A CTGF expression inhibitor comprising a compound of the formula I:
a pharmaceutically acceptable salt or solvate thereof as an active ingredient,
(wherein Y is hydroxy or a group of the formula: -NH-SO2-Y' (wherein Y' is optionally substituted aryl or optionally substituted alkyl), and
R1 to R9 are each independently hydrogen, halogen, optionally substituted alkyl, optionally substituted alkoxy or the like).
α-ketoglutarate-dependent aryloxyalkanoate dioxygenases (AADs) are repurposed for applications in biocatalytic oxyfunctionalization. Activity profiling of natural AADs enabled the synthesis of four types of α-and β-hydroxy acids with broad scope, high efficiency, and good selectivity.
A CTGF expression inhibitor comprising a compound of the formula I:
a pharmaceutically acceptable salt or solvate thereof as an active ingredient, (wherein Y is hydroxy or a group of the formula: —NH—SO
2
—Y′ (wherein Y′ is optionally substituted aryl or optionally substituted alkyl), and
R
1
to R
9
are each independently hydrogen, halogen, optionally substituted alkyl, optionally substituted alkoxy or the like).
Copper-Photocatalyzed <i>Contra</i>-Thermodynamic Isomerization of Polarized Alkenes
The contra-thermodynamic isomerization of α- and β-substituted cinnamate derivatives catalyzed by the Cu(OAc)2/rac-BINAP complex under blue light irradiation is reported. The use of an oxazolidinone template, which favored the complexation of the copper catalyst to the substrate, allowed the E → Z isomerization of the catalytically formed chromophore under simple and robust reaction conditions in good
Asymmetric Nazarov Cyclizations of Unactivated Dienones by Hydrogen‐Bond‐Donor/Lewis Acid Co–Catalyzed, Enantioselective Proton‐Transfer
作者:Jan B. Metternich、Martin Reiterer、Eric N. Jacobsen
DOI:10.1002/adsc.202000831
日期:2020.10.6
cyclization catalyzed by chiral hydrogen‐bond‐donors in concert with silyl Lewis acids. The developed transformation provides access to tri‐substituted cyclopentenones in high levels of enantioselectivity (up to 95% e.e.) from a variety of simple unactivated dienones. Kinetic and mechanistic studies are consistent with a reversible 4π‐electrocyclization C−C bond‐forming step followed by rate‐ and enantio‐determining