US3906044A
Expired / Lapsed
US
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Adamantylamidines and processes for making them
Assignee: Kao Corp
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Filing: 1974-10-16
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Granted: 1975-09-16
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Expires: 1994-10-16
Abstract
Abstract Adamantyl amidines having the following formula (I) and their acid addition salts: wherein Ad is adamantyl or bridgehead carbon atom-substituted alkyladamantyl, n is 0 or 1, and the amidino or amidinomethyl group is attached to a bridgehead carbon atom of the adamantane ring. The compounds are prepared by (1) reacting said nitrile compounds in the anhydrous state with an alcohol and an acid and then reacting the product with ammonia, or (2) reacting the corresponding nitrile compounds with a metal amide. The compounds are useful as anti-viral agents and as intermediates of adamantyl-substituted heterocyclic compounds.
Inventors
- 👤 Koji Aigami
- 👤 Yoshiaki Inamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:09
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/04; C07D207/10; C07D207/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
8 words
A compound according to claim 1, adamantylacetamidine hydrochloride.
Claim 4
Dependent Claim
8 words
A compound according to claim 1, adamantylacetamidine sulfate.
Claim 5
Dependent Claim
8 words
A compound according to claim 1, adamantylacetamidine thiosulfate.
References Cited (Backward Citations)
US3732305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |