A Green Solventless Protocol for the Synthesis ofβ-Enaminones andβ-Enamino Esters Using Silica Sulfuric Acid as a Highly Efficient, Heterogeneous and Reusable Catalyst
A highly regiospecific synthesis of a series of indenoindoles is reported, together with X-ray studies and their activity against human prostate cancer cells PC-3 and LNCaP in vitro. The most effective compound 7,7-dimethyl-5-[(3,4-dichlorophenyl)]-(4bRS,9bRS)-dihydroxy-4b,5,6,7,8,9bhexahydro-indeno[1,2-b]indole-9,10-dione 7q reduced the viability in both cell lines in a time and dose-dependent manner
Three-Component Condensation of Cyclic Enamino Ketones with Phenylglyoxal Hydrate and Ethyl Acetoacetate
作者:A. N. Andin、A. A. Krasnogorova
DOI:10.1134/s1070428019090057
日期:2019.9
Three-component condensation of cyclic enamino ketones with phenylglyoxal hydrate and ethylacetoacetate in aqueous ethanol afforded a series of polyfunctionalized 3,3a,4,5,6,7,8,8a-octahydro-2H-furo-[2,3-b]indole derivatives.
环状烯氨基酮与苯乙二醛水合物和乙酰乙酸乙酯在乙醇水溶液中的三组分缩合得到一系列多官能化的3,3a,4,5,6,7,8,8,8a-八氢-2 H-呋喃基-[2,3- b ]吲哚衍生物。
Enantioselective Construction of Cyclic Enaminone-Based 3-Substituted 3-Amino-2-oxindole Scaffolds<i>via</i>Catalytic Asymmetric Additions of Isatin-Derived Imines
作者:Lu-Jia Zhou、Yu-Chen Zhang、Fei Jiang、Guofeng He、Jingjing Yan、Han Lu、Shu Zhang、Feng Shi
DOI:10.1002/adsc.201600508
日期:2016.10.6
bioactivity has been developed via chiral phosphoric acid‐catalyzed enantioselective addition reactions of cyclic enaminones to isatin‐derived imines, which afforded a series of cyclic enaminone‐based 3‐substituted 3‐amino‐2‐oxindoles in high yields and excellent enantioselectivities (up to 99% yield, 97% ee). The investigation of the reaction mechanism suggested that it was facilitated by a dual hydrogen‐bonding
Three-Component Domino Reactions for Selective Formation of Indeno[1,2-<i>b</i>]indole Derivatives
作者:Bo Jiang、Qiu-Yun Li、Shu-Jiang Tu、Guigen Li
DOI:10.1021/ol3023038
日期:2012.10.19
Efficient three-componentdomino strategies for the synthesis of multifunctionalized tetracyclic indeno[1,2-b]indole derivatives with different substituted patterns have been established successfully. The first pathway involves a novel sequential methyl migration, aromatization, and esterification, while a second reaction in HOAc leads to compounds 6 with high syn diastereoselectivity. Both reactions showed
成功建立了高效的三组分多米诺骨牌策略,用于合成具有不同取代模式的多官能化四环茚并[1,2- b ]吲哚衍生物。第一途径涉及一种新颖的顺序甲基迁移,芳构化,和酯化,而在HOAc导致化合物的第二反应6具有高顺式非对映选择性。两种反应均具有诱人的功能,包括温和的条件,方便的一锅操作,15–32分钟的短反应时间以及出色的区域和/或立体选择性。
Brønsted acid-catalyzed regioselective reactions of 2-indolylmethanols with cyclic enaminone and anhydride leading to C3-functionalized indole derivatives
作者:Can Li、Hong-Hao Zhang、Tao Fan、Yang Shen、Qiong Wu、Feng Shi
DOI:10.1039/c6ob01282e
日期:——
substitution of 2-indolylmethanols with nucleophiles such as cyclic enaminone and cyclic anhydride has been established in the presence of Brønsted acid, which efficiently afforded C3-functionalized indole derivatives with structural diversity in high yield and regiospecificity (40 examples, up to 99% yield). Using this approach, the reactivity of the C3-position of the indole was switched from nucleophilic to