26524-58-3

Upstream product

• 100-51-6 benzyl alcohol 
• 18403-22-0 (3aS,6S,7R,7aR)-6-Benzyloxy-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-ol 
• 7473-38-3 benzyl β-L-arabinopyranoside 
• 87-72-9 L-(+)-arabinose 
• 68753-33-3 (+)-benzyl-3,4-O-isopropyliden-2-O-(p-toluolsulfonyl)-β-L-arabinopyranoside 

Downstream Products

• 65359-87-7 benzyl 2,3-anhydro-β-L-ribopyranoside 
• 135468-86-9 Benzyl-3,4-<(tert-butoxycarbonyl)cyanmethylen>-3,4-didesoxy-α-D-arabinopyranosid 
• 135468-89-2 Benzyl 3,4-(C-cyano-carboxy)methano-3,4-dideoxy-α-D-arabinopyranoside 
• 104322-42-1 (-)-(2S)-benzyloxy-2,5-dihydrofuran-4-carboxaldehyde 
• 71204-43-8 benzyl 2,3-anhydro-α-D-lyxopyranoside 
• 128843-81-2 benzyl 3-deoxy-3-iodo-β-L-xylopyranoside 

Relevant academic research and scientific papers

Nucleoside analogues with a 1,3-diene-Fe(CO)3 substructure: Stereoselective synthesis, configurational assignment, and apoptosis-inducing activity

The synthesis and stereochemical assignment of two classes of iron-containing nucleoside analogues, both of which contain a butadiene-Fe(CO)3 substructure, is described. The first type of compounds are Fe(CO)3-complexed 3'-alkenyl-2′,3′-dideoxy- 2′,3′-dehydro nucleosides (2,5-dihydrofuran derivatives), from which the second class of compounds is derived by formal replacement of the ring oxygen atom by a CH2 group (carbocyclic nucleoside analogues). These compounds were prepared in a stereoselective manner through the metal-assisted introduction of the nucleobase. Whilst the furanoid intermediates were prepared from carbohydrates (such as methyl-glucopyranoside), the carbocyclic compounds were obtained by using an intramolecular Pauson-Khand reaction. Stereochemical assignments based on NMR and CD spectroscopy were confirmed by X-ray structural analysis. Biological investigations revealed that several of the complexes exhibited pronounced apoptosis-inducing properties (through an unusual caspase 3-independent but ROS-dependent pathway). Furthermore, some structure-activity relationships were identified, also as a precondition for the design and synthesis of fluorescent and biotin-labeled conjugates. I gotta Fe-ling: Iron-containing nucleoside analogues, which were first synthesized during an exercise in stereoselective π-complex chemistry, exhibited pronounced cytotoxic and apoptosis-inducing activities, even against resistant cancer cell lines. Both hetero- (X=O) and carbocyclic (X=CH2) compounds were studied, and a synthetic route to R′-labeled derivatives was developed as a precondition for future biological experiments. TDS=thexyldimethylsilyl. Copyright

Synthesis and inhibition properties of a series of pyranose derivatives towards a Zn-metalloproteinase from Saccharomonospora canescens

The Zn-proteinase, isolated from Saccharomonospora canescens (NPS), shares many common features with thermolysin, but considerable differences are also evident, as far as the substrate recognition site is concerned. In substrates of general structure AcylAlaAlaPhe 4NA, this neutral proteinase cleaves only the arylamide bond (non-typical activity of Zn-proteinases), while thermolysin attacks the peptide bond Ala-Phe. Phosphoramidon is a powerful tight binding inhibitor for thermolysin and significantly less specific towards NPS. The Ki-values (65 μM for NPS vs 0.034 μM for thermolysin) differ nearly 2000-folds. This implies significant differences in the specificity of the corresponding subsites. The carbohydrate moiety is supposed to accommodate in the S1-subsite and the series of arabinopyranosides and glucopyranosides (12 compounds), which are assayed as inhibitors in a model system: NPS with SucAlaAlaPhe4NA as a substrate could be considered as mapping the S1-subsite of NPS. Members of the series with an additional ring (3,4-epithio, 3,4-anhydro-derivatives) turned out to be reasonably good competitive inhibitors (Ki ≈ 0.1-0.2 mM are of the same order as the Ki value for phosphoramidon). The structure of these compounds (8, 9, 11 and 12) seems to fit the size of the S1-subsite and due to an appropriately oriented OH-group in addition, to protect the active site Zn2+.

Regio- and Stereoselective Ring Opening of Epoxy Pyranosides with Titanium Isopropoxide Reagents and SmI2: A Straightforward Access to Iododeoxy Sugars

A regioselective synthesis of 3-iodo-3-deoxy sugars is described by trans-diaxial cleavage of the oxirane ring of 2,3-anhydropyranosides with halogenated titanium isopropoxide reagents and samarium iodide.

Solid Phase Synthesis of Muramyl Dipeptide Derivatives and Investigations on their Biological Activities

New muramyl dipeptide derivatives with exchanged carbohydrate residues are described.Each derivative is synthesized via a solid phase synthesis using an aminomethyl anchor resin.All synthetic products can be isolated in good yields.Their biological activities are tested by the luminol-dependent chemiluminescence associated with the phagocytosis of opsonized zymosan by granulocytes. - Keywords: Muramyl Dipeptide, Solid Phase Synthesis, Chemiluminescence, Glycopeptide Derivatives

An Approach to Chiral η4-Butadiene-Fe(CO)3 Complexes via Diastereoselective Complexation of Nonracemic 2-Alkoxy-4-vinyl-2,5-dihydrofuran Derivatives

Complexation of (+)-L-arabinose-derived 2-benzyloxy-4-vinyl-2,5-dihydrofuran derivatives (8) with Fe2(CO)9 in ether proceeds diastereoselectively providing a (separable) mixture of the corresponding exo- and endo- η4-diene-Fe(CO)3 complexes 9 and 10 in a ratio of about 1 : 3.The relative (and absolute) configuration of the complexation products was determined by a combination of analytical methods (CD, NMR, X-ray).