Structure Determination and Synthesis of Fluoro Nissl Green: An RNA-Binding Fluorochrome
作者:Craig A. Merlic、Soheil Motamed、Bruce Quinn
DOI:10.1021/jo00116a020
日期:1995.6
The isolation, structure determination, and total synthesis of Fluoro Nissl Green, a novel RNA-binding fluorochrome, are reported. Initially obtained: in only one part per 10(5), via a microwave-induced synthesis from m-phenylenediamine, the structure was determined by spectroscopic methods to be 3,8-diamino-10H-quindoline. The proposed structure was confirmed by a rational synthesis starting from m-phenylene diamine:and 2,4-dinitrobenzaldehyde. The key step employed a Friedlander reaction to construct the quindoline ring system from 1-acetyl-6-(acetylamino)-3-indolinone and 2-amino-4-(acetylamino)benzaldehyde. Histochemical studies with synthetic Fluoro Nissl Green demonstrate selective staining of neuronal perikarya and nucleoli.