(1-nosyl-5-nitroindol-3-yl)methyl ester: a novel protective group for carboxylic acids
Organic Letters (2008) - Comments
pubmed: 18484732  doi: 10.1021/ol8008655  issn: 1523-7060  issn: 1523-7052 

Takuya Nishimura, Kouhei Yamada, Tohru Takebe, Satoshi Yokoshima, Tohru Fukuyama