US2936313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of steroidal 21-phosphate derivatives
Assignee: Glaxo Laboratories Ltd
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Filing: 1958-11-18
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Granted: 1960-05-10
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Expires: 1978-11-18
Abstract
No abstract record available.
Inventors
- 👤 Elks Joseph
- 👤 Phillipps Gordon Hanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:28
CPC Classifications
C; C07; C07J; C07J5/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR THE PRODUCTION OF A 21-PHOSPHATE DERIVATIVE OF A STEROID COMPOUND SELECTED FROM THE GROUP CONSISTING OF PREGNANE AND ALLOPREGNANE COMPOUNDS, COMPRISING REACTING, IN AN INERT SOLVENT HAVING A DIELECTRIC CONSTANT OF AT LEAST 15, THE CORRESPONDING STEROID COMPOUND CONTAINING IN THE 21-POSITION A MEMBER SELECTED FROM THE GROUP CONSISTING OF A HALOGEN ATOM AND A LOWER ALKYL SUPHONYLOXY GROUP WITH A SALT OF AN ORGANIC BASE HAVING PKA OF AT LEAST 7 IN WATER AND A PHOSPHORIC ACID SELECTED FROM THE GROUP CONSISTING OF ORTHOPHOSPHORIC ACID AND PARTIALLY ESTERIFIED ORTHOPHOSPHORIC ACID.
Claim 2
Dependent Claim
94 words
A PROCESS FOR THE PRODUCTION OF A 21-PHOSPHATE DERIVATIVE OF A STEROID COMPOUND SELECTED FROM THE GROUP CONSISTING OF PREGNANE AND ALLOPREGNANE COMPOUNDS, COMPRISING REACTING, IN AN INERT SOLVENT HAVING A DIELECTRIC CONSTANT OF AT LEAST 15, THE CORRESPONDING STEROID COMPOUND CONTAINING IN THE 21-POSITION A MEMBER SELECTED FROM THE GROUP CONSISTING OF A HALOGEN ATOM AND A LOWER ALKYL SUPHONYLOXY GROUP WITH A SALT OF AN ORGANIC BASE HAVING PKA OF AT LEAST 7 IN WATER AND A PHOSPHORIC ACID SELECTED FROM THE GROUP CONSISTING OF ORTHOPHOSPHORIC ACID AND PARTIALLY ESTERIFIED ORTHOPHOSPHORIC ACID.
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) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |