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US 5,151,450 AGranted
Antiulcer substance
AssigneeTokyo Tanabe Company Limited
InventorsKiyokazu Murakami, Susumu Yokura
Life of this patent
Estimating the term…
Abstract
There are provided 4,5-Dihydroxy-2,6,6-trimethyl-2-cyclohepten-1-one, a method for preparing the same and an antiulcer agent containing the same as an effective ingredient.
Claims3
4,5-Dihydroxy-2,6,6-trimethyl-2-cyclohepten-1-one.
Antiulcer agent containing 4,5-dihydroxy-2,6,6-trimethyl-2-cyclohepten-1-one as effective ingredient.
A method for preparing 4,5-dihydroxy-2,6,6-trimethyl-2-cyclohepten-1-one which comprises:
- oxidizing 2,6,6-trimethylcyclohepta-2,4-dien-1-one by peracid or oxygen to prepare 4,5-epoxy-2,6,6-trimethylcyclohept-2-en-1-one, and then, applying to acid-catalysed hydrolysis to open epoxide.
Dependencies are inferred from the claim text.