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Asymmetric syntheses for spiro-oxindole compounds useful as therapeutic agents
US9487535B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9487535-B2 |
| Application number | US-201313794147-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 11, 2013 |
| Priority date | Apr 12, 2012 |
| Publication date | Nov 8, 2016 |
| Grant date | Nov 8, 2016 |
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Abstract
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This invention is directed to asymmetric syntheses of certain spiro-oxindole derivatives, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
First claim
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What is claimed is: 1. A method of preparing a compound of formula (I): as an isolated (S)-enantiomer, or a non-racemic mixture of enantiomers having an enantiomeric excess of the (S)-enantiomer of greater than 80%, or a pharmaceutically acceptable salt thereof; wherein: p and r are each independently 1, 2, 3 or 4; R 1 is hydrogen, alkyl, alkenyl,…
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Human Necessities · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US9487535B2 cover?
- This invention is directed to asymmetric syntheses of certain spiro-oxindole derivatives, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
- Who is the assignee on this patent?
- Xenon Pharmaceuticals Inc
- What technology area does this patent fall under?
- Primary CPC classification C07D491/20. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 08 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).