Method for synthesis of lactic acid and its derivatives and catalyst for preparing same
US-2015329458-A1 · Nov 19, 2015 · US
Treprostinil production
US8940930B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8940930-B2 |
| Application number | US-201213435708-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 30, 2012 |
| Priority date | Jun 3, 2010 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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The present invention is directed to a novel method for preparing a synthetic intermediates for treprostinil. Also described are methods of preparing treprostinil comprising utilizing novel intermediates described herein as well as novel intermediates useful for synthesis prostacyclin derivatives, such as treprostinil.
First claim
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What is claimed is: 1. A method of preparing treprostinil or a pharmaceutically acceptable salt thereof comprising a cyclization reaction in which a compound of the formula: is converted into a compound of the formula: followed by hydrogenation, reaction with a redu…
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Frequently asked questions
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- What does patent US8940930B2 cover?
- The present invention is directed to a novel method for preparing a synthetic intermediates for treprostinil. Also described are methods of preparing treprostinil comprising utilizing novel intermediates described herein as well as novel intermediates useful for synthesis prostacyclin derivatives, such as treprostinil.
- Who is the assignee on this patent?
- Batra Hitesh, Penmasta Raju, Sharma Vijay, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C07C51/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 27 2015 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).