CuH-Catalyzed Enantioselective Ketone Allylation with 1,3-Dienes: Scope, Mechanism, and Applications
作者:Chengxi Li、Richard Y. Liu、Luke T. Jesikiewicz、Yang Yang、Peng Liu、Stephen L. Buchwald
DOI:10.1021/jacs.9b01784
日期:2019.3.27
copper-catalyzed allylation of ketones using widely available 1,3-dienes as allylmetal surrogates. Homoallylic alcohols bearing a wide range of functional groups are obtained in high yield and with good regio-, diastereo-, and enantioselectivity. Mechanistic investigations using density functional theory (DFT) implicate the in situ formation of a rapidly equilibrating mixture of isomeric copper(I) allyl complexes
Evaluation of Cytotoxic Properties of N,N'-bis[(1-aryl-3-heteroaryl)propylidene]-hydrazine dihydrochlorides
作者:K. Kucukoglu、H. I. Gul、H. Sakagami
DOI:10.1007/s11094-020-02274-z
日期:2020.11
N,N'-bis[(1-aryl-3-heteroaryl)propylidene]hydrazine dihydrochlorides, P1, P4 – P8, and R1 – R7, were assayed against human oral squamous cell carcinoma (HSC-2, HSC-3, HSC-4), human promyelocytic leukemia cell line (HL-60), and human normal oral cells (HGF, HPC, and HPLF) as non-tumor cells to evaluate their cytotoxic properties. Peplomycin was used as a reference compound. It was found that P- and R-series hydrazone compounds exhibited cytotoxicity in a range of 11 ± 0.68 – 300 ± 1.0 ± M. Compound P1 which is a non-substituted hydrazone containing piperidine ring and compound R2 which is a 4-methyl hydrazone derivative containing pyrrolidine ring showed the most potent cytotoxic activity. These hydrazone compounds may serve as promising candidates for further studies.
The current invention provides an improved immunoassay for the detection and determination of pyrrolidinophenone based designer drugs in hair and biological fluids (urine, blood, and oral fluid). The generic immunoassay is underpinned by novel, sub-family-specific antibodies, which display surprising sensitivity. The invention further describes substrates comprising an antibody that is specific to compounds of the pyrrolidinophenone family. Also described are the novel immunogens from which the antibodies are derived and kits incorporating the antibodies of the current invention.
Intracellular kinase inhibitors and their therapeutic uses for patients with T cell malignancies, B cell malignancies, autoimmune disorders, and transplanted organs.
Analogues of Triprolidine: Structural Influences upon Antihistamine Activity
作者:A F Casy、C R Ganellin、A D Mercer、C Upton
DOI:10.1111/j.2042-7158.1992.tb03207.x
日期:2011.4.12
tests using a lethal dose of compound 48/80 (a potent histamine-releasing agent) demonstrated that triprolidine itself was the most active compound to protect the animal among all the isomeric compounds tested: in all isomeric pairs the E-configuration possessed superior activity over Z. The disposition of the aryl groups in these geometrically constrained compounds mimics that seen in the structurally