US4009077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of phenopicolinic acid
Assignee: Nippon Shinyaku Co Ltd
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Filing: 1975-08-22
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Granted: 1977-02-22
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Expires: 1995-08-22
Abstract
Abstract Phenopicolinic acid is produced by culturing a strain of Paecilomyces. The compound, which may be alternatively named as 5-(4-hydroxybenzyl)-2-pyridinecarboxylic acid, is a hypotensive agent.
Inventors
- 👤 Osamu Tanabe
- 👤 Akira Obayashi
- 👤 Teruya Nakamura
- 👤 Osamu Suzuka
- 👤 Masao Murayama
- 👤 Shingo Matsumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:28
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C12; C12N; C12N1/00; C12N1/14; C12N1/145; C12P; C12P17/00; C12P17/10; C12P17/12; C12R; C12R2001/00; C12R2001/645; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
55 words
Process for preparation of phenopicolinic acid of the formula: ##STR2## which comprises culturing a phenopicolinic acid producing strain of the genus Paecilomyces, under aerobic conditions in a medium containing one or more assimilable sources of carbon and one or more assimilable sources of nitrogen, and isolating the phenopicolinic acid thus formed from the culture broth.
Claim 2
Dependent Claim
55 words
Process for preparation of phenopicolinic acid of the formula: ##STR2## which comprises culturing a phenopicolinic acid producing strain of the genus Paecilomyces, under aerobic conditions in a medium containing one or more assimilable sources of carbon and one or more assimilable sources of nitrogen, and isolating the phenopicolinic acid thus formed from the culture broth.
Claim 3
Dependent Claim
16 words
The process according to claim 1 wherein the strain is Paecilomyces sp. AF 2562 (ATCC 20463).
References Cited (Backward Citations)
US3847742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |