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US 4,304,722 AGranted
Benzo[1,2-b:5,4-b']difuran-3(2H)-ones
AssigneeThe Upjohn Company
InventorRonald B. Gammill
Life of this patent
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Abstract
The present invention provides novel benzo[1,2-b:5,4-b']difuran-3(2H)-ones, which are useful as antiatherosclerotic agents.
Claims5
A furochromone of formula VI
- wherein R.sub.17 is hydrogen or alkyl of one to 8 carbon atoms, inclusive;
- and
- wherein one of R.sub.3 and R.sub.4 is methoxy and the other is methoxy or
Dependencies are inferred from the claim text.