Antiproliferative activity in HL60 cells by tetrasubstituted pyrroles: a structure–activity relationship study
摘要:
A number of tetrasubstituted pyrrole derivatives have been synthesized and evaluated for their in vitro antiproliferative activities using the human promyelocytic leukemia cell line HL60. Tetrasubstituted pyrroles are obtained by irradiation of a silica gel absorbed mixture of a conjugated alkynoate and a primary amine. Active compounds exhibited GI(50) values in the range 445 mu M, and only six products showed TGI values within the evaluation range. A structure-activity relationship is also discussed. (c) 2005 Elsevier Ltd. All rights reserved.
Dual Reactivity Pattern of Allenolates “On Water”: The Chemical Basis for Efficient Allenolate-Driven Organocatalytic Systems
作者:David González-Cruz、David Tejedor、Pedro de Armas、Fernando García-Tellado
DOI:10.1002/chem.200700227
日期:2007.6.4
A study of the reactivitypattern associated with zwitterionic allenolates "on water" is reported. This study establishes the chemicalbasis for two organocatalyzed allenolate-driven reaction networks operating "on water". The first one is a chemodifferentiating three building block (ABB') three-component reaction (ABB' 3CR) manifold comprising terminal alkynoates and aldehydes. The manifold produces
Efficient Domino Process Based on the Catalytic Generation of Non-Metalated, Conjugated Acetylides in the Presence of Aldehydes or Activated Ketones
作者:David Tejedor、Fernando García-Tellado、José Juan Marrero-Tellado、Pedro de Armas
DOI:10.1002/chem.200204579
日期:2003.7.7
acetylides are used to generate enol-protected functionalized propargylic alcohols 1, 1,3-dioxolane compounds 2, or 3,4,5-trisubstituted 4,5-dihydrofurans 4 through serial multibond-forming processes. The method calls for a nucleophile (a tertiary amine or phosphine) as a chemical activator, a conjugated terminal acetylene as the acetylide source, and an aldehyde or activated ketone as the electrophilic
Alkynoates as a Source of Reactive Alkylinides for Aldehyde Addition Reactions
作者:Pedro de Armas、Fernando García-Tellado、José J. Marrero-Tellado、David Tejedor、Miguel A. Maestro、Javier Gonzalez-Platas
DOI:10.1021/ol015951b
日期:2001.6.1
[GRAPHCIS]The reaction of activated alkynes with carbonyl compounds in the presence of a catalytic amount of a nucleophile leads to enol-protected functionalized propargyl alcohols and 1,3-dioxolane compounds by way of a mild carbon-carbon bond formation reaction.