Patent US4226804A successfully refreshed from Google Patents.
US4226804A
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Alpha amino acid dihydrochalcones
Assignee: Dynapol Shareholders Liquidating Trust
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Filing: 1979-03-09
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Granted: 1980-10-07
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Expires: 1999-03-09
Abstract
Abstract Dihydrochalcones of the formula <IMAGE> are disclosed wherein X is H or OH and R is lower alkyl. These materials are useful as sweeteners for edibles. A process for preparing these compounds using a novel intermediate is disclosed as are acid and base neutralization products of the subject dihydrochalcones.
Inventors
- 👤 Grant E. Dubois
- 👤 Rebecca A. G. Stephenson
- 👤 Guy A. Crosby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:04
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/22; C07D311/26; C07D311/28; C07D311/32; A; A23; A23L; A23L27/00; A23L27/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
28 words
The dihydrochalcone represented by the formula ##STR24## wherein X is selected from between hydrogen and hydroxy and R is an alkyl of from one to four carbon atoms.
Claim 2
Dependent Claim
28 words
The dihydrochalcone represented by the formula ##STR24## wherein X is selected from between hydrogen and hydroxy and R is an alkyl of from one to four carbon atoms.
Claim 3
Dependent Claim
20 words
The dihydrochalcone of claim 1 wherein X is hydroxy and R is selected from among methyl, ethyl, n-propyl and n-butyl.
Claim 4
Dependent Claim
7 words
The dihydrochalcone represented by the formula ##STR25##
Claim 5
Dependent Claim
7 words
The dihydrochalcone represented by the formula ##STR25##
Claim 6
Dependent Claim
37 words
The dihydrochalcone represented by the formula ##STR26## wherein M is a physiologically acceptable cation, R is an alkyl of from 1 to 4 carbons, and y and z are positive numbers, the sum of which is 2.
Claim 7
Dependent Claim
37 words
The dihydrochalcone represented by the formula ##STR26## wherein M is a physiologically acceptable cation, R is an alkyl of from 1 to 4 carbons, and y and z are positive numbers, the sum of which is 2.
Claim 8
Dependent Claim
24 words
The dihydrochalcone of claim 4 wherein R is CH 3 and M is selected from among the cations of potassium, sodium, calcium and magnesium.
Claim 9
Dependent Claim
37 words
The dihydrochalcone represented by the formula ##STR27## wherein M is a physiologically acceptable cation, R is an alkyl of from 1 to 4 carbons, and y and z are positive numbers, the sum of which is 3.
Claim 10
Dependent Claim
37 words
The dihydrochalcone represented by the formula ##STR27## wherein M is a physiologically acceptable cation, R is an alkyl of from 1 to 4 carbons, and y and z are positive numbers, the sum of which is 3.
Claim 11
Dependent Claim
24 words
The dihydrochalcone of claim 6 wherein R is CH 3 and M is selected from among the cations of potassium, sodium, calcium and magnesium.
Claim 12
Dependent Claim
15 words
The dihydrochalcone of claim 7 wherein y is about 1 and z is about 2.
Claim 13
Dependent Claim
10 words
The dihydrochalcone of claim 8 wherein M is potassium cation.
Claim 14
Dependent Claim
15 words
The dihydrochalcone of claim 7 wherein y is about 2 and z is about 1.
Claim 15
Dependent Claim
10 words
The dihydrochalcone of claim 10 wherein M is potassium cation.
Claim 16
Dependent Claim
40 words
The dihydrochalcone representated by the formula ##STR28## wherein Z - is a physiologically acceptable conjugate base of a strong acid, X is selected from between hydrogen and hydroxyl, and R is an alkyl of from one to four carbon atoms.
Claim 17
Dependent Claim
40 words
The dihydrochalcone representated by the formula ##STR28## wherein Z - is a physiologically acceptable conjugate base of a strong acid, X is selected from between hydrogen and hydroxyl, and R is an alkyl of from one to four carbon atoms.
Claim 18
Dependent Claim
14 words
The dihydrochalcone of claim 12 wherein R is CH 3 and X is OH.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |