22900-10-3

Upstream product

• 75-07-0 acetaldehyde 
• 56-82-6 Glyceraldehyde 
• 26677-08-7 (+/-)-3,6-dihydro-2H-pyran-2-one 
• 89736-30-1 2-deoxy-L-ribose dimethyl acetal 
• 40156-60-3 (2E)-5,5-dimethoxypent-2-enal 
• 40031-40-1 3,4-O-isopropylidene-L-arabinono-1,5-lactone 
• 817621-87-7 2-deoxy-4,5-O-isopropylidene-L-ribose ethylene acetal 
• 152202-52-3 L-arabinal 
• 1032153-57-3 1-t-butyl-2-deoxy-L-ribopyranose 
• 1373340-79-4 methyl 3,4-O-isopropylidene-2-O-phenoxythiocarbonyl-β-L-arabinopyranoside 
• 91-09-8 methyl β-L-arabinopyranoside 
• 6960-39-0 methyl 3,4-O-isopropylidene-β-L-arabinopyranoside 
• 64429-68-1 methyl 3,4-O-isopropylidene-2-deoxy-β-L-arabinopyranoside 
• 190186-36-8 (2R,3S)-5-(Phenyl-hydrazono)-pentane-1,2,3-triol 

Downstream Products

• 863396-35-4 methyl-2-deoxyribopyranoside 
• 51255-17-5 1-O-methyl-2-deoxy-D-ribofuranoside 
• 104091-28-3 (2R,4R,5S)-4-(6-p-Tolylamino-purin-9-yl)-tetrahydro-pyran-2,5-diol 
• 104091-18-1 (2S,4R,5S)-4-(6-p-Tolylamino-purin-9-yl)-tetrahydro-pyran-2,5-diol 
• 142453-38-1 β-2,3-dideoxy-3-(6-(3-methyl-2-buten-1-ylamino)purin-9-yl)-D-threo-pentopyranose 
• 142453-37-0 α-2,3-dideoxy-3-(6-(3-methyl-2-buten-1-ylamino)purin-9-yl)-D-threo-pentopyranose 
• 110509-24-5 2,3-Dideoxy-3-(3,4,5,6-tetrabromophthalimido)-β-D-threo-pentopyranose 
• 110472-45-2 2,3-Dideoxy-3-(3,4,5,6-tetrabromophthalimido)-α-D-threo-pentopyranose 
• 110472-56-5 2,3-Dideoxy-3-(3,4,5,6-tetrabromophthalimido)-5-O-(triphenylmethyl)-α-D-erythro-pentofuranose 
• 110472-57-6 2,3-Dideoxy-3-(3,4,5,6-tetrabromophthalimido)-5-O-(triphenylmethyl)-β-D-erythro-pentofuranose 
• 109153-48-2 N-[9-((2R,4R,5S)-2,5-Dihydroxy-tetrahydro-pyran-4-yl)-9H-purin-6-yl]-benzamide 
• 109153-47-1 N-[9-((2S,4R,5S)-2,5-Dihydroxy-tetrahydro-pyran-4-yl)-9H-purin-6-yl]-benzamide 
• 34371-14-7 2-deoxy-D-ribonolactone 
• 124290-99-9 (4S,5R)-5-((trityloxy)methyl)tetrahydrofuran-2,4-diol 

Relevant academic research and scientific papers

The 18O Isotope Shift in 13C Nuclear Magnetic Resonance Spectroscopy. 14. Kinetics of Oxygen Exchange at the Anomeric Carbon of D-Ribose and D-2-Deoxyribose

The kinetics of the oxygen-exchange reaction at the anomeric carbon atoms of D-ribose and D-2-deoxyribose (2-deoxy-D-erythro-pentose) were compared using the 18O isotope induced shift in 13C NMR spectroscopy.Measurements were made at a number of temperature and pH values.The oxygen-exchange reaction for these sugars is strongly pH-dependent, displaying regions of acid, water, and base catalysis.At 25 deg C the oxygen-exchange rate of D-ribose was found to be approximately 20-fold greater than the rate for D-glucose between pH 2 and 9.In turn, the oxygen-exchange rate for D-2-deoxyribose was greater than the rate for D-ribose by approximately 5-fold above pH 4 and by greater than 10-fold below pH 4.The results are analyzed in terms of steric and inductive effects on the hydration kinetics of the open-chain forms and by comparison with the hydration reaction of simple aldehydes.The study also includes quantitative data, based upon 13C NMR line intensities, for the various anomeric forms that exist in solutions of these sugars at the different temperature and pH values used in the kinetic measurements reported here.In each case, the oxygen-exchange reactions of the anomers are slow relative to the rate of anomerization, so that the anomers appear to exchange oxygen at the same rate.

2-deoxy-L-ribose preparation method

The invention relates to a method for preparing 2-deoxidation-L-ribose based on L-arabinose as a raw material. The method comprises following seven steps: protection, group activation, transformation, deprotection and purification. Synthesis reaction cond

Improved and practical synthesis of 2-deoxy-l-ribose by hypophosphite-mediated deoxygenation

An improved and practical route for a large-scale synthesis of 2-deoxy-L-ribose starting from L-arabinose has been developed. This is the first reported synthesis of 2-deoxy-L-ribose in which deoxygenation has been mediated by hypophosphite reagents instead of by organotin reagents.

Stability of N-glycosidic bond of (5′ S)-8,5′-Cyclo-2′- deoxyguanosine

8,5′-Cyclopurine deoxynucleosides are unique tandem lesions containing an additional covalent bond between the base and the sugar. These mutagenic and genotoxic lesions are repaired only by nucleotide excision repair. The N-glycosidic (or C1′-N9) bond of 2′-deoxyguanosine (dG) derivatives is usually susceptible to acid hydrolysis, but even after cleavage of this bond of the cyclopurine lesions, the base would remain attached to the sugar. Here, the stability of the N-glycosidic bond and the products formed by formic acid hydrolysis of (5′S)-8,5′-cyclo-2′-deoxyguanosine (S-cdG) were investigated. For comparison, the stability of the N-glycosidic bond of 8,5′-cyclo-2′,5′-dideoxyguanosine (ddcdG), 8-methyl-2′-deoxyguanosine (8-Me-dG), 7,8-dihydro-8-oxo-2′- deoxyguanosine (8-Oxo-dG), and dG was also studied. In various acid conditions, S-cdG and ddcdG exhibited similar stability to hydrolysis. Likewise, 8-Me-dG and dG showed comparable stability, but the half-lives of the cyclic dG lesions were at least 5-fold higher than those of dG or 8-Me-dG. NMR studies were carried out to investigate the products formed after the cleavage of the C1′-N9 bond. 2-Deoxyribose generated α and β anomers of deoxyribopyranose and deoxyribopyranose oligomers following acid treatment. S-cdG gave α- and β-deoxyribopyranose linked guanine as the major products, but α and β anomers of deoxyribofuranose linked guanine and other products were also detected. The N-glycosidic bond of 8-Oxo-dG was found exceptionally stable in acid. Computational studies determined that both the protonation of the N7 atom and the rate constant in the bond breaking step control the overall kinetics of hydrolysis, but both varied for the molecules studied indicating a delicate balance between the two steps. Nevertheless, the computational approach successfully predicted the trend observed experimentally. For 8-Oxo-dG, the low pKa of O8 and N3 prevented appreciable protonation, making the free energy for N-glycosidic bond cleavage in the subsequent step very high.

A new synthetic strategy for 2-deoxy-D-ribose via palladium(II)-catalyzed cyclization of aldehyde

We achieved a total synthesis of 2-deoxy-D-ribose through intramolecular Pd(II)-catalyzed cyclization of aldehyde via an unstable hemiacetal intermediate as a key step. The Japan Institute of Heterocyclic Chemistry.

PREPARATION METHOD OF 2-DEOXY-L-RIBOSE

A method of preparing 2-deoxy-L-ribose represented by the following formula I is disclosed. The preparation method includes the steps of: treating L-arabinose with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-L-arabinopyranose; allowi

THE PREPARATION METHOD OF 2-DE0XY-L-RIB0SE

A method of preparing 2-deoxy-L-ribose represented by the following formula I is disclosed. The preparation method includes the steps of : treating L-arabinose with an alcohol solvent in the presence of an acid to prepare 1-alkoxy-L- arabinopyranose; allowing the prepared 1-alkoxy-L- arabinopyranose to react with acyl chloride so as to prepare l-alkoxy-2, 3, 4-triacyl-L-arabinopyranose; brominating the alkoxy group of the prepared l-alkoxy-2, 3, 4-triacyl-L- arabinopyranose to prepare a l-bromo-2, 3, 4-triacyl compound; allowing the prepared compound to react with zinc in the presence of ethyl acetate and an organic base so as to prepare glycal; treating the glycal with an alcohol solvent in the presence of an acid to prepare l-alkoxy-2-deoxy-3, 4- diacyl-L-ribopyranose; treating the prepared l-alkoxy-2- deoxy-3, 4-diacyl-L-ribopyranose with a base to prepare 1- alkoxy-2-deoxy-L-ribopyranose; and hydrolyzing the prepared l-alkoxy-2-deoxy-L-ribopyranose in the presence of an acid catalyst.

A simple and efficient synthesis of 2-deoxy-L-ribose from 2-deoxy-D-ribose

An efficient synthesis of 2-deoxy-L-ribose was achieved without chromatography starting from its enantiomer 2-deoxy-D-ribose in more than 30% overall yield. An unexpected product, 2-deoxy-xylose, was obtained under slightly different reaction conditions a

Production method of 2-deoxy-L-ribose compound

An aldehyde compound represented by the formula (1) is reacted with an organometallic compound represented by the formula (2) to give an alcohol compound represented by the formula (3), which is then subjected to deprotection of a hydroxyl group and production of aldehyde by acid hydrolysis. wherein R1 and R2 are each independently a hydroxyl-protecting group or R1 and R2 in combination show a hydroxyl-protecting group, R3 and R4 are each independently an alkyl group, an aralkyl group, an aryl group or a silyl group or R3 and R4 in combination show a cyclic alkyl group.

Synthesis of beta-L-2'-deoxy nucleosides

An improved process for the preparation of 2′-modified nucleosides and 2′-deoxy-nucleosides, such as, β-L-2′-deoxy-thymidine (LdT), is provided. In particular, the improved process is directed to the synthesis of a 2′-deoxynucleoside that may utilize different starting materials but that proceeds via a chloro-sugar intermediate or via a 2,2′-anhydro-1-furanosyl-nucleobase intermediate. Where an 2,2′-anhydro-1-furanosyl base intermediate is utilized, a reducing agent, such as Red-Al, and a sequestering agent, such as 15-crown-5 ether, that cause an intramolecular displacement reaction and formation of the desired nucleoside product in good yields are employed. An alternative process of the present invention utilizes a 2,2′-anhydro-1-furanosyl base intermediate without a sequestering agent to afford 2′-deoxynucleosides in good yields. The compounds made according to the present invention may be used as intermediates in the preparation of other nucleoside analogues, or may be used directly as antiviral and/or antineoplastic agents.