Synthesis of 2<i>H</i>-Chromenes via Hydrazine-Catalyzed Ring-Closing Carbonyl-Olefin Metathesis
作者:Yunfei Zhang、Janis Jermaks、Samantha N. MacMillan、Tristan H. Lambert
DOI:10.1021/acscatal.9b03656
日期:2019.10.4
The catalytic ring-closing carbonyl-olefin metathesis (RCCOM) of O-allyl salicylaldehydes to form 2H-chromenes is described. The method utilizes a [2.2.1]-bicyclic hydrazine catalyst and operates via a [3 + 2]/retro-[3 + 2] metathesis manifold. The nature of the allyl substitution pattern was found to be crucial, with sterically demanding groups such as adamantylidene or diethylidene offering optimal
two‐step: Chroman‐3‐ones are important intermediates for organic synthesis and medicinal chemistry. However, their syntheses require multiple steps and are not efficient. By using gold‐catalyzed alkyne oxidation, this versatile heterocycle can be prepared in only two steps from readily available phenols and with mostly high efficiencies (see scheme).
Provided is a compound represented by the following general formula (I), or a pharmaceutically acceptable salt thereof. This novel compound has a glycogen-synthase activation ability, but activates a receptor PPAR to a low degree and is highly safe.
In the formula, Ar is an aromatic carbocyclic ring or a heterocyclic ring; and Ar
2
is represented by any one of the following rings and the like.
6-membered aza-heterocyclic containing delta-opioid receptor modulating compounds, methods of using and making the same
申请人:Trevena, Inc.
公开号:US10246436B2
公开(公告)日:2019-04-02
The present embodiments are directed, in part, to compounds, or pharmaceutically acceptable salts thereof, or pharmaceutical compositions thereof for modulating the activity of delta opioid receptor, biased and/or unbiased, and/or methods for treating pain, migraines, headaches, depression, Parkinsons Disease, anxiety, and/or overactive bladder, and other disorders and conditions described herein or any combination thereof.