Diels-alder adduct from streptazoline and naphthoquinones andits oxidation products, a process for their preparation and their use
CA 1286288 C · Owner: Wiesner, Matthias · Inventors: Kraemer, Hans P.; Voelskow, Hartmut; Thiem, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Streptazoline is reacted with naphthoquinones in a Diels- Alder reaction, and the adduct is then oxidized. The resulting compounds have cytotoxic activity in particular, against leukemia cells, and have an antimicrobial action and act against protozoa.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.