Axially chiral
<i>N,N′‐</i>
dioxides ethers for catalysis in enantioselective allylation of aldehydes
作者:Shijie Wu、Yongfei Xing、Jie Wang、Xingchen Guo、Huajie Zhu、Wan Li
DOI:10.1002/chir.23122
日期:2019.11
A series of axially chiral ethers synthesized from biscarboline N,N′‐dioxides, (S)‐1a to (S)‐1n, was investigated in enantioselectivity addition reactions of allyltrichlorosilane with a series of substituted aldehydes, including bulky substituted aldehydes. High enantioselectivities (up to 96%ee) were achieved using the catalyst (S)‐1k at 1 mol % loading.
Corticotropin-releasing factor (CRF) antagonists having formulae (I), (II) or (III) wherein the dashed lines, A, B, Y, Z, G, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.16 and R.sub.17 are as defined in the description, and processes for preparing them. These compounds and their pharmaceutically acceptable salts are useful in the treatment of CNS and stress-related disorders. ##STR1##