04656169 is referenced by 4 patents and cites 4 patents.

Novel biologically-active tetracyclic spiro-hydantoin derivatives which are potent inhibitors of aldose reductase and useful in treating diabetic complications are disclosed. Pharmaceutical compositions containing the novel compounds and a method of treating chronic diabetic complications are also disclosed. A preferred compound is 9'-chloro-5',6'-dihydro-2'-phenyl-spiro[imidazolidine-5,7'-7'H-pyrido(1,2, 3-de)quinoxaline]2,3',4-trione.

Title
Tetracyclic spiro-hydantoin aldose reductase inhibitors and compositions
Application Number
6/854588
Publication Number
4656169
Application Date
April 10, 1986
Publication Date
April 7, 1987
Inventor
Rodney C Schnur
Noank
CT, US
Agent
Mark Dryer
Peter C Richardson
Charles J Knuth
Assignee
Pfizer
NY, US
IPC
C07D 487/20
A61K 31/535
A61K 31/495
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