Methyl 6-deoxy-2,3-0-isopropylidene-a-D-manno-heptofuranoside (9) has been synthesised from the acetyliron complex 2 by a sequence of reactions involving deprotonation of 2, its reaction with aldehyde 5, decomplexation, isolation of 7, and reduction to 9. Compound 9 crystallises in the orthorbombic
Synthesis of methyl 5-O-acetyl-7-deoxy-2,3-O-isopropylidene-heptofuranosid-6-uloses
โ Scribed by Allan R. Moorman; Ronald T. Borchardt
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 223 KB
- Volume
- 119
- Category
- Article
- ISSN
- 0008-6215
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The structures of the title compounds (2b and 3) have been investigated in the solid state by X-ray methods. The crystals of 2b are monoclinic, space group P2,, and of 3 orthorhombit, space grtup P2,2,2,. The cell dimensions are: for 2b, a = 9.910(2), b = 11;745W, c = 11.810(3) A, /3 = 97.32(l)"; a
3-0-(6-0-Acetyl-2,3-anhydro-4-deoxy-a-L-ribo-hexopyranosyl)-l,2:5,6-di-O-isopropylidene-a-D-glucofuranose has been synthesised and its monocrystal investigated by X-ray diffraction methods. The compound crystallises in the orthorhombic system, space group P2,2,2t, with cell constants a = 8.790( 7),
As an alternative method for preparing sugar derivatives having a phosphorus atom as the ring heteroatom', attempts to introduce a carbon-phosphorus bond were made by using the addition reaction of phosphorus compounds to glycosiduloses. It is known that reaction of carbonyl compounds with dialkyl p