Synthesis and Biological Evaluations of Cytotoxic and Antiangiogenic Triterpenoids-Jacaranone Conjugates
作者:Hua Sun、Partick Y.K. Yue、Shao-Rong Wang、Lihong Huo、Ying Zhao、Songbo Xie、Jens V. Kringelum、Ole Lund、Olivier Taboureau、Jun Zhou、Ricky N. S. Wong、Wei-Shuo Fang
DOI:10.2174/1573406412666160502153930
日期:2016.10.28
agents arises as a more effective and selective therapeutic approach for the treatment of cancer. In addition to reduced acute toxicity, the efficacy of chemotherapy could be improved when administered in combination specific antiangiogenic with cytotoxic agents. The conjugation or hybridization of bifunctional molecules is one of the alternative rationaldesign strategies for co-administration of anticancer
Reformatskyreactions of p-quinones with crystalline reagent (BrZnCH2CO2Et·THF)2 were investigated and took place successfully, providing β-hydroxy esters in high yield. Notably, in the case of 2,6-disubstituted-p-quinones, regioselective Reformatskyreactions occurred to give corresponding β-hydroxy esters in good yields.
研究了对苯醌与结晶试剂(BrZnCH 2 CO 2 Et·THF)2的重整反应,并成功进行,从而以高收率提供了β-羟基酯。明显地,在2,6-二取代的对苯醌的情况下,发生区域选择性的Reformatsky反应以良好的产率得到相应的β-羟基酯。
A Stereocontrolled Route to Cyclohexylethanoid Natural Products
Rengyol and seven related cyclohexylethanoid natural products have been synthesized in a stereocontrolled manner from a common starting material. In the present study the absolute configuration of the three chiral products has been determined and the first synthesis of a cyclohexylethanoid natural product bearing an oxetane ring has been accomplished.
Process for producing fused imidazole compound, reformatsky reagent in stable form, and process for producing the same
申请人:Nuwa Shigeru
公开号:US20050043544A1
公开(公告)日:2005-02-24
The present invention provides an industrially advantageous process for producing a steroid C
17,20
lyase inhibitor represented by the general formula (I):
and a Reformatsky reagent in a stable form suitable for the process.
In the present invention, a compound represented by the general formula (I) is produced by reducing a specific β-hydroxy ester compound derivative or a salt thereof obtained from a specific carbonyl compound in a Reformatsky reaction in the presence of a metal hydride complex and a metal halide, and then subjecting it to a ring-closing reaction. In the above Reformatsky reaction, it is useful to use a stable solution of a compound represented by the general formula BrZnCH
2
COOC
2
H
5
or a crystal of the compound which is represented by the formula (BrZnCH
2
COOC
2
H
5
.THF)
2
.