The invention relates to novel mimetics of the tetrasaccharides sialyl-Lewis-X and sialyl-Lewis-A having an improved action as inhibitors of cell adhesion, to a process for the preparation of these compounds and to their use as pharmacological active compounds and diagnostic agents.
摘要:
The invention relates to novel mimetics of the tetrasaccharides sialyl- Lewis-X (SLeX) and sialyl- Lewis-A (SLeA) having an improved action as inhibitors of cell adhesion, specifically a compound of the formula I in which R1 is —H, —CH3 or —CH2OH, R2 is —H or —OH, R3, R4 and R5 independently of one another are —H, C1-C4-alkyl or —OH, R6, R7, R8, R9 and R10 independently of one another are —H or C1-C4-alkyl D is —O—C(O)—, —C(O)—or —NR6—C(O)—, E is —CR7R8—, —NR7—, or a nitrogen heterocycle of the formula n is 1 or 2, m is 0 or 1, p is an integer from 0 to 10, q is 1 or 2 and X1 and X2 independently of one another are —H, —COOR9, —NR9R10, —OH, —OSO3H, —CH2COOR9 or —CH2OSO3H or together are ═O, to a process for preparing these compounds and to their use as pharmacological active compounds and diagnostic agents.
摘要:
The invention relates to novel conjugates of tetrasaccharides, preferably of sialyl-Lewis X (SLeX) and sialyl-Lewis A (SLeA), having improved activity as inhibitors of cell adhesion, a process for the preparation of these compounds, and their use as pharmacological active compounds and as diagnostics and pharmaceuticals which contain these conjugates.
摘要:
Polymer-based polyvalent malonic acid derivatives having anti-adhesive properties are described. The compounds comprise a polyamino acid linked to a group of formula (I). In formula (I), R.sup.1 and R.sup.2 together form a six-membered carbocylic or heterocyclic ring, containing at least one substituent selected from R.sup.4, R.sup.5, and R.sup.6. R.sup.3 is H, (CH.sub.2) .sub.m X or CH.sub.2 O(CH.sub.2).sup.m X.sup.1. The polyamino acid and the group of formula II are linked via R.sup.4, R.sup.5, or R.sup.6, or optionally via a spacer of formula --�Q.sup.1 --(CH.sub.2).sub.p --Q.sup.2 --!.sub.r. A and B independently are O, S, NH, HN--CO, OC--NH, O--CO, OC--O, NH--CO--O, --O--CO--NH, S--CO, SC--O, O--CS--S, S--CS--OS, NH--CS--S, S--CS--NH, or CH.sub.2. Z is a pyranose, furanose, open-chain polyalcohol or Y--X.sup.6. Y is --O--(CX.sup.2,X.sup.3).sub.n, -(CX.sup.2,X.sup.3).sub.n, --CH.sub.2 --(CX.sup.2,X.sup.3).sub.n or a saturated or unsaturated six-membered carbo- or heterocyclic group having at least one substituent R.sup.9, or a combination of the chain --O--(CX.sup.2,X.sup.3).sub.n, or -(CX.sup.2,X.sup.3).sub.n, and the carbocyclic or heterocyclic group, in which R.sup.4, R.sup.5, and R.sup.6 independently are H, OH, --O--(CH.sub.2) .sub.q X.sup.4, --CH.sub.2 O(CH.sub.2) .sub.q X.sup.5, or HNC(O)CH.sub.3, and X, X.sup.1, X.sup.2, and X.sup.3 independently are H, NH.sub.2, COOH, OH, CH.sub.2 OH, CH.sub.2 NH.sub.2, C.sub.1 -C.sub.20 -alkyl, or C.sub.6 -C.sub.10 -aryl, X.sup.4 and X.sup.5 independently are --NH-- or --O--, and X.sup.6 is OH or --C(R.sup.3) (COOH).sub.2. m, n, and q independently can be 1-20. In the linker, Q.sup.1 is CH.sub.2 or --CO--, Q.sup.2 is --NH-- or --CO--NH--, p is 1-6, and r is 0 or 1. Methods of preparing the compounds, and their use as medicaments or diagnostic agents also are disclosed. ##STR1##
摘要:
A process for the stereospecific synthesis of .beta.-glycosidically linked N-acetylglucosamine derivatives is provided, wherein a protected .alpha.-(N-acetyl-2-amino-2-deoxy)-.beta.-pyranosyl halide is coupled to a glycosyl acceptor using zinc chloride and a 4,4'-dialkoxytriphenylmethyl halide as catalysts.
摘要:
The invention relates to the compounds of formula (I) and physiologically acceptable salts thereof. The compounds are suitable, e.g., for treating hyperglycemia.
摘要:
Carbohydrate-containing polymers which can have an HLB* of from about 10 to about 20 are disclosed. The compounds comprise a hydrophilic polymer portion, a carbohydrate portion comprising from 1 to about 20 naturally occurring, identical or different, monosaccharide units, at least one bifunctional spacer coupling the carbohydrate portion to the hydrophilic polymer portion, and a potentiator moiety. The potentiator moiety can be is a crosslinking moiety located within the hydrophilic polymer or a hydrophobic, hydrophilic or ionic moiety. Processes for the preparation and use of such polymers are also disclosed.
摘要:
The invention relates to malonic acid derivatives, which inhibit the binding of selectin to carbohydrate ligands, and pharmaceutical compositions and diagnostic agents containing these derivatives, and methods for using these pharmaceutical compositions and diagnostic agents.
摘要:
The invention relates to the compounds of formula (I) and physiologically acceptable salts thereof. The compounds are suitable, e.g., for treating hyperglycemia.
摘要:
This application relates to a process for the production of (2R)-dihydroartemisinic acid or (2R)-dihydroartemisinic acid esters from artemisinic acid or artemisinic acid esters, respectively, by diimine hydrogenation of the exocyclic CC-double bond, and use of said process in the production of the antimalarial drug artemisinin.