CATALYST FOR ASYMMETRIC HYDROGENATION AND METHOD FOR MANUFACTURING OPTICALLY ACTIVE CARBONYL COMPOUND USING THE SAME
申请人:YAMADA Shinya
公开号:US20120136176A1
公开(公告)日:2012-05-31
The present invention provides a catalyst used for manufacturing an optically active carbonyl compound by selective asymmetric hydrogenation of an α,β-unsaturated carbonyl compound, which is insoluble in a reaction mixture, and a method for manufacturing the corresponding optically active carbonyl compound. Particularly, the invention provides a catalyst for obtaining an optically active citronellal useful as a flavor or fragrance, by selective asymmetric hydrogenation of citral, geranial or neral. The invention relates to a catalyst for asymmetric hydrogenation of an α,β-unsaturated carbonyl compound, which comprises: a powder of at least one metal selected from metals belonging to Group 8 to Group 10 of the Periodic Table, or a metal-supported substance in which the at least one metal is supported on a support; an optically active peptide compound; and an acid, and also relates to a method for manufacturing an optically active carbonyl compound using the same.
Two‐in‐One Strategy for Palladium‐Catalyzed C−H Functionalization in Water
作者:Huiying Zeng、Zemin Wang、Chao‐Jun Li
DOI:10.1002/anie.201813391
日期:2019.2.25
Transition metal catalyzedC−Hfunctionalizations have been developed as powerful methods for C−C bond formations. Directing groups, removable directing groups, traceless directing groups, and transient directing groups (TDGs) have been successfully used to improve the reaction efficiencies. For the development of greener and more sustainable methods, C−Hfunctionalization using a TDG that also serves
Histone deacetylases inhibitors (HDACIs) represents effective treatments for cancer. In continuing our efforts to develop novel and potent HDACIs, a series of N-hydroxycinnamamide-based HDACIs with aromatic ring and various aliphatic linker have been successfully designed and synthesized. Biological evaluations established that compounds 4h, 4i, 4j, 4l, 4r showed superior inhibition on histone deacetylase and antiproliferative activity in some solid tumor cell lines [HeLa, SK-N-BE(2), PC-3] compared to the known inhibitor SAHA. Among these analogs, 4l exhibited selectivity to HDAC1.
OSIMA, IVAO;SUGA, SIGEHKI;ABEH, RUMIKO
作者:OSIMA, IVAO、SUGA, SIGEHKI、ABEH, RUMIKO
DOI:——
日期:——
3-Aryl-1,2-diacetamidopropane Derivatives as Novel and Potent NK-1 Receptor Antagonists
作者:Philip A. Hipskind、J. Jeffry Howbert、Robert F. Bruns、Steven S. Y. Cho、Thomas A. Crowell、Mark M. Foreman、Donald R. Gehlert、Smriti Iyengar、Kirk W. Johnson、Joseph H. Krushinski、Dominic L. Li、Karen L. Lobb、Norman R. Mason、Brian S. Muehl、James A. Nixon、Lee A. Phebus、Domenico Regoli、Rosa M. Simmons、Penny G. Threlkeld、Diane C. Waters、Bruce D. Gitter
DOI:10.1021/jm950616c
日期:1996.1.1
ester and amide NK-1antagonists 5-7 led to the discovery that the potency of the series could be markedly increased by moving the carbonyl function in these molecules to an off-chain position as in the 3-aryl-1,2-diacetamidopropane 9. Further medicinal chemistry incorporating this change resulted in the discovery of a novel series of highly potent aryl amino acid derived NK-1antagonists of the R stereoisomeric