A transition metal‐free approach for the N‐arylation of amino acid derivatives has been developed. Key to this method is the use of unsymmetricdiaryliodoniumsalts with anisyl ligands, which proved important to obtain high chemoselectivity and yields. The scope includes the transfer of both electron deficient, electron rich and sterically hindered aryl groups with a variety of different functional
[EN] LYSOPHOSPHATIDIC ACID RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DES RÉCEPTEURS D'ACIDE LYSOPHOSPHATIDIQUE
申请人:INTERMUNE INC
公开号:WO2013025733A1
公开(公告)日:2013-02-21
Compounds, methods of making such compounds, pharmaceutical compositions and medicaments comprising such compounds, and methods of using such compounds to treat, prevent or diagnose diseases, disorders, or conditions associated with one or more of the lysophosphatidic acid receptors are provided.
By using cheap and innocuous sodiumchlorite, a series of tertiary amines have been oxidized to the corresponding lactams with good selectivity and high yield. In this method, neither transition-metal catalyst nor oxidant was used. In the oxidation step, the pH of the sodiumchlorite was precisely adjusted to pH around 6 using CO2, such pH is a compromise between oxidative properties, chemical stability
通过使用廉价、无害的亚氯酸钠,一系列叔胺被氧化成相应的内酰胺,具有良好的选择性和高收率。在该方法中,既不使用过渡金属催化剂,也不使用氧化剂。在氧化步骤中,使用 CO 2将亚氯酸钠的 pH 值精确调节到 6 左右,这样的 pH 值是氧化特性、化学稳定性和不需要的沉淀之间的折衷。此外,缓冲盐不是必需的,这使得这种氧化反应可以在安全和环境友好的条件下进行。
Antifungal Agents
申请人:Thomson Samantha Patricia
公开号:US20080161302A1
公开(公告)日:2008-07-03
Compounds of formula (I), and pharmaceutically acceptable salts thereof, may be used in therapy, for example as antifungal agents: (I) wherein: R1, R2, R3, R4, R5, R6, R7, X and X
1
are as defined herein. Certain compounds of formula (I) are also provided. Compounds of formula (T), and agriculturally acceptable salts thereof, may also be used as agricultural fungicides.