Synthesis of a Series of Diaminoindoles

J Org Chem. 2021 Sep 3;86(17):11333-11340. doi: 10.1021/acs.joc.1c00652. Epub 2021 Aug 5.

Abstract

A selection of 3,4-diaminoindoles were required for a recent drug discovery project. To this end, a 10-step synthesis was developed from 4-nitroindole. This synthesis was subsequently adapted and used to synthesize 3,5-; 3,6-; and 3,7-diaminoindoles from the corresponding 5-, 6-, or 7-nitroindole. These novel intermediates feature orthogonal protecting groups that allow them to be further diversified. This is the first reported synthesis of these types of compounds.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Indoles*

Substances

  • Indoles