# US 4,393,200 A · 18 .alpha.-Glycyrrhizinic acid and salt thereof

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- Number: US 4,393,200 A
- Document ID: US4393200A
- Status: Granted
- Kind: A
- Application number: 06/222,880
- Filed: 1981-01-06
- Granted: 1983-07-12
- Earliest claimed: 1980-01-09
- Assignees: Maruzen Kasei Co., Ltd.
- Inventors: Akira Miyashita; Kenzo Okada; Takashi Kuramoto
- Web page: https://patentgrep.com/patent/US4393200A

## CPC

- C07H 15/256: Polyterpene radicals
- C07H: SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS (derivatives of aldonic or saccharic acids C07C, C07D; aldonic acids, saccharic acids C07C59/105, C07C59/285; cyanohydrins C07C255/16; glycals C07D; compounds of unknown constitution C07G; polysaccharides, derivatives thereof C08B; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification C12N15/00; sugar industry C13)

## Abstract

This invention relates to 18 .alpha.-glycyrrhizinic acid having the structural formula, ##STR1## and salts thereof as well as a method for the production thereof.

## Claims

### Claim 1

18 .alpha.-glycyrrhizinic acid having the structural formula, ##STR6## and salts thereof.

### Claim 2 (depends on 1)

18 .alpha.-glycyrrhizinic acid salt according to claim 1 wherein the salt is ammonium, potassium or sodium salt.

### Claim 3

A glycyrrhizin composition comprising 30 to 98 mole % of 18 .alpha.-glycyrrhizinic acid or its salt and 70 to 2 mole % of 18 .beta.-glycyrrhizinic acid having the structural formula, ##STR7## or its salt, wherein the 2.0 wt % aqueous solution of said composition at 20.degree. C. and pH of 5.0 has a viscosity not higher than 3 centipoises.

### Claim 4 (depends on 3)

The glycyrrhizin composition according to claim 3 wherein 18 .alpha.-glycyrrhizinic acid salt and 18 .beta.-glycyrrhizinic acid salt respectively are ammonium, potassium or sodium salt.