87673-00-5Relevant academic research and scientific papers
Regioselective formation of novel functionalized 1-aza-9-oxafluorenes
Hilgeroth, Andreas,Brachwitz, Kristin,Baumeister, Ute
, p. 661 - 669 (2001)
A small series of novel 1-aza-9-oxafluorenes have been prepared by regioselective cycloaddition reaction of p-benzoquinone to the sterically unhindered side of unsymmetrically substituted N-acyl-1,4-dihydropyridines (1). The stereochemistry of the product
Evaluation of the first cytostatically active 1-aza-9-oxafluorenes as novel selective CDK1 inhibitors with P-glycoprotein modulating properties
Brachwitz, Kristin,Voigt, Burkhardt,Meijer, Laurent,Lozach, Olivier,Sch?chtele, Christoph,Molnár, Josef,Hilgeroth, Andreas
, p. 876 - 879 (2007/10/03)
The first series of synthetic 1-aza-9-oxafluorenes with cytostatic activities in the micromolar range was evaluated as cyclin-dependent kinase (CDK1) inhibitors. Activity was found to be selective in comparison to the inhibition of other kinases within th
Regioselective Addition ofd Copper-Zinc Aryl Organometallic Reagents to 3-substituted Pyridinium Salts
Shiao, Min-Jen,Chia, Win-Long,Shing, Tai-Li,Chow, Tahsin J.
, p. 2101 - 2121 (2007/10/02)
A number of 3-substituted pyridinium salts are subjected to nucleophilic addition by copper-zinc aryl organometallic reagents.The adducts are oxidized subsequently to form the corresponding 4-arylpyridines.In all the cases 1,4-addition products are obtained predominantly.The regioselectivity can be rationalized according to the hard-soft acid-base principle.Calculations on both charge distributions and FMO coefficients indicate that these reactions may be classified on the basis of the type of soft acid-soft base reactions.The observed γ-attack complies very well with the orientation of the FMO coefficients as estimated by a semiempirical method.
SYNTHESIS OF 4-SUBSTITUTED 3-PYRIDYL KETONES
Comins, Daniel L.,Stroud, Eric D.
, p. 3199 - 3201 (2007/10/02)
In the presence of a catalytic amount of cuprous iodide, the addition of Grignard reagents to the 1-phenoxycarbonyl salts of 3-acylpyridines gives 3-acyl-4-alkyl-1-phenoxycarbonyl-1,4-dihydropyridines.The crude dihydropyridines were aromatized with hot su
SYNTHESIS OF 3-ACYLPYRIDINES UTILIZING A FRIEDEL-CRAFTS REACTION
Comins, Daniel L.,Mantlo, Nathan B.
, p. 3683 - 3686 (2007/10/02)
A synthesis of 3-acylpyridines via a Friedel-Crafts acylation of a dihydropyridine intermediate is described.
