Initial structure–activity relationship of a novel class of nonpeptidyl GnRH receptor antagonists: 2-arylindoles
摘要:
A nonpeptidyl GnRH receptor antagonist (1), with a unique 2-arylindole core, was identified through the Merck inhouse screening for binding affinity on the rat GnRH receptor. SAR studies directed toward the alkoxy-ethanolamine and 2-aryl groups resulted in a simpler lead structure with improved activity. This compound 50 exhibits a 60-fold improvement in binding activity over our initial lead 1. (C) 2001 Elsevier Science Ltd. All rights reserved.
Chemoselective and Enantioselective Oxidation of Indoles Employing Aspartyl Peptide Catalysts
作者:Filip Kolundzic、Mohammad N. Noshi、Meiliana Tjandra、Mohammad Movassaghi、Scott J. Miller
DOI:10.1021/ja202706g
日期:2011.6.15
synthesis, reports of catalytic enantioselective indole oxidation remain sparse. Here we report a highly chemoselective catalytic system for the indole oxidation that delivers 3-hydroxy-indolenines with good chemical yields and moderate to high levels of enantio- and diastereoselectivity (up to 95:5 er and up to 92:8 dr). These results represent, to our knowledge, the most selective values yet reported in
催化对映选择性吲哚氧化是一个与复杂生物碱化学特别相关的过程,因为它与它们的生物合成有关。在合成方法的背景下,催化对映选择性吲哚氧化允许快速和仿生进入几类生物碱天然产物。尽管在全合成中具有这种潜在的高实用性,但催化对映选择性吲哚氧化的报道仍然很少。在这里,我们报告了一种用于吲哚氧化的高度化学选择性催化系统,该系统以良好的化学产率和中到高水平的对映选择性和非对映选择性(高达 95:5 er 和高达 92:8 dr)提供 3-羟基-吲哚啉。据我们所知,这些结果代表了文献中报道的催化不对称吲哚氧化的最具选择性的值。