我们开发出了一种简便快捷的方法,用于全合成对醌类天然化合物布鲁索酮 A。该合成的主要特点包括 Grubbs II 催化剂介导的两个芳香族亚基的交叉偏析,以及在两个苯酚分子存在下的化学选择性氧化脱芳烃反应。特别是还研究了与正交烷氧基苯乙烯的 CM 反应相关的优化问题,众所周知,在传统反应条件下,正交烷氧基苯乙烯对 Ru 催化的复分解反应无效,因为正交烷氧基可能会配位到钌中心,从而导致催化剂抑制的潜在并发症。
The present disclosure is generally directed to compounds which can modulate G-protein coupled receptor 88, compositions comprising such compounds, and methods for modulating G-protein coupled receptor 88.
Anti-Markovnikov Hydroalkylation of Styrene Derivatives via Hydrazones Catalyzed by Ru-PNP Complex
作者:Siyi Luo、Hanh D. M. Pham、Chen-Chen Li、Zihang Qiu、Ruofei Cheng、Rustam Z. Khaliullin、Chao-Jun Li
DOI:10.1021/acs.orglett.4c00610
日期:2024.4.19
Ru(II)-PNP complex demonstrated high activity in the anti-Markovnikov hydroalkylation of nonpolarized terminal alkenes via hydrazones. Hydrazone served as a carbanion equivalent to combine with the electrophilic alkene substrate upon activation by the ruthenium catalyst, forming a new C–C bond in a concerted pathway with N2 as the only theoretical byproduct. Experimental and computationalstudies suggested
Enantioselective total synthesis of hydramicromelin B
作者:Xing Huo、Xingfeng Ren、Yanfen Xu、Xinyun Li、Xuegong She、Xinfu Pan
DOI:10.1016/j.tetasy.2008.01.006
日期:2008.2
The first total synthesis of hydramicromelin B is described. An AuCl(3)/AgOTf-catalyzed intramolecular reaction was used as key step for the construction the coumarin ring. (C) 2008 Elsevier Ltd. All rights reserved.