One Pot Synthesis of Furyl α-Bromoketones from Furyl Ketones Using the A-162 Br3-Resin/CH3NO2 System
摘要:
Furyl ketones are brominated in a single - step reaction using the A-162 Br3/CH3NO2 system Furyl alpha-bromoketones are obtained with good yield and high selectivity .
1,2,3-thiadiazole compounds, compositions and method of anti-thrombotic
申请人:The Upjohn Company
公开号:US05098918A1
公开(公告)日:1992-03-24
Novel 1,2,3-thiadiazole compounds, new and old 1,2,3-thiadiazole compositions and method of anti-thrombotic treatment are systemically administered to a human or animal.
Iridium‐Catalyzed Asymmetric Hydrogenation of
<i>N</i>
‐Alkyl α‐Aryl Furan‐Containing Imines: an Efficient Route to Unnatural
<i>N</i>
‐Alkyl Arylalanines and Related Derivatives.
作者:Javier Mazuela、Thomas Antonsson、Laurent Knerr、Stephen P. Marsden、Rachel H. Munday、Magnus J. Johansson
DOI:10.1002/adsc.201801143
日期:2019.2
High throughput experimentation (HTE) has enabled the rapid identification of ligand/precatalyst combinations that facilitate highly enantioselective hydrogenations of prochiral N‐alkyl α‐aryl ketimines containing a furyl moiety. The chiral amines obtained have proven to be modular precursors in the synthesis of unnatural mono N‐alkylated arylalanines and related derivatives.
A spiro-bis-γ-lactone glucoside from viburnum dilatatum
作者:Tetsuo Iwagawa、Tsunao Hase
DOI:10.1016/s0031-9422(00)80539-7
日期:1984.1
Abstract A new spiro-bis-γ-lactone glucoside was isolated from the leaves of Viburnum dilatatum and its structure was elucidated on the basis of spectral and chemical evidence.
Synthesis and platelet aggregation inhibitory activity of 4,5-bis(substituted)-1,2,3-thiadiazoles
作者:Edward W. Thomas、Edward E. Nishizawa、David C. Zimmermann、Davey J. Williams
DOI:10.1021/jm00382a009
日期:1985.4
Routine screening of compounds for inhibition of collagen-induced platelet aggregation in vitro revealed 4,5-bis-(4-methoxyphenyl)-1,2,3-thiadiazole (2) was active and it represents the first example of a 1,2,3-thiadiazole with possible antithrombotic activity. In order to develop a structure-activity relationship for this heterocycle, a number of new 4(5)-mono- and -disubstituted 1,2,3-thiadiazoles were synthesized. These were tested in our screen and a number of additional active compounds were found. The most active compounds (2, 5a, 5b, and 6c) were those in which the heterocycle was substituted with benzene rings possessing para electron-donating groups.
THOMAS, E. W.;NISHIZAWA, E. E.;ZIMMERMANN, D. C.;WILLIAMS, D. J., J. MED. CHEM., 1985, 28, N 4, 442-446
作者:THOMAS, E. W.、NISHIZAWA, E. E.、ZIMMERMANN, D. C.、WILLIAMS, D. J.