摘要:
The present invention relates to the identification of compounds and pharmaceutical compositions thereof for treating subjects with amyotrophic lateral sclerosis (ALS) and other neurodegenerative diseases. The invention also provides methods of preparing the provided compounds.
摘要:
The present invention relates to a novel process for the preparation of a compound of formula (I), wherein R 1 , R 2 , R 3 , R 4 and R 5 are each independently selected from hydrogen, halogen, C 1 -C 4 -alkyl, C 1 -C 4 -haloalkyl, C 1 -C 4 -alkoxy, C 1 -C 4 -haloalkoxy, nitro, cyano, and pentafluorothio; R 6 is C 1 -C 4 -alkyl, or C 1 -C 4 -haloalkyl; by oxidation of a compound of formula (II) with an oxidation agent selected from trifluoroperacetic acid and trichloroperacetic acid in the presence of a catalyst selected from hydroxides, oxides, sulfates, acetates or trifluoroacetates of lithium, magnesium, calcium, strontium, barium, titanium (IV), zinc (II) and manganese (II).