Fig. 4

Mass-spectra analyses of compound (8) reduced with NaBH4 or NaBD4. a Mass-spectra analysis of compound (8) reduced with NaBH4. b Mass-spectra analysis of compound (8) reduced with NaBD4
Mass-spectra analyses of compound (8) reduced with NaBH4 or NaBD4. a Mass-spectra analysis of compound (8) reduced with NaBH4. b Mass-spectra analysis of compound (8) reduced with NaBD4