141607-25-2

Upstream product

• 22860-22-6 2,3,4,6-tetra-O-acetyl-α-D-mannopyranose 
• 2524-64-3 chlorophosphoric acid diphenyl ester 
• 4163-65-9 per-O-acetyl-α-D-mannopyranose 
• 13242-53-0 acetobromomannose 
• 617-04-9 (2R,3S,4S,5S,6S)-2-(hydroxymethyl)-6-methoxytetrahydro-2H-pyran-3,4,5-triol 
• 83-87-4 D-Mannose pentaacetate 
• 3947-62-4 2,3,4,6-tetra-O-acetyl-D-mannopyranose 

Downstream Products

• 170375-09-4 erythro-N^α-((benzyloxy)carbonyl)-N^im-(triphenylmethyl)-β-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-L-histidine methyl ester 
• 1433192-30-3 (2R,3R,4S,5S,6R)-2-(acetoxymethyl)-6-(2-(2-(((benzyloxy)carbonyl)amino)ethoxy) ethoxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate 
• 170375-13-0 N^α-((tert-butyloxy)carbonyl)-1-<<4(S)-(((1(S)-(((2-(4'-(((3-(dimethylsulfonio)-1-propyl)amino)carbonyl)-2',4-bithiazol-2-yl)-1-ethyl)amino)carbonyl)-2(R)-hydroxy-1-propyl)amino)carbonyl)-3(S)-hydroxy-2(R)-pentyl>amino>-N^im-(triphenylmethyl)-erythr 
• 170375-14-1 1-<<4(S)-(((1(S)-(((2-(4'-(((3-(dimethylsulfonio)-1-propyl)amino)carbonyl)-2',4-bithiazol-2-yl)1-ethyl)amino)carbonyl)-2(R)-hydroxy-1-propyl)amino)carbonyl)-3(S)-hydroxy-2(R)-pentyl>amino>-N^im-(triphenylmethyl)erythro-β-(α-D-gulopyranosyl)-L-histidi 
• 170375-11-8 erythro-N^α-((tert-butyloxy)carbonyl)-N^im-(triphenylmethyl)-β-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-L-histidine methyl ester 
• 170375-10-7 erythro-N^im-(triphenylmethyl)-β-(2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl)-L-histidine methyl ester 
• 170375-12-9 erythro-N^α-((tert-butyloxy)carbonyl)-N^im-(triphenylmethyl)-β-(α-D-mannopyranosyl)-L-histidine 

Relevant academic research and scientific papers

A gulose moiety contributes to the belomycin (BLM) disaccharide selective targeting to lung cancer cells

Eight mono- or disaccharide analogues derived from BLM disaccharide, along with the corresponding carbohydate-dye conjugates have been designed and synthesized in this study, aiming at exploring the effect of a gulose residue on the cellular binding/uptake of BLM disaccharide and it possible uptake mechanism. Our evidence is presented indicating that, for the cellular binding/uptake of BLM disaccharide, a gulose residue is an essential subunit but unrelated to its chemical nature. Interestingly, D-gulose-dye conjugate is able to selectively target A549 cancer cells, but L-gulose-dye conjugate fails. Further uptake mechanism studies demonstrate D-gulose-dye derivatives similar to BLM disaccharide-dye ones behave in a temperature- and ATP-dependent manner, and are partly directed by the GLUT1 receptor. Moreover, D-gulose modifying gemcitabine 53a exhibits more potent antitumor activity compared to derivatives 53b-c in which gemcitabine is decorated with other monosaccharides. Taken together, the monosacharide D-gulose conjugate offers a new strategy for solving cytotoxic drugs via the increased tumor targeting in the therapy of lung cancer.

COMPOSITIONS AND METHODS OF MODULATING THE IMMUNE RESPONSE BY ACTIVATING ALPHA PROTEIN KINASE 1

The disclosure provides compositions and methods related to activating alpha-kinase 1 (ALPK1) for modulating an immune response and treating or preventing cancer, infection, inflammation and related diseases and disorders as well as potentiating an immune response to a target antigen. The disclosure also provides heterocyclic compounds of formula (I) as agonists of alpha protein kinase 1 (ALPK1) and their use in activating ALPK1, modulating an immune response and treating diseases such as cancer, wherein A1, A2, L1, L2, L3, Z1, Z2, W1, W2, R1, R2, R3, R4, R5, R6 and R7 are defined herein.

SUGAR-LINKER-DRUG CONJUGATES

The present disclosure relates to sugar-linker-drug conjugates, of the formula [A-B-]n-L-D, wherein A is a saccharide; B is a spacer, n is an integer selected from 1 to 3; L is a linker group and D is a drug having a chemically reactive functional group selected from the group consisting of a primary or secondary amine, hydroxyl, sulfhydryl, carboxyl, aldehyde and ketone. Pharmaceutical compositions comprising the conjugates and methods of using thern are also provided.

SACCHARIDE CONJUGATES

This invention relates to compounds comprising a saccharide conjugated to an imaging agent or a reporter group, compositions comprising them and methods of using them. Specifically BLM-disaccharide and BLM-monosaccharide conjugates containing different linker groups and an imaging agent or a reporter group are provided for the targeting and imaging of tumors.

Total synthesis of enantiopure β-D-mannosyl phosphomycoketides from Mycobacterium tuberculosis

The first stereoselective total synthesis of a β-d-mannosyl phosphomycoketide is reported. To introduce the stereogenic centers in the chain, three linear chiral building blocks were prepared using two different asymmetric catalytic conjugate addition protocols. Coupling of the various linear fragments was affected using a Julia-Kocienski sequence. This approach constitutes a general and convergent method for the construction of saturated oligoisoprenoid chains of any length and stereochemistry. In addition, an alternative approach for the formation of the difficult β-mannosyl phosphate linkage was shown to be successful. Biological evalutation of the all-S compound revealed that its antigenic potency for T cells is identical to that of the natural product. This result implies that the fine structure of the lipid part has a strong influence on biological activity and that the T cell response is discriminating between different stereoisomers. Copyright

Key synthetic analogs of bleomycin A2 that directly address the effect and role of the disaccharide: Demannosylbleomycin A2 and α-D-mannopyranosyldeglycobleomycin A2

Two key synthetic analogs of bleomycin A2 (1) are described. The synthesis and evaluation of demannosylbleomycin A2 3 lacking the terminal 2-O-3-O-carbamoyl-α-D-mannopyranoside including the putative carbamoyl sixth metal ligand and

Synthesis of glycosyl phosphates and azides

Anomerically enriched diphenyl hexopyranosyl phosphate triesters have been prepared from O-alkyl and -acylated hexopyranoses, using diphenyl chlorophosphate and 4-N,N-dimethylaminopyridine. Glycosyl phosphate triesters of D-gluco-, D-galacto-, D-manno, 2-acetamido-2-deoxy-D-gluco-, L-fuco-, and L-rhamno-pyranosyl derivatives have been obtained by this procedure. At temperatures 0° and above, and under thermodynamic control, diphenyl glycosyl phosphates cis to the pyranosyl C-2 substituent are formed predominantly, whereas at low temperatures and under kinetic control, glycosyl phosphate triesters having 2-trans stereochemistry are obtained. The β-glycosyl phosphate triesters of D-glucose and D-galactose derivatives are unstable and undergo anomerization to the α-glycosyl phosphate triesters, in contrast to the stable β-phosphate derivatives of L-rhamnose and D-mannose. These phosphate triesters have been deprotected to glycosyl phosphate triethylammonium salts, suitable for the preparation of other key biological derivatives, such as nucleotide sugars. In addition, the diphenyl phosphate groups at the anomeric center have been displaced by azide togive the glycosyl azides, key intermediates in the synthesis of glycosyl amino acids. Anomerically enriched diphenyl hexopyranosyl phosphate triesters have been prepared from O-alkyl and -acrylated hexopyranoses, using diphenyl chlorophosphate and 4-N,N-dimethylaminopyridine. Glycosyl phosphate triesters of D-gluco-, D-galacto-, D-manno, 2-acetamido-2-deoxy-D-gluco-, L-fuco-, and L-rhamno-pyranosyl derivatives have been obtained by this procedure. At temperatures 0° and above, and under thermodynamic control, diphenyl glycosyl phosphates cis to the pyranosyl C-2 substituent are formed predominantly, whereas at low temperatures and under kinetic control, glycosyl phosphate triesters having 1,2-trans stereochemistry are obtained. The β-glycosyl phosphate triesters of D-glucose and D-galactose derivatives are unstable and undergo anomerization to the α-glycosyl phosphate triesters, in contrast to the stable β-phosphate derivatives of L-rhamnose and D-mannose. These phosphate triesters have been deprotected to glycosyl phosphate triethylammonium salts, suitable for the preparation of other key biological derivatives, such as nucleotide sugars. In addition, the diphenyl phosphate groups at the anomeric center have been displaced by azide to give the glycosyl azides, key intermediates in the synthesis of glycosyl amino acids.