US4408052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phospholipid carbamates
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1981-02-25
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Granted: 1983-10-04
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Expires: 2001-02-25
Abstract
Abstract New carbamic acid esters, inclusive of salts thereof, which have the formula: ##STR1## wherein n is zero or 1; R 1 and R 2 independently represent --H, --OCH 3 or --OCONHR 6 ; in which R 6 is C 8-26 aliphatic hydrocarbon residue provided that at least one of R 1 and R 2 is --OCONHR 6 ; and R 3 , R 4 and R 5 independently represent hydrogen or lower alkyl, or ##STR2## represents cyclic ammonio, exhibit inhibitory activity to multiplication of tumor cells and antimicrobial activity.
Inventors
- 👤 Motoo Hozumi
- 👤 Hiroaki Nomura
- 👤 Yoshio Yoshioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:39
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6536; C07F9/6539; A; A01; A01N; A01N57/00; A01N57/10; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C07F9/10; C07F9/553; C07F9/576; C07F9/58
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
25 words
A compound of the formula: ##STR45## wherein R 2 is H or methoxy and X is pyridinio or thiazolio or a pharmaceutically acceptable salt thereof.
Claim 2
Dependent Claim
25 words
A compound of the formula: ##STR45## wherein R 2 is H or methoxy and X is pyridinio or thiazolio or a pharmaceutically acceptable salt thereof.
Claim 3
Dependent Claim
10 words
A compound according to claim 1 wherein X is pyridinio.
Claim 4
Dependent Claim
14 words
A compound according to claim 2 wherein the C 8-26 -alkyl group is octadecyl.
Claim 5
Dependent Claim
10 words
A compound according to claim 1 wherein X is thiazolio.
Claim 6
Dependent Claim
14 words
A compound according to claim 4 wherein the C 8-26 alkyl group is octadecyl.
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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |