Process for preparing indoleacetic acid ester derivatives
CA 1069889 A · Owner: Hisamitsu Pharmaceutical Co. · Inventors: Nakagawa, Akira; Miyata, Satoru; Noda, Kanji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the processes for preparing indoleacetic acid ester derivatives of the following general formula :, wherein n represents an integer from one to 3 ; R is selected from the group consisting of hydroxyl, halogen trihalomethyl, alkoxy, acyloxy, substituted phenyl pyridyl and substituted pyridyl. The compounds of the present invention possess a high degree of pharmacological activities such as analgetic anti-inflammatory, and anti-pyretic activities as well as low side effects on the gastrointestinal tracts when given orally and topically and, therefore they may be useful as analgesics anti-inflammatories, and anti-pyretics for internal and external use.
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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 January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.