Utilisation d'ylides du phosphore en chimie des sucres : Part XIV. Synthèse de 3-C-benzylidène- et de 3-désoxy-3-C-dihalogénométhyl`ene-1,2:5,6-di-O-isopropylidène-α-D-ribo-et-xylo-furanoses
✍ Scribed by Jean M.J. Tronchet; Jean-Marc Bourgeois; Dominique Schwarzenbach
- Book ID
- 108308230
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 414 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0008-6215
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## Abstract The __cis__ and __trans__ isomers of 3‐deoxy‐1,2:5,6‐di‐O‐isopropylidene‐3‐C‐methylthiomethylene‐α‐D‐__xylo__‐ and ‐α‐D‐__ribo__‐hexofuranoses have been prepared by treatment of 1,2:5,6‐di‐O‐isopropylidene‐α‐D‐__xylo__‐ and ‐α‐D‐__ribo__‐hexofuran‐3‐uloses with methylthiomethylene‐triph
## Abstract The addition of cyanohydric acid to 1,2:5,6‐di‐O‐isopropylidene‐α‐D‐__ribo__‐hexofurannos‐3‐ulose can be sterically controlled. Under kinetic conditions, the __allo__ cyanohydrine epimer is formed, under thermodynamic conditions, the __gluco__ epimer is formed. The configuration of thes
**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