新的“ 2-苯基萘”介导的苯并[ b ]萘[2,3 - d ]呋喃-6,11-二酮和6-氧杂苯并[ a ]蒽-5,7,12-三酮的合成合成6-氧杂苯并[ a ]蒽-5-酮
摘要:
我们在这里描述基于2-(2-溴苯基)-3-羟基-1,4-萘醌杂环化的苯并[ b ]萘并[2,3 - d ]呋喃-6,11-二酮的新型合成方法。萘醌由3-(2-溴苯基)萘-2-醇制备,它们是通过2- [3-(2-溴苯基)-2-氧代丙基]苯甲醛的分子内醇醛缩合反应获得的。或者,通过将3-(2-溴苯基)萘-2-醇环化为苯并[ b ]萘[2] ,可以更直接,更有效地获得苯并[ b ]萘[2,3 - d ]呋喃-6,11-二酮。,3- d ]呋喃和所得化合物的氧化。此外,第一个6-氧杂苯并[ a]从2- [3-(2-甲酰基苯基)-2-氧丙基]苯甲酸类似地获得所述的蒽蒽-5-酮,并将其氧化成6-氧杂苯并[ a ]蒽-5,7,12-三酮。
Strategies towards potent trypanocidal drugs: Application of Rh-catalyzed [2 + 2 + 2] cycloadditions, sulfonyl phthalide annulation and nitroalkene reactions for the synthesis of substituted quinones and their evaluation against Trypanosoma cruzi
作者:James M. Wood、Nishikant S. Satam、Renata G. Almeida、Vinicius S. Cristani、Dênis P. de Lima、Luiza Dantas-Pereira、Kelly Salomão、Rubem F.S. Menna-Barreto、Irishi N.N. Namboothiri、John F. Bower、Eufrânio N. da Silva Júnior
DOI:10.1016/j.bmc.2020.115565
日期:2020.8
Rhodium-catalyzed [2 + 2 + 2] cycloadditions, sulfonyl phthalideannulations and nitroalkene reactions have been employed for the synthesis of 56 quinone-based compounds. These were evaluated against Trypanosoma cruzi, the parasite that causes Chagas disease. The reactions described here are part of a program that aims to utilize modern, versatile and efficient synthetic methods for the one or two
Carbazoloquinone alkaloids are of great interest as privileged structures for anticancer drug molecules. The purpose of this study was to investigate the structure-activity relationships of carbazoloquinone derivatives as anticancer agents. A series of carbazoloquinones including murrayaquinone A, koeniginequinones A and B, and related analogues were therefore prepared. Palladium-catalyzed intramolecular
Synthesis of Benzo[<i>b</i>]naphtho[2,3-<i>d</i>]furan-6,11-dione via One-pot Remote Anionic Fries Rearrangement and Metalation Reaction
作者:Claudio C. Lopes、Mariangela S. Azevedo、Glaucia B. Alves、Jari N. Cardoso、Rosangela S. Lopes
DOI:10.1055/s-2004-822357
日期:——
The use of a lithiation reaction to transform the bromo-arylcarbamate 8a into the corresponding benzo[b]naphtho[2,3-d]furan-6,11-dione (2) is described.
Efficient Synthesis of Dihydrofurans with Sulfide Groups by Ceric(IV) Ammonium Nitrate-Mediated Oxidative Cycloaddition of 1,3-Dicarbonyl Compounds to Vinyl Sulfides. Application to the Synthesis of Benzo[<i>b</i>]naphtho[2,3-<i>d</i>]furan-6,11-dione and First Total Synthesis of Millettocalyxins C and Pongamol Methyl Ether
作者:Yong Rok Lee、Keon Yong Kang、Gun Joon Lee、Won Kyong Lee
DOI:10.1055/s-2003-41023
日期:——
Ceric(IV) ammonium nitrate-mediated oxidative cycloaddition of 1,3-dicarbonyls to vinylsulfides afforded substituted dihydrofurans with sulfide groups in moderate yields. This new synthetic method has been applied to thesynthesis of benzo[b]naphtho[2,3-d]furan-6,11-dione and furanoflavone natural products such as millettocalyxins C and pongol methyl ether.
A Single-Step Palladium-Catalysed Synthesis of Naphtho[2,3-<i>b</i>]Benzofuran-6,11-Diones and 2-(Hydroxyphenyl)Naphthalene-1,4-Diones
作者:Binjie Gu、Xiaoli Yu、Zhaojun Xu、Feng Pan、Dawei Wang
DOI:10.3184/174751917x15045169836235
日期:2017.10
Palladium-catalysed competitive three-component C–H functionalisation reactions and cascade coupling ring-closing reactions of quinones with iodophenols in dihaloalkanes are described. During initial attempts to conduct C–H functionalisation reactions of quinones with iodophenols in dihaloalkanes, surprisingly a three-component C–H functionalisation reaction was discovered. Furthermore, as the reaction