Six-membered ring benzo derivatives as dpp-4 inhibitor and use thereof
US-2017313715-A1 · Nov 2, 2017 · US
Catalytic enantioselective synthesis of 2-aryl chromenes and related phosphoramidite ligands and catalyst compounds
US9840487B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9840487-B2 |
| Application number | US-201715487592-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 14, 2017 |
| Priority date | May 1, 2014 |
| Publication date | Dec 12, 2017 |
| Grant date | Dec 12, 2017 |
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Abstract
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Methods to access 2-aryl chromene compounds via an asymmetric catalytic process.
First claim
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We claim: 1. A composition comprising compounds of a formula wherein R is selected from H, halo, alkyl and alkoxy moieties and Ar is selected from phenyl and substituted phenyl moieties, said phenyl substituents selected from halo, alkyl, alkoxy, nitro and haloalkyl substituents, multiple said substituents and combinations thereof, said composition comprising at least about 70% an enantiomer of a formula 2. The composition of claim 1 wherein said phenyl moiety is selected from methyl, a methoxy, fluoro, chloro, nitro and dichloro substituted phenyl moieties, said composition comprising at least about 90% said enantiomer.
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the oxygen atom being part of a five-membered ring · CPC title
2,3-Dihydro derivatives, e.g. flavanones · CPC title
- C07D311/60Primary
with aryl radicals attached in position 2 · CPC title
Hydrogenated pyridine rings · CPC title
Asymmetric syntheses · CPC title
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Frequently asked questions
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- What does patent US9840487B2 cover?
- Methods to access 2-aryl chromene compounds via an asymmetric catalytic process.
- Who is the assignee on this patent?
- Univ Northwestern
- What technology area does this patent fall under?
- Primary CPC classification C07D311/60. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 12 2017 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).