US4029699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3,(2,4,5-Trisubstituted benzoyl)-propionic acid and the salts thereof
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1975-11-26
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Granted: 1977-06-14
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Expires: 1995-11-26
Abstract
Abstract A compound of the formula ##STR1## wherein R 1 is a C 1-4 alkoxy, R 2 is C 1-4 alkyl and R 3 is C 1-4 alkylthio or pharmaceutically acceptable salts thereof. The compounds of the present invention exhibit excellent choleretic activity.
Inventors
- 👤 Tadakazu Murata
- 👤 Akira Nohara
- 👤 Hirosada Sugihara
- 👤 Yasushi Sanno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:57
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; C; C07; C07C; C07C59/00; C07C59/40; C07C59/76; C07C59/90
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
46 words
A compound of the formula ##STR8## wherein R 1 is an alkoxy group of 1 to 4 carbons, R 2 is an alkyl group of 1 to 4 carbons and R 3 is an alkylthio group of 1 to 4 carbons or pharmaceutically acceptable salts thereof.
Claim 2
Dependent Claim
46 words
A compound of the formula ##STR8## wherein R 1 is an alkoxy group of 1 to 4 carbons, R 2 is an alkyl group of 1 to 4 carbons and R 3 is an alkylthio group of 1 to 4 carbons or pharmaceutically acceptable salts thereof.
Claim 3
Dependent Claim
11 words
A compound claimed in claim 1 which is 3-(2'-ethoxy-4'-methyl-5'-methylthiobenzoyl) propionic acid.
References Cited (Backward Citations)
US3860722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |