Active derivatives of methylamine, therapeutic compositions containing the same and processes for preparing the said derivatives and compositions
Abstract
Abstract Methylamine derivatives of the formula: <IMAGE> and pharmaceutically acceptable acid addition salts thereof, wherein R1 and R3 each represent a hydrogen atom or a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 1 to 6 carbon atoms, R2 represents a straight- or branched-chain alkyl, alkenyl or alkynyl radical containing from 2 to 7 carbon atoms with the proviso that when R2 represents an alkenyl radical of the formula CH=CH-R4 or an alkynyl radical of the formula C 3BOND C-R4, in which R4 represents a hydrogen atom or a straight- or branched-chain alkyl radical of 1 to 5 carbon atoms, R1 and R3 each represent an atom of hydrogen or an alkyl radical, R1, R2 and R3 being such that no compound of formula I possesses more than 13 carbon atoms.
Inventors
- 👤 Charles Pigerol
- 👤 Pierre Eymard
- 👤 Jean-Claude Vernieres
- 👤 Jean-Pierre Werbenec
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |