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。
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。
A composition and method of cancer treatment is disclosed. The composition and method utilized the extract of
B. papyrifera
, or compounds included therein having aromatase inhibition properties, as active cancer chemopreventative and treating agents in mammals, including humans.
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
[EN] AROMATASE INHIBITORS FROM BROUSSONETIA PAPYRIFERA<br/>[FR] INHIBITEURS DE L'AROMATASE PROVENANT DE BROUSSONETIA PAPYRIFERA
申请人:UNIV ILLINOIS
公开号:WO2003013554A2
公开(公告)日:2003-02-20
A composition and method of cancer treatment is disclosed. The composition and method utilize the extract of B. papyrifera, or compounds included therein having aromatase inhibition properties, as active cancer chemopreventative and treating agents in mammals, including humans.