The ring-opening reactions of methyl 3,4-anhydro-2,6-dideoxy-a-and -/3-L-IJIXOand -ribo-hexopyranosides with sodium azide, ammonia, methyl-and dimethylamine, and sodium methoxide were studied. Regioselectivity is explained in terms of steric and conformational factors. SOMMAIRE L'ouverture du cycle
✦ LIBER ✦
Réactivité du méthyl 3,6-didésoxy-α-D-arabino-hexopyranoside en présence de chlorure de zinc et de benzaldehyde. Obtention du méthyl 2-O-benzoyl-5-O-benzyl-3,6-didésoxy-α-D-hexofuranoside
✍ Scribed by Jean-Claude Florent; Claude Monneret; Qui Khuong-Huu
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- French
- Weight
- 127 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0040-4039
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**Electron Impact Mass Spectrometry of the 3‐Desoxy‐1,2: 5,6‐di‐__O__‐isopropylidene‐3‐methylidene‐δ‐D‐hexofuranose and Some C(3′)‐Substituted Analogues** The mass spectra of the 3‐desoxy‐1,2:5, 6‐di‐__O__‐isopropylidene‐3‐methylidene‐ α‐D‐__ribo__‐hexofuranose and of some C(3′)‐mono‐ and ‐disubsti