Triethylbenzylammonium Chloride as a Useful and Efficient Catalyst for the Alkylation of Indole/substituted Indoles in Water: A Comparative Study between Conventional and Microwave Irradiation
green and facile method for the alkylation of indole/substituted indole in water using a phase Transfer catalyst (Triethylbenzylammonium Chloride, TEBA) to synthesise bis‐indolyl methanes (BIMs) and Michael addition of indole to α,β‐unsaturated carbonyl compounds is reported. The substitution of indoles occurred exclusively at the 3‐position and products of N‐alkylation has not been observed. However
Synthesis of Pharmacologically Active Bis(indolyl) and Tris(indolyl) Derivatives Using Chlorotrimethylsilane
作者:Nongthombam G. Singh、Chingrishon Kathing、Jims W. S. Rani、Rishan L. Nongkhlaw
DOI:10.1002/jccs.201300467
日期:2014.4
comparatively fast and efficient catalyst for carrying out electrophilic substitution reactions of indoles with various aldehydes/ketones/triethylorthoformate, yielding excellent amount of bis(indolyl)methanes/tris(indolyl)methanes. The merits of this protocol are avoidance of any external energy source, minimal reaction time, simple and easy procedure and high yield under solvent free room temperature condition
Analogs of Indole-3-Carbinol Metabolites as Chemotherapeutic and Chemopreventive Agents
申请人:JONG Ling
公开号:US20090023796A1
公开(公告)日:2009-01-22
Novel compounds useful as chemotherapeutic and chemopreventive agents are provided. The compounds are analogs of indole-3-carbinol metabolites wherein the structures and substituents of the compounds are selected to enhance the compounds' overall efficacy, particularly with respect to therapeutic activity, oral bioavailability, long-term safety, patient tolerability, and therapeutic window. The compounds are useful not only in treatment of cancer but also in prevention of cancer. One preferred class of the novel compounds has the structure of formula (IV)
wherein:
R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, R
5A
, R
6A
, R
7A
, R
8A
, R
22
and R
23
are defined herein. Pharmaceutical compositions are provided as well, as are methods of synthesis and use.