p. 1207 - 1211
(2006)(R)-6-Bromo-1-(2-tert-butoxycarbonylamino-1-methyl-ethyl)-1H-pyrrolo [2,3-b]pyridine-2-carboxylic Acid Ethyl Ester
(R)-6-bromo-4-methyl-3,4-dihydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester
6-chloro-pyrrolo[2,3-b]pyridine-1,2-dicarboxylic acid 1-tert-butyl ester 2-ethyl ester
7-oxy-pyrrolo[2,3-b]pyridine-1,2-dicarboxylic acid 1-tert-butyl ester 2-ethyl ester
1-(tert-butyl) 2-ethyl 1H-pyrrolo[2,3-b]pyridine-1,2-dicarboxylate