Synthesis and biological evaluations of chalcones, flavones and chromenes as farnesoid x receptor (FXR) antagonists
摘要:
Farnesoid X receptor (FXR), a nuclear receptor mainly distributed in liver and intestine, has been regarded as a potential target for the treatment of various metabolic diseases, cancer and infectious diseases related to liver. Starting from two previously identified chalcone-based FXR antagonists, we tried to increase the activity through the design and synthesis of a library containing chalcones, flavones and chromenes, based on substitution manipulation and conformation (ring closure) restriction strategy. Many chalcones and four chromenes were identified as microM potent FXR antagonists, among which chromene 11c significantly decreased the plasma and hepatic triglyceride level in KKay mice. (C) 2017 Elsevier Masson SAS. All rights reserved.
Synthesis and biological evaluations of chalcones, flavones and chromenes as farnesoid x receptor (FXR) antagonists
摘要:
Farnesoid X receptor (FXR), a nuclear receptor mainly distributed in liver and intestine, has been regarded as a potential target for the treatment of various metabolic diseases, cancer and infectious diseases related to liver. Starting from two previously identified chalcone-based FXR antagonists, we tried to increase the activity through the design and synthesis of a library containing chalcones, flavones and chromenes, based on substitution manipulation and conformation (ring closure) restriction strategy. Many chalcones and four chromenes were identified as microM potent FXR antagonists, among which chromene 11c significantly decreased the plasma and hepatic triglyceride level in KKay mice. (C) 2017 Elsevier Masson SAS. All rights reserved.
Synthesis of Robalzotan, Ebalzotan, and Rotigotine Precursors via the Stereoselective Multienzymatic Cascade Reduction of α,β-Unsaturated Aldehydes
作者:Elisabetta Brenna、Francesco G. Gatti、Luciana Malpezzi、Daniela Monti、Fabio Parmeggiani、Alessandro Sacchetti
DOI:10.1021/jo4003097
日期:2013.5.17
The key step is based on a multienzymatic reduction of an α,β-unsaturated aldehyde or ketone to give the saturated primary or secondary alcohol, in a high yield and with a high ee. The catalytic system consists of the combination of an ene-reductase (ER; i.e., OYE2 or OYE3 belonging to the Old Yellow Enzyme family) with an alcohol dehydrogenase (ADH), applying the in situ substrate feeding product removal
Productivity enhancement of CC bioreductions by coupling the in situ substrate feeding product removal technology with isolated enzymes
作者:Elisabetta Brenna、Francesco G. Gatti、Daniela Monti、Fabio Parmeggiani、Alessandro Sacchetti
DOI:10.1039/c1cc16014a
日期:——
To overcome the usually low productivities of the CC bond bioreduction of α,β-unsaturated aldehydes we combined the in situ substrate feeding product removal (SFPR) technology with a cascade system comprising an isolated ene-reductase and a chemoselective alcohol dehydrogenase.
为了克服α、β-不饱和醛的 CC 键生物还原中通常存在的低生产率问题,我们将原位底物进料产物去除(SFPR)技术与由分离的烯还原酶和化学选择性醇脱氢酶组成的级联系统相结合。