𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Methylation of Dihydroquercetin Acetates: Synthesis of 5-O-Methyldihydroquercetin

✍ Scribed by Kiehlmann, Eberhard; Slade, Peter W.

Book ID
111657575
Publisher
American Chemical Society
Year
2003
Tongue
English
Weight
189 KB
Volume
66
Category
Article
ISSN
0163-3864

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

Epimerization, transacylation and bromin
Epimerization, transacylation and bromination of dihydroquercetin acetates; synthesis of 8-bromodihydroquercetin
✍ Eberhard Kiehlmann; Monica G. Szczepina πŸ“‚ Article πŸ“… 2011 πŸ› SP Versita 🌐 English βš– 464 KB

## Abstract Dihydroquercetin (dhq) and its 3-acetate react with acetic anhydride in the absence of a base catalyst to yield mixtures of partially acetylated products. Three new esters were characterized by NMR spectroscopy as dhq 3,7,3β€²-triacetate, 3,7,4β€²-triacetate and 5,7,3β€²,4β€²-tetraacetate. At i

Synthesis of 5-O-methyl-d-galactofuranos
Synthesis of 5-O-methyl-d-galactofuranose
✍ Marcos L. Sznaidman; Alicia FernΓ‘ndez Cirelli; Rosa M. de Lederkremer πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science 🌐 English βš– 555 KB

ABSTRACr 5-0-Methyl-D-galactofuranose (7) was synthesized, for the first time, in five steps from D-galactono-1,4-lactone (1) in good overall yield. Tritylation and further acetylation of 1 gave 2,3,5-tri-O-acetyl-6-O-trityl-D-galactono-l,Clactone (2); prolonged acetylation caused elimination to for

Synthesis of 5-substituted 4-O-methyl te
Synthesis of 5-substituted 4-O-methyl tetramates
✍ Raymond C.F Jones; Andrew D Bates πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science 🌐 French βš– 251 KB

4-Methoxy-A3 -pyrrolin-2-ones (4-O-methyl tetramates) are \_ alkylated at C-5 via a lithio-derivative; an N-substituent may be introduced either during or after heterocycle formation.