An efficient and practical enantiospecific synthesis of methyl chromanone- and chroman-2-carboxylates
摘要:
Chromanone-2-carboxylates and chroman-2-carboxylates are useful building blocks for the synthesis of a variety of bioactive compounds, such as repinotan, fidarestat, and nebivolol. An efficient and practical enantiospecific synthesis of chromanone-2-carboxylates and chroman-2-carboxylates has been accomplished using intramolecular Mitsunobu etherification of methyl (S)-2-hydroxy-4-oxo-4-(2'-hydroxy)phenylbutanoates derived from L-malic acid. (C) 2015 Elsevier Ltd. All rights reserved.
An efficient and practical enantiospecific synthesis of methyl chromanone- and chroman-2-carboxylates
摘要:
Chromanone-2-carboxylates and chroman-2-carboxylates are useful building blocks for the synthesis of a variety of bioactive compounds, such as repinotan, fidarestat, and nebivolol. An efficient and practical enantiospecific synthesis of chromanone-2-carboxylates and chroman-2-carboxylates has been accomplished using intramolecular Mitsunobu etherification of methyl (S)-2-hydroxy-4-oxo-4-(2'-hydroxy)phenylbutanoates derived from L-malic acid. (C) 2015 Elsevier Ltd. All rights reserved.
Reaction of methyl 3-[(dimethylamino)methylidene]-6-fluoro-4-oxo −3,4-dihydrochroman-2-carboxylate with primary and secondary amines*
作者:A. I. Kysil、V. S. Moskvina、A. V. Turov、Z. V. Voitenko、V. P. Khilya
DOI:10.1007/s10593-011-0859-0
日期:2011.11
A method was developed for substitution of the dimethylamino group by bioisosteric fragments by the action of various primary and secondaryamines on methyl 3-[(dimethylamino)methylidene]-6-fluoro-4-oxo-3,4-dihydrochroman-2-carboxylate.
Efficient synthesis of methyl 4-chloro-6-fluoro-3-formyl-2H-chromene-2-carboxylate and its derivatives
作者:Andrii I. Kysil、Viktoria S. Moskvina、Marian V. Gorichko、Volodimyr P. Khilya
DOI:10.1007/s00706-011-0595-2
日期:2012.1
Methyl 4-chloro-6-fluoro-3-formyl-2H-chromene-2-carboxylate was synthesized conveniently using Vilsmeier reagent. A series of new 2H-chromenes was prepared in high yields by introducing a corresponding beta-halovinylaldehyde into condensation and cyclization reactions with active methylene compounds.
Design, Synthesis, and Bioassay Evaluation of Novel 4-Chromanone-Derived Compounds Incorporating Acylhydrazone Moiety