PROTEIN CROSSLINKING INHIBITOR AND USE OF THE SAME
申请人:Mikoshiba Katsuhiko
公开号:US20120277423A1
公开(公告)日:2012-11-01
The present invention relates to: a ketone compound having transglutaminase-inhibiting activity, which is represented by the following Formula 1, 2, or 3:
wherein R
1
is a substituted or unsubstituted aryl or heterocyclyl group, R
2
, R
3
, and R
4
are hydrogen atoms, n is 2, X is halogen, R
5
and R
6
independently represent a hydrogen atom or a substituted or unsubstituted C1-C10 alkyl, aryl, or aralkyl group, wherein R
5
and R
6
are not hydrogen atoms at the same time, or R
5
and R
6
may be taken together to form a saturated or unsaturated and substituted or unsubstituted heterocyclyl group containing a nitrogen atom (N); an inhibitor of protein crosslinking comprising the compound; and a composition for preventing or treating a protein-crosslinking causative disease, which comprises the compound or the protein crosslinking inhibitor.
Brønsted Base-Catalyzed Transformation of α,β-Epoxyketones Utilizing [1,2]-Phospha-Brook Rearrangement for the Synthesis of Allylic Alcohols Having a Tetrasubstituted Alkene Moiety
stereoselective transformation of α,β-epoxyketones into alkenylphosphates having a hydroxymethyl group on the β-carbon was established by utilizing the [1,2]-phospha-Brook rearrangement under Brønsted base catalysis. The reaction involves the catalytic generation of an α-oxygenated carbanion located at the α-position of an epoxide moiety through the [1,2]-phospha-Brook rearrangement and the following
Iron-Catalyzed α-Methylenation of Ketones with<i>N</i>,<i>N</i>-Dimethylacetamide: An Approach for α,β-Unsaturated Carbonyl Compounds
作者:Yi-Ming Li、Shao-Jie Lou、Qin-Hua Zhou、Lian-Wen Zhu、Long-Feng Zhu、Lei Li
DOI:10.1002/ejoc.201500189
日期:2015.5
this study, we developed a general iron-catalyzedα-methylenation of ketones by using N,N-dimethylacetamide as the one-carbon source. Various ketones, including aryl and alkyl ketones, enones, and dicarbonyl compounds were well tolerated to yield the corresponding α,β-unsaturatedcarbonylcompounds in the presence of an iron catalyst, peroxides, and N,N-dimethylacetamide under aerobic conditions.
Asymmetric hydroazidation of α -substituted vinyl ketones catalyzed by chiral primary amine
作者:Zai-Kun Xue、Nian-Kai Fu、San-Zhong Luo
DOI:10.1016/j.cclet.2017.01.014
日期:2017.5
ketones by using chiral primary amines as the catalysts. A simple chiral primary-tertiary diamine catalyst derived from l-phenylalanine was found to readily promote this aza-Michael addition reaction with enamine protonation as the key stereogenic step, thus enabling the effective synthesis of α -chiral β -azido ketones with good yields and moderate enantioselectivities.
A new transition-metal-free reductive deoxygenative olefination of phosphorus ylides with CO2, an abundant and sustainable C1 chemical feedstock, is described. This catalytic CO2 fixation afforded β-unsubstituted acrylates and vinyl ketones in good yields with broad scope and good functional group tolerance under mild reaction conditions. Cost-effective and easily handled polymethylhydrosiloxane was