Patent US3728350A successfully refreshed from Google Patents.
US3728350A
Expired / Lapsed
US
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1-(2-carboxyphenyl)-5,7-dimethoxy-3,4-dihydrocarbostyril intermediates for acronycis
Assignee: Eli Lilly and Co
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Filing: 1971-07-06
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Granted: 1973-04-17
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Expires: 1991-07-06
Abstract
Abstract The total synthesis of acronycine and related compounds with readily available 1-(2-carboxyphenyl)-5,7-dialkoxy-3,4dihydrocarbostyrils is described, as are various classes of other intermediates useful in the synthesis.
Inventors
- 👤 J Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:58
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/22; C07D215/227; C07D219/00; C07D219/04; C07D219/06; C07D455/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3117959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |