Correlation between p<i>K</i><sub>a</sub> and Reactivity of Quinuclidine-Based Catalysts in the Baylis−Hillman Reaction: Discovery of Quinuclidine as Optimum Catalyst Leading to Substantial Enhancement of Scope
作者:Varinder K. Aggarwal、Ingo Emme、Sarah Y. Fulford
DOI:10.1021/jo026671s
日期:2003.2.1
powerful combination of quinuclidine with methanol was tested with a host of aldehydes and Michaelacceptors. Not only were the reactions more efficient and faster than previously reported, but now new substrates that were previously unreactive could be employed. Notable examples include the use of acetylenic aldehydes and the employment of vinyl sulfones, acrylamides, delta-lactones, and even alpha
Organocatalyzed Decarboxylative Trichloromethylation of Morita-Baylis-Hillman Adducts in Batch and Continuous Flow
作者:Martin V. Enevoldsen、Jacob Overgaard、Maja S. Pedersen、Anders T. Lindhardt
DOI:10.1002/chem.201704972
日期:2018.1.24
Two protocols for the organocatalyzed decarboxylative trichloromethylation of Morita–Baylis–Hillman (MBH) substrates have been developed. Applying sodium trichloroacetate, as the trichloromethylanion precursor, in combination with an organocatalyst and acetylated MBH‐alcohols, the desired trichloromethylated products were obtained in good yields at room temperature in batch. The method was next extrapolated
Alkylated piperazine compounds of Formula I are provided, including stereoisomers, tautomers, and pharmaceutically acceptable salts thereof, useful for inhibiting Btk kinase, and for treating immune disorders such as inflammation mediated by Btk kinase. Methods of using compounds of Formula I for in vitro, in situ, and in vivo diagnosis, and treatment of such disorders in mammalian cells, or associated pathological conditions, are disclosed.
[EN] NOVEL INDOLIZINE-2-CARBOXAMIDES ACTIVE AGAINST THE HEPATITIS B VIRUS (HBV)<br/>[FR] NOUVEAUX INDOLIZINE-2-CARBOXAMIDES ACTIFS CONTRE LE VIRUS DE L'HÉPATITE B (VHB)
申请人:AICURIS GMBH & CO KG
公开号:WO2020221824A1
公开(公告)日:2020-11-05
The present invention relates generally to novel antiviral agents. Specifically, the present invention relates to compounds which can inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV replication cycle, compositions comprising such compounds, methods for inhibiting HBV viral replication, methods for treating or preventing HBV infection, and processes and intermediates for making the compounds.
Titanium Isopropoxide as Efficient Catalyst for the Aza-Baylis−Hillman Reaction. Selective Formation of α-Methylene-β-amino Acid Derivatives
作者:Daniela Balan、Hans Adolfsson
DOI:10.1021/jo0163952
日期:2002.4.1
formation of alpha-methylene-beta-amino acid derivatives is achieved using the aza version of the Baylis-Hillman protocol. The products are readily formed in a three-component one-pot reaction between arylaldehydes, sulfonamides, and alpha,beta-unsaturated carbonyl compounds. The reaction is efficientlycatalyzed by titanium isopropoxide and 2-hydroxyquinuclidine in the presence of molecular sieves. The