A potent aldose reductase inhibitor, (2S,4S)-6-fluoro-2', 5'-dioxospiro[chroman-4,4'-imidazolidine]-2-carboxamide (Fidarestat): its absolute configuration and interactions with the aldose reductase by X-ray crystallography.
Oka, M., Matsumoto, Y., Sugiyama, S., Tsuruta, N., Matsushima, M.(2000) J Med Chem 43: 2479-2483
- PubMed: 10882376 
- DOI: 10.1021/jm990502r
- Primary Citation of Related Structures:  
1EF3 - PubMed Abstract: 
The absolute configuration of the aldose reductase (AR) inhibitor, (+)-(2S,4S)-6-fluoro-2',5'-dioxospiro¿chroman-4, 4'-imidazolidine-2-carboxamide (fidarestat), was established indirectly by single-crystal X-ray analysis of (+)-(2S, 4S)-8-bromo-6-fluoro-2',5'-dioxospiro¿chroman-4, 4'-imidazolidine-2-carboxylic acid (1) ...