Gold(III)-Catalyzed 1,4-Nucleophilic Addition: Facile Approach to Prepare 2-Amino-1,4-naphthalenedione and 6-Amino-5,8-quinolinedione Derivatives
作者:Shaozhong Wang、Chunhui Jiang
DOI:10.1055/s-0028-1088116
日期:2009.4
An efficient approach is developed to prepare different 2-amino-1,4-naphthalenedione and 6-amino-5,8-quinolinedione derivatives regioselectively by Au(III)-catalyzed 1,4-nucleophilic addition and subsequent oxidation. A wide variety of primary, secondary, and aromatic amines, as well as allylamine and 2-butynylamine are well tolerated under the mild conditions to give products in moderate to good yields.
L-Histidine, N α -cbz-L-histidine, L-tryptophan and L-proline react with 1,4-naphthoquinone or 2,3-dichloro-1,4-naphthoquinone to afford modified N-quinonyl amino acids. With free α-amino acids, the quinone moiety is attached to the α-amino group. With blocked α-amino acids the quinone moiety is attached to the heterocyclic nitrogen atom.
Synthesis of a wakayin model compound: Oxidative formation of a new pyrrole ring in the indol-3-yl-indoloquinone system
作者:Liming Zhang、Michael P. Cava、Robin D. Rogers、Lillian M. Rogers
DOI:10.1016/s0040-4039(98)01718-3
日期:1998.10
The oxidative formation of a new pyrrolering in the indol-3-yl-indoloquinone system afforded a simple synthesis of the wakayin model compound 2b.
在吲哚-3-基-吲哚醌系统中新吡咯环的氧化形成提供了wakayin模型化合物2b的简单合成。
Synthesis of 1,6,7,8-tetrahydro-naphtho[2,3-d]-azepino[4,5-b]indole-9,14-diones and their inhibitory effects on pro-inflammatory cytokines
作者:Waya S. Phutdhawong、Wanwikar Ruensamran、Weerachai Phutdhawong、Thongchai Taechowisan
DOI:10.1016/j.bmcl.2009.07.154
日期:2009.10
A rapid route to a series of naphthoquinone-fused indole derivatives via irradiation in a modified commercial domestic microwave is reported. The desired products were produced in high yields and short reaction times. The naphthoquinone-fused indole derivatives were evaluated for their pro-inflammatory cytokines responses using lipopolysaccharide (LPS)-stimulated RAW264.7 murine macrophages. The results showed that most of the tested compounds inhibit the production of nitric oxide (NO), prostaglandin (PG)E-2, tumour necrosis factor (TNF)-alpha, interleukin (IL)-6 and IL-1 beta in RAW264.7 cells treated with LPS. (C) 2009 Elsevier Ltd. All rights reserved.