Abstract
Isoflavonoids constitute an important class of natural products, comprising great structural diversity. Known as phytoalexins and phytoestrogens, these compounds exhibit interesting biological activities. The corresponding carba-analogues, in which the oxygen atom at the B-ring is replaced by a methylene, are emerging as an attractive alternative for the preparation of new bioactive compounds. In this review, we report our results on the synthesis of isoflavonoid analogues (5-carba-pterocarpans, 1-carba-isoflavanones, 5-carba-11-aza-pterocarpan and pterocarpanquinones) with anti-cancer, antiparasitic and anti-viral properties. Palladium-catalyzed oxyarylation and azaarylation of dihydronaphthalenes and α-arylation of α- tetralones were the key steps in the developed synthetic approaches. A historical background, as well as a brief mechanistic discussion of these reactions, will be presented.
Keywords: Isoflavonoids, Carba-isoflavonoids, Oxyarylation, Azaarylation, α-Arylation, Palladium-catalyzed.
Current Organic Synthesis
Title:Palladium-Catalyzed Oxyarylation, Azaarylation and α-Arylation Reactions in the Synthesis of Bioactive Isoflavonoid Analogues
Volume: 12 Issue: 6
Author(s): Camilla D. Buarque, Jorge L. O. Domingos, Chaquip D. Netto and Paulo R. R. Costa
Affiliation:
Keywords: Isoflavonoids, Carba-isoflavonoids, Oxyarylation, Azaarylation, α-Arylation, Palladium-catalyzed.
Abstract: Isoflavonoids constitute an important class of natural products, comprising great structural diversity. Known as phytoalexins and phytoestrogens, these compounds exhibit interesting biological activities. The corresponding carba-analogues, in which the oxygen atom at the B-ring is replaced by a methylene, are emerging as an attractive alternative for the preparation of new bioactive compounds. In this review, we report our results on the synthesis of isoflavonoid analogues (5-carba-pterocarpans, 1-carba-isoflavanones, 5-carba-11-aza-pterocarpan and pterocarpanquinones) with anti-cancer, antiparasitic and anti-viral properties. Palladium-catalyzed oxyarylation and azaarylation of dihydronaphthalenes and α-arylation of α- tetralones were the key steps in the developed synthetic approaches. A historical background, as well as a brief mechanistic discussion of these reactions, will be presented.
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Cite this article as:
Buarque D. Camilla, Domingos L. O. Jorge, Netto D. Chaquip and Costa R. R. Paulo, Palladium-Catalyzed Oxyarylation, Azaarylation and α-Arylation Reactions in the Synthesis of Bioactive Isoflavonoid Analogues, Current Organic Synthesis 2015; 12 (6) . https://dx.doi.org/10.2174/157017941206150828112502
DOI https://dx.doi.org/10.2174/157017941206150828112502 |
Print ISSN 1570-1794 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6271 |
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