A Synthesis of novelIH-Imidazo[1,2-α]Indole-3-Carboxylates
摘要:
A route to the uncommon imidazo[1,2-a]indole nucleus 1 is described via functionalisation and annelation of readily accessible 2-amino-indole-3-carboxylates 5. Intramolecular cyclization of a key 2-indolylformamidate 6 was utilised for the preparation of the 3,9-diester intermediates 7.
Preparation of a Novel pH-responsive Fluorescent Probe Based on an Imidazo[1,2-a]indole Fluorophore and its Application in Detecting Extremely Low pH in Saccharomyces cerevisiae