US4416878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
[8-(Dialkylamino alkoxy)-caffeine]-platinum complex compounds and pharmaceutical products containing the same
Assignee: Individual
•
Filing: 1981-12-04
•
Granted: 1983-11-22
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Expires: 2001-12-04
Abstract
Abstract New [8-(dialkylamino alkoxy)-caffeine]-platinum complex compounds of the general formula <IMAGE> are prepared from 8-(dialkylamino alkoxy)-caffeine and hexachloro platinic acid. The complex compounds are nonpoisonous, stable and infinitely durable. In pharmacological test series distinct cytostatic activity of the complex compounds is observed and they are suitable for use as active components in pharmaceutical products.
Inventors
- 👤 Josef Klosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:10
CPC Classifications
C; C07; C07D; C07D473/00; C07D473/02; C07D473/04; C07D473/06; C07D473/12; A; A61; A61P; A61P35/00; C07F; C07F15/00; C07F15/0006; C07F15/0086; C07F15/0093
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
27 words
Di-[8-(dialkylamino alkoxy)-caffeine]-hexachloroplatinates of the formula: ##STR4## wherein n is 2 or 3 and R is a straight or branched alkyl having from 1 to 3 carbon atoms.
Claim 2
Dependent Claim
27 words
Di-[8-(dialkylamino alkoxy)-caffeine]-hexachloroplatinates of the formula: ##STR4## wherein n is 2 or 3 and R is a straight or branched alkyl having from 1 to 3 carbon atoms.
Claim 3
Dependent Claim
30 words
A pharmaceutical composition for the treatment of malignant tumors containing as the active ingredient a cytostatically effective amount of the compound of claim 1 together with a pharmaceutically acceptable carrier.
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) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |