Patent US3989701A successfully refreshed from Google Patents.
US3989701A
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Diamine-benzophenones and a process for the preparation thereof
Assignee: Richter Gedeon Vegyeszeti Gyar Nyrt
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Filing: 1974-07-03
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Granted: 1976-11-02
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Expires: 1994-07-03
Abstract
Abstract New compounds of the general formula (I) wherein R1 and R2 each is a saturated or unsaturated, straight-chained or branched alkyl group, an aralkyl group, a saturated or unsaturated cycloalkyl group or an aryl group, or R1 and R2 together with the adjacent nitrogen atom may form substituted or unsubstituted heterocyclic group with or without a further oxygen or nitrogen heteroatom, and R3 is hydrogen or an acyl group derived from a C1-18 carboxylic acid.
Inventors
- 👤 Edit Toth
- 👤 Jozsef Torley
- 👤 Eva Palosi
- 👤 Szaboles Szeberenyi
- 👤 Laszlo Szporny
- 👤 Sandor Gorog
- 👤 Csilla Meszaros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:18
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/135; A; A61; A61P; A61P25/00; A61P25/24; A61P25/26
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
68 words
A compound of the formula: ##SPC5## wherein R 1 and R 2 together with the adjacent nitrogen form a 5 or 6 member saturated heterocyclic which is interrupted only by the adjacent nitrogen, by an additional nitrogen or by oxygen; and is unsubstituted or substituted with a lower alkyl and R 3 is hydrogen or C 1 to C 18 acyclic acyl; or a pharmaceutically acceptable salt thereof.
Claim 2
Dependent Claim
68 words
A compound of the formula: ##SPC5## wherein R 1 and R 2 together with the adjacent nitrogen form a 5 or 6 member saturated heterocyclic which is interrupted only by the adjacent nitrogen, by an additional nitrogen or by oxygen; and is unsubstituted or substituted with a lower alkyl and R 3 is hydrogen or C 1 to C 18 acyclic acyl; or a pharmaceutically acceptable salt thereof.
Claim 3
Dependent Claim
1 words
3-palmitoylamino-4-morpholino-benzophenone.
Claim 4
Dependent Claim
1 words
3-palmitoylamino-4-morpholino-benzophenone.
Claim 5
Dependent Claim
2 words
3-Amino-4-morpholino-benzophenone hydrochloride.
Claim 6
Dependent Claim
2 words
3-Amino-4-morpholino-benzophenone hydrochloride.
Claim 7
Dependent Claim
1 words
3-Amino-4-pyrrolidino-benzophenone.
Claim 8
Dependent Claim
1 words
3-Amino-4-pyrrolidino-benzophenone.
Claim 9
Dependent Claim
1 words
3-Amino-4-piperidino-benzophenone.
Claim 10
Dependent Claim
1 words
3-Amino-4-piperidino-benzophenone.
Claim 11
Dependent Claim
1 words
3-Amino-4-(N-methyl-piperazino)-benzophenone.
Claim 12
Dependent Claim
1 words
3-Amino-4-(N-methyl-piperazino)-benzophenone.
Claim 13
Dependent Claim
2 words
3-Amino-4-(N-methyl-piperazino)-benzophenone ethobromide.
Claim 14
Dependent Claim
2 words
3-Amino-4-(N-methyl-piperazino)-benzophenone ethobromide.
Claim 15
Dependent Claim
2 words
3-propionylamino-4-morpholino-benzophenone hydrochloride.
Claim 16
Dependent Claim
2 words
3-propionylamino-4-morpholino-benzophenone hydrochloride.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |