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US 5,843,911 AGranted
Hyaluronidase inhibitor containing god-type ellagitannin as active ingredient
AssigneeSuntory Limited
InventorsKoichi Nakahara, Katsuro Miyagawa, Tohru Kodama, Wataru Fujii
Life of this patent
Estimating the term…
Abstract
Hyaluronidase inhibitor containing GOD-type ellagitannin as an active ingredient, as well as pharmaceuticals and cosmetics containing the inhibitor. The activity of hyaluronidase which hydrolyses hyaluronic acid can be inhibited without causing any toxicity to human, notably in the absence of irritation or any other adverse effects on the skin.
Claims7
A hyaluronidase inhibitor comprising a GOD-type ellagitannin represented by the formula:
- ##STR5## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom or a galloyl group or, when taken together they represent a hexahydroxydiphenoyl group, and a pharmaceutically acceptable carrier.
Dependencies are inferred from the claim text.