## Abstract __S__‐Methylation of 6‐__S__‐benzyl‐6‐deoxy‐1,2‐__O__‐isopropylidene‐3‐__O__‐methyl‐α‐D‐__xylo__‐6‐thiohexofuranos‐5‐ulose (**1**) gave the expected sulfonium salt **2** which on alcaline treatment yielded the stable sulfur ylide **3**. This compound constitutes an useful synthetic inte
Esters phosphoriques, phosphonates et oxydes de phosphine dérivés de sucres. Communication préliminaire
✍ Scribed by Jean M. J. Tronchet; Jean-Richard Neeser; Etienne J. Charollais
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- German
- Weight
- 165 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Some sugar phosphates, phosphonates and phosphine oxides, Preliminary communication
Some new phosphates of 1, 2‐O‐isopropylidene‐α‐D‐ribofuranose have been prepared. Reactions of 3‐C‐cyanomethylidene‐3‐deoxy‐1, 2‐O‐isopropylidene‐5‐O‐trityl‐α‐D‐erythro‐pentofuranose (9) have been studied. On treatment with phosphorus nucleophiles, 9 led to phosphorus bearing branched‐chain sugar derivatives. Branched‐chain cyanosugars as 15 and 16 prepared by cis‐vic‐dihydroxylation of 9 constitute interesting potential precursors of new types of cyclic sugar phosphates.
📜 SIMILAR VOLUMES
**Deconjugation of sugars enones. Preliminary Communication** Branched‐chain sugar enones **1** and **2** (**R** = Ac) deconjugated toposelectively (only the __E__ isomers reacting) to **3**. The same phenomenon was noted in the case of __Z__‐**4** which gave __E__‐**5**. The kinetic parameters of
**Deoxy‐hydroxylamino‐sugar Derivatives and Corresponding Diglycosylnitroxides Radicals** A number of sugar aldonitrones, including __C,N__‐diglycosylnitrones, and ketonitrones have been treated with __Grignard__ reagents or cyanide anion leading to the corresponding deoxy‐hydroxylamino‐sugars. On
## Abstract Treated with 2,3‐dimethyl‐2,3‐bis‐(hydroxylamino)‐butane, aldehydo‐dialdofuranoses (**1**) gave a mixture of two compounds: a 1,3‐dihydroxyimidazolidine (**2**) and a 1‐hydroxyimidazoline (**3**). Oxidation (PbO~2~) of compounds **3** gave stable free radicals having the structure of 2‐
## Abstract The syntheses of three types of sugar nitrones (aldonitrone, ketonitrone and α‐β unsaturated aldonitrone) are described. On 1,3‐dipolar cycloaddition with phenylacetylene, the aldonitrone gave two Δ~4~‐isoxazolines epimeric at the new asymetric carbon, while the same reaction on the ket
**Free sugar radicals. V. Deoxyhydroxylaminosugar derivatives and related compounds** We describe several synthetic routes to deoxyhydroxylaminosugar derivatives of the type Glyc‐N(OH)‐R where Glyc stands for a sugar moiety linked by any of its C‐atoms except the anomeric one and R for one of the f