Palladium-Catalyzed Asymmetric Hydrogenation of Functionalized Ketones
作者:You-Qing Wang、Sheng-Mei Lu、Yong-Gui Zhou
DOI:10.1021/ol051007u
日期:2005.7.1
[reaction: see text]. A novel catalytic system for asymmetrichydrogenation of functionalized ketones has been developed using a Pd/bisphosphine complex as the catalyst in 2,2,2-trifluoroethanol. The reaction exhibits high enantioselectivity, and up to 92.2% ee was obtained.
Asymmetric hydrogenation of alpha-amino carbonyl compounds
申请人:Zhang Xumu
公开号:US20050159604A1
公开(公告)日:2005-07-21
A process for preparing a non-racemic aminoalcohol is provided. The process includes the step of contacting a chiral alpha-amino carbonyl compound and hydrogen, in the presence of a non-racemic hydrogenation catalyst, at a temperature, pressure and for a length of time sufficient to produce the non-racemic aminoalcohol. In a preferred embodiment, the process can be described by the reaction scheme:
where R is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl or hetereoaryl group; and E can be hydrogen, COOR, CONHR, CONR
2
, COOH, COR, CN, NO
2
, alkyl, substituted alkyl, aryl, substituted aryl or hetereoaryl group.
The invention provides a compound having a selective inhibitory activity against highly-expressed LAT-1 in tumor cell. The compound is represented by the formula (I):
wherein each symbol is as defined in the specification, or a salt thereof, and a LAT-1 inhibitor comprising the same.
Highly enantioselective asymmetric transfer hydrogenation (ATH) of α-phthalimide ketones
作者:Zhou Xu、Yong Li、Jing Liu、Nan Wu、Ke Li、Songlei Zhu、Rongli Zhang、Yi Liu
DOI:10.1039/c5ob00568j
日期:——
A mild catalyst system for the synthesis of chiral amino alcohols via asymmetric transfer hydrogenation (ATH) of α-phthalimide ketones has been developed by using a chiral Ru-TsDPEN complex as the catalyst in DMF/MeOH at 40 °C. The reaction exhibits high reaction activity and excellent enantioselectivity where up to 96% yield and 99% ee of the product were obtained.