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The photochemistry of carbohydrate derivatives. Part 6. Synthesis of 3-(methoxycarbonyl) propyl pyranosides of 2,3-di-O-(?-D-galactopyranosyl)-?-D-galactose and 3-O-(?-D-galactopyranosyl)-2-O-(?-D-galactopyranosyl)-?-D-galactose using photolabile O-(2-nitrobenzylidene) acetals as temporary blocking groups

✍ Scribed by Collins, Peter M.; Eder, Hansj�rg


Book ID
119998776
Publisher
Royal Society of Chemistry
Year
1983
Weight
788 KB
Volume
0
Category
Article
ISSN
1472-7781

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Synthesis of methyl 3-O-(α- and β-d-gala
✍ Frederick C. Baines; Peter M. Collins; Farnoosh Farnia 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 683 KB

The title branched-trisaccharide derivatives (9 and 13) have been synthesised from methyl 2,3-O-(2-nitrobenzylidene)-a-L-rhamnopyranoside (2) using the 2nitrobenzylidene residue as a temporary blocking-group. Condensation of 2 with methyl (2,3,4-tri-O-acetyl-a-D-glucopyranosyl bromide)uronate afford