The influence of ionic liquids on the Knoevenagel condensation of 1H-pyrrole-2-carbaldehyde with phenyl acetonitriles – cytotoxic 3-substituted-(1H-pyrrol-2-yl)acrylonitriles
A flow chemistry route to 2-phenyl-3-(1H-pyrrol-2-yl)propan-1-amines
作者:Mark Tarleton、Adam McCluskey
DOI:10.1016/j.tetlet.2011.01.096
日期:2011.4
with a range of substituted benzyl nitriles (2a–e) afforded rapid access to a family of α,β-unsaturated nitriles (3a–e) in good yields (67–78%). Flow hydrogenation (ThalesNano H-cube™) at 60 °C, 50 bar H2 pressure, 1.0 mL/min through a 10% Pd-C catalyst selectively, and quantitatively, hydrogenated the olefin double bond (4a–e). Use of a RaneyNickel catalyst at 70 °C, 70 bar H2 pressure and flow rates
吡咯-2-甲醛(1)与一系列取代的苄腈(2a - e)的Knoevenagel缩合反应可快速获得高收率(67-78%)的α,β-不饱和腈(3a - e)系列。 )。在60°C,50 bar H 2压力,1.0 mL / min的条件下,通过10%Pd-C催化剂进行选择性流动氢化(ThalesNano H-cube™),并定量地氢化烯烃双键(4a – e)。在70°C,70 bar H 2的条件下使用阮内镍催化剂压力和0.5-1.0 mL / min的流速可定量转化为相应的饱和胺,同时减少了烯烃和腈键(5a - e)。这种方法的多功能性进一步通过5a和5c与降冰素原反应制得,以提供酰胺酰胺降冰素原类似物7和8作为新型蛋白质磷酸酶1和2A抑制剂来举例说明。
The influence of ionic liquids on the Knoevenagel condensation of 1H-pyrrole-2-carbaldehyde with phenyl acetonitriles – cytotoxic 3-substituted-(1H-pyrrol-2-yl)acrylonitriles
作者:Ahmed Al Otaibi、Christopher P. Gordon、Jayne Gilbert、Jennette A. Sakoff、Adam McCluskey
DOI:10.1039/c3ra47418f
日期:——
The Knoevenagel condensation of a series of substituted phenyl acetonitriles with 1H-pyrrole-2-carbaldehyde was examined in seven 1-butyl-3-methylimidazolium based ionic liquids and three protic ionic liquids. Of these [BMIM][Br] and [BMIM][OH], with catalytic piperidine, proved most efficient affording 3-substituted-(1H-pyrrol-2-yl)acrylonitriles 3â17 in good to excellent yields (98%) whilst utilisation of the protic ionic liquid propyl ammonium nitrate resulted in reduced yields (0â66%). Screening of the 3-substituted-(1H-pyrrol-2-yl)acrylonitriles analogues 3â17 against a panel of 11 cancer cell lines and one normal cell line allowed the identification of a series of compounds with broad spectrum cytotoxicity, but more interestingly a significant degree of MCF-7 breast cancer cell line specificity was evident with 6 (7 to >25 fold) and 13 (5.7 to >80 fold). Other analogues show high level of efficacy against specific cell lines with 10 showing excellent activity against MCF-7 (GI50 = 1.7 μM) and A431 (GI50 = 2.8 μM) cell lines. The most promising of the compounds identified herein were the 4-CF3 substituted 10 and the 3,4-dichloro substituted 13 with excellent activities against MCF-7 and A431 cell lines. The 3,4-dichloro-13 was a 0.56 μM potent inhibitor of MCF-7 cell growth.
Discovery of (Z)-2-phenyl-3-(1H-pyrrol-2-yl)acrylonitrile derivatives active against Haemonchus contortus and Ctenocephalides felis (cat flea)
作者:Abdelselam Ali、Marianne Bliese、Jo-Anne M. Rasmussen、Roger M. Sargent、Simon Saubern、David G. Sawutz、John S. Wilkie、David A. Winkler、Kevin N. Winzenberg、Ruth C.J. Woodgate
DOI:10.1016/j.bmcl.2006.11.043
日期:2007.2
A series of 2-phenyl-3-(1H-pyrrol-2-yl)acrylonitrile derivatives were synthesized and evaluated for in vitro activity against the endoparasite Haemonchus contortus and the ectoparasite Ctenocephalidesfells. Some compounds had significant in vitro activity against these parasites. (c) 2006 Elsevier Ltd. All rights reserved.
Discovery of acrylonitrile-based small molecules active against Haemonchus contortus
作者:Christopher P. Gordon、Lacey Hizartzidis、Mark Tarleton、Jennette A. Sakoff、Jayne Gilbert、Bronwyn E. Campbell、Robin B. Gasser、Adam McCluskey
DOI:10.1039/c3md00255a
日期:——
99–100% lethality in H. contortus. Of the 22 acrylonitrile analogues investigated, the most active were 2-cyano-3-[1-(3-dimethylaminopropyl)-2-methyl-1H-indol-3-yl]-N-hexylacrylamide (13a), 2-cyano-3-[1(2-dimethylaminoethyl)-2-methyl-1H-indol-3-yl]-N-hexylacrylamide (13b), 2-cyano-3-4-[3-(dimethylamino)propoxy]phenyl}-N-octylacrylamide (21), and 2-cyano-3-1-[3-(dimethylamino)propyl]-1H-pyrrol-2-yl}-N-octylacrylamide