New Drug-Like Hydroxyphenylnaphthol Steroidomimetics As Potent and Selective 17β-Hydroxysteroid Dehydrogenase Type 1 Inhibitors for the Treatment of Estrogen-Dependent Diseases
摘要:
Inhibition of 17 beta-hydroxysteroid dehydrogenase type 1 (17 beta-HSD1) is a novel and attractive approach to reduce the local levels of the active estrogen 17 beta-estradiol in patients with estrogen-dependent diseases like breast cancer or endometriosis. With the aim of optimizing the biological profile of 17 beta-HSD1 inhibitors from the hydroxyphenylnaphthol class, structural optimizations were performed at the 1-position of the naphthalene by introduction of different heteroaromatic rings as well as substituted phenyl groups. In the latter class of compounds, which were synthesized applying Suzuki-cross coupling, the 3-methane-sulfonamide 15 turned out to be a highly potent 17 beta-HSD1 inhibitor (IC50 = 15 nM in a cell-free assay). It was also very active in the cellular assay (T47D cells, IC50 = 71 nM) and selective toward 17 beta-HSD2 and the estrogen receptors alpha and beta. It showed a good membrane permeation and metabolic stability and was orally available in the rat.
Construction of Axially Chiral Arylborons via Atroposelective Miyaura Borylation
作者:Kai Yang、Yanfei Mao、Jie Xu、Hao Wang、Yong He、Wangyang Li、Qiuling Song
DOI:10.1021/jacs.1c04345
日期:2021.7.14
well-developed centrally chiral boron chemistry, C–B axiallychiral chemistry remains elusive and challenging. Herein we report the first atroposelective Miyaura borylation of bromoarenes with unsymmetrical diboron reagents for the direct catalytic synthesis of optically active atropisomeric arylborons. This reaction features broad substrate scope and produces axiallychiral arylborons with high yields
efficient synthesis of axiallychiral heterobiaryl molecules, especially ones having multiple heteroatoms and other types of chiral elements, through radical routes remains extremely limited. We herein disclose the first catalytic asymmetric, metal-free construction of axially and centrally chiral heterobiaryls by Minisci reaction of 5-arylpyrimidines and α-amino acid-derived redox-active esters. This is
Atroposelective Synthesis of Axially Chiral Styrenes Connecting an Axially Chiral Naphthyl-indole Moiety Using Chiral Phosphoric Acid Catalysis
作者:Alemayehu Gashaw Woldegiorgis、Haorui Gu、Xufeng Lin
DOI:10.1021/acs.orglett.3c00425
日期:2023.3.31
The organocatalytic asymmetric reactions of C2-unsubstituted racemic naphthyl-indoles with orthoalkynylnaphthols were employed to synthesize axiallychiral styrenes connected to an axiallychiral naphthyl-indole unit. Utilizing chiralphosphoricacid as the catalyst, these axiallychiral styrenes were prepared in good yields (up to 96%) and excellent stereoselectivity (up to >99.9% ee, >20:1 dr, and
C2-未取代的外消旋萘基吲哚与邻炔基萘酚的有机催化不对称反应用于合成连接到轴向手性萘基吲哚单元的轴向手性苯乙烯。利用手性磷酸作为催化剂,这些轴向手性苯乙烯以良好的产率(高达 96%)和出色的立体选择性(高达 >99.9% ee、>20:1 dr 和 >99:1 E / Z )在温和的条件。此外,以高产率和出色的立体控制实现了进一步的合成转化。