4-(6-methyl-4,8-dioxo-1,3,6,2-dioxazaborocan-2-yl)benzaldehyde;(4-formylphenyl)boronic acid MIDA ester;4-(5-Methyl-3,7-dioxo-2,8-dioxa-5-azonia-1-boranuidabicyclo[3.3.0]octan-1-yl)benzaldehyde;4-(5-methyl-3,7-dioxo-2,8-dioxa-5-azonia-1-boranuidabicyclo[3.3.0]octan-1-yl)benzaldehyde
由于其对大多数合成试剂的敏感性,通常需要在使用之前引入硼酸官能团。克服了这一重要限制,我们在此报道空气和色谱稳定的 MIDA 硼酸盐与多种常用试剂兼容,这使得能够从简单的含 B 起始材料多步合成复杂的硼酸结构单元。X 射线和变温 NMR 研究将 MIDA 硼酸盐的独特稳定性与潜在反应性硼 p 轨道和/或氮孤对电子的动力学不可接近性联系起来。这些发现被共同利用,通过结构复杂的 MIDA 保护的卤代硼酸构件的迭代交叉偶联,实现了 (+)-crocacin C 的短程模块化全合成。
of the furo[3,2‐b]pyridine core as a novel scaffold for potent and highly selective inhibitors of cdc‐like kinases (CLKs) and efficient modulators of the Hedgehog signaling pathway. Initially, a diverse target compound set was prepared by synthetic sequences based on chemoselective metal‐mediatedcouplings, including assembly of the furo[3,2‐b]pyridine scaffold by copper‐mediated oxidative cyclization
Bespoke SnAP Reagents for the Synthesis of C-Substituted Spirocyclic and Bicyclic Saturated N-Heterocycles
作者:Kimberly Geoghegan、Jeffrey W. Bode
DOI:10.1021/acs.orglett.5b00618
日期:2015.4.17
N-heterocycles is readily achieved by the combination of aldehydes and new SnAPreagents. The substituted SnAPreagents are readily prepared from simple starting materials and couple with a variety of aromatic and heteroaromatic aldehydes at room temperature under operationally simple conditions to deliver substituted morpholine and piperazine products.
NOVEL N-SUBSTITUTED 5-HYDROXYPYROLLINDES AS INHIBITORS OF MDM2-P53 INTERACTIONS
申请人:Liu Jin-Jun
公开号:US20120149660A1
公开(公告)日:2012-06-14
There are provided compounds of formula I
or a pharmaceutically acceptable salt thereof, wherein X, Y, R
1
, R
2
, R
3
, R
4
, R
5
are as defined herein. The compounds exhibit activity as anticancer agents.
申请人:Korea University Research and Business Foundation 고려대학교 산학협력단(220040170680) BRN ▼209-82-08298
公开号:KR101653532B1
公开(公告)日:2016-09-05
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