US4145527A
Expired / Lapsed
US
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Nitro aromatic glycosides
Assignee: Dade International Inc
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Filing: 1978-03-20
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Granted: 1979-03-20
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Expires: 1998-03-20
Abstract
Abstract Nitroaromatic derivatives of glycosides such as maltotetraose, maltopentaose and maltohexaose are described. These compounds are useful as standard substrates for the assay of α-amylase either manually or automatically on suitable instruments.
Inventors
- 👤 Richard C. Burns
- 👤 Alexander L. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:16
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C07H15/00; C07H15/20; C07H15/203; C12; C12Q; C12Q1/00; C12Q1/34; C12Q1/40
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
A compound having the formula: ##STR24## wherein the configuration of the substituent --OR on the anomeric carbon is α- or β-, n is an integer of 2, 3 or 4, and R is a substituted aromatic radical selected from the group consisting of: ##STR25## wherein X and Y are individually H, NO 2 halogen, alkyl of 1 to 4 carbon atoms, OR 1 or CO 2 R 1 , where R 1 is an alkyl group of 1 to 6 carbon atoms, with the proviso that at least one of X and Y is NO 2 .
Claim 2
Dependent Claim
97 words
A compound having the formula: ##STR24## wherein the configuration of the substituent --OR on the anomeric carbon is α- or β-, n is an integer of 2, 3 or 4, and R is a substituted aromatic radical selected from the group consisting of: ##STR25## wherein X and Y are individually H, NO 2 halogen, alkyl of 1 to 4 carbon atoms, OR 1 or CO 2 R 1 , where R 1 is an alkyl group of 1 to 6 carbon atoms, with the proviso that at least one of X and Y is NO 2 .
Claim 3
Dependent Claim
9 words
The compound of claim 1 wherein R is ##STR26##
Claim 4
Dependent Claim
14 words
The compound of claim 2 wherein X is NO 2 and Y is H.
Claim 5
Dependent Claim
9 words
The compound of claim 1 wherein R is 4-nitrophenyl.
Claim 6
Dependent Claim
9 words
The compound of claim 4 wherein n is 2.
Claim 7
Dependent Claim
9 words
The compound of claim 4 wherein n is 3.
Claim 8
Dependent Claim
16 words
A composition of matter comprising a mixture of the α and β compounds of claim 1.
Claim 9
Dependent Claim
20 words
A composition of matter comprising a mixture of the α and β compounds of claim 1 wherein R is ##STR27##
Claim 10
Dependent Claim
25 words
A composition of matter comprising a mixture of the α and β compounds of claim 1 wherein X is NO 2 and Y is H.
Claim 11
Dependent Claim
20 words
A composition of matter comprising a mixture of the α and β compounds of claim 1 wherein R is 4-nitrophenyl.
Claim 12
Dependent Claim
20 words
A composition of matter comprising a mixture of the α and β compounds of claim 1 wherein n is 2.
Claim 13
Dependent Claim
20 words
A composition of matter comprising a mixture of the α and β compounds of claim 1 wherein n is 3.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |