Quinols As Novel Therapeutic Agents. 7. Synthesis of Antitumor 4-[1-(Arylsulfonyl-1<i>H</i>-indol-2-yl)]-4-hydroxycyclohexa-2,5-dien-1-ones by Sonogashira Reactions
作者:Andrew J. McCarroll、Tracey D. Bradshaw、Andrew D. Westwell、Charles S. Matthews、Malcolm F. G. Stevens
DOI:10.1021/jm061163m
日期:2007.4.1
arylsulfonyl chlorides affords sulfonamides that undergo Sonogashira couplings under thermal or microwave conditions with the alkyne 4-ethynyl-4-hydroxycyclohexa-2,5-dien-1-one followed by cyclization to 4-[1-(arylsulfonyl-1H-indol-2-yl)]-4-hydroxycyclo-hexa-2,5-dien-1-ones. This method allows for incorporation of a range of substituents into the arylsulfonyl moiety, and compounds showed selective in vitro
A wide range of palladiumcatalysed regio- and stereo-specific 5-, 6- and 7-exo-dig mono-, bis- and tris-cyclisation processes of aryl and vinyl halides and allylic acetates are described. The mono- and bis-cyclisation processes terminate in hydride capture from piperidineformic acid or sodium formate. Addition of Tl2CO3 results in alkyne-allene isomerisation and leads, after cyclisation, to 1,3-dienes
描述了广泛的钯催化的芳基和乙烯基卤化物和烯丙基乙酸酯的区域特异性和立体特异性的5-,6-和7-exo-dig单,双和三环化方法。单环和双环化过程终止于从哌啶甲酸或甲酸钠中捕获氢化物。Tl 2 CO 3的添加导致炔-丙二烯异构化,并且在环化之后导致1,3-二烯,这使Diels-Alder加合物具有良好的收率。
CCR2 INHIBITORS AND METHODS OF USE THEREOF
申请人:Basak Arindrajit
公开号:US20100234364A1
公开(公告)日:2010-09-16
Compounds are provided that act as potent antagonists of the CCR2 or CCR9 receptor. Animal testing demonstrates that these compounds are useful for treating inflammation, a hallmark disease for CCR2 and CCR9. The compounds are generally aryl sulfonamide derivatives and are useful in pharmaceutical compositions, methods for the treatment of CCR2-mediated diseases, CCR9-mediated diseases, as controls in assays for the identification of CCR2 antagonists, and as controls in assays for the identification of CCR9 antagonists.
Palladium Catalysed Tandem Cyclisation–Anion Capture. Part 6: Synthesis of Sugar, Nucleoside, Purine, Benzodiazepinone and β-lactam Analogues via Capture of in situ Generated Vinylstannanes
作者:Adele Casaschi、Ronald Grigg、José M. Sansano
DOI:10.1016/s0040-4020(00)00661-x
日期:2000.9
The regioselective palladiumcatalysed hydrostannylation of alkynes bearing a β-heteroatom affords mainly α-vinyltin(IV) compounds that are used as terminating species in palladiumcatalysed cyclisation–anion capture processes. The pharmacophore attached to the alkyne moiety permits the synthesis of sugars, nucleosides, purines, benzodiazepinones and β-lactams analogues in good yields.
Development of Highly Chemoselective Bulky Zincate Complex,<i>t</i>Bu<sub>4</sub>ZnLi<sub>2</sub>: Design, Structure, and Practical Applications in Small-/Macromolecular Synthesis
We present full details of the unique reactivities of the newly developed dianion-type bulky zincate, dilithium tetra-tert-butylzincate (tBu(4)ZnLi(2)). With this reagent, halogen-zinc exchange reaction of variously functionalized haloaromatics and anionic polymerization of N-isopropylacrylamide (NIPAm)/styrene with excellent chemoselectivity were realized. Halogen-zinc exchange reaction followed by