Journal ArticleDOI
Synthesis of novel electron-deficient chromone-fused dienes via phosphine catalyzed [4+2] annulation
TLDR
Under mild acidic conditions, the tricyclic benzopyrones rearrange to provide highly substituted and electron-poor chromone-fused dienes in good yields.About:
This article is published in Tetrahedron Letters.The article was published on 2011-04-27. It has received 11 citations till now. The article focuses on the topics: Annulation & Chromone.read more
Citations
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Journal ArticleDOI
Chemistry of α-oxoesters: a powerful tool for the synthesis of heterocycles.
Journal ArticleDOI
Synthesis of heterocyclic compounds through nucleophilic phosphine catalysis
TL;DR: The present report summarizes the construction of four to eight-membered heterocyclic compounds containing nitrogen, oxygen and sulphur atoms through phosphine-catalyzed intramolecular annulations and intermolecular Annulations of electron-deficient alkenes, allenes, alkynes and Morita-Baylis-Hillman carbonates.
Journal ArticleDOI
Facile construction of novel heterocyclic compounds: three-component, one-pot synthesis of 2-hydroxybenzoyl-1,2-dihydropyridine-3-carboxylates, ketones, pyridone-3-carboxylates and benzopyrido-1,3-oxazole-4-carboxylates
TL;DR: In this paper, a facile method was developed for the preparation of novel heterocyclic compounds by the reaction of 3-formylchromones, benzylamines, and 2-aminophenols with 3-oxobutanoates.
Journal ArticleDOI
Application of E1cB Elimination in Asymmetric Organocatalytic Cascade Reactions To Construct Polyheterocyclic Compounds.
TL;DR: The formal asymmetric functionalization of the 3-position of 2-substituted chromane has been realized via a highly chemo-, regio-, and stereoselective organocatalytic cascade reaction in a sequential one-pot manner involving an E1cB mechanism governed ring-opening process.
Book ChapterDOI
Six-Membered Ring Systems: With O and/or S Atoms
TL;DR: In this paper, a review of reaction chemistry and new ring synthetic methods for pyranones is presented, covering work published in the calendar year 2011, including new ring synthesis methods for trioxanes, tetraoxane, trithianes and oxathianes.
References
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Book
The Flavonoids: Advances in Research since 1980
TL;DR: In this paper, the authors discuss the distribution and evolution of the Flavonoids in the Lower Plants and its evolution in the Dicotyledons of the world's plants.
Book
The Flavonoids Advances in Research Since 1986
TL;DR: The anthocyanins. 1H NMR spectroscopy of flavonoids and their glycosides as discussed by the authors, and the major and minor flavonoid glycoside.
Book
FLAVONOIDS: Chemistry, Biochemistry and Applications
TL;DR: A.M. Andersen and M.J. Marais Appendix - Checklist for Isoflavonoids O.C. Williams C-Glycosylflavonoids.
Journal ArticleDOI
Anthocyanins and other flavonoids
TL;DR: More than 450 new flavonoid structures, reported from January 2001 until December 2003, are reviewed and the biological activity of some of the compounds is discussed.
Book
The Science of Flavonoids
TL;DR: The Stereochemistry of Flavonoids and their Identification and Identification, isolation and identification, and the regulation of their biosynthesis are discussed in detail in this article, where the authors also discuss the role of signal molecules as targets of the action of the Flavonoid action.