Evaluation of Silica-H2SO4 as an Efficient Heterogeneous Catalyst for the Synthesis of Chalcones
作者:Aeysha Sultan、Abdul Raza、Muhammad Abbas、Khalid Khan、Muhammad Tahir、Nazamid Saari
DOI:10.3390/molecules180810081
日期:——
We report an efficient silica-H2SO4 mediated synthesis of a variety of chalcones that afforded the targeted compounds in very good yield compared to base catalyzed solvent free conditions as well as acid or base catalyzed refluxing conditions.
Synthesis, topoisomerase I and II inhibitory activity, cytotoxicity, and structure–activity relationship study of 2-phenyl- or hydroxylated 2-phenyl-4-aryl-5H-indeno[1,2-b]pyridines
作者:Tara Man Kadayat、Chanju Song、Somin Shin、Til Bahadur Thapa Magar、Ganesh Bist、Aarajana Shrestha、Pritam Thapa、Younghwa Na、Youngjoo Kwon、Eung-Seok Lee
DOI:10.1016/j.bmc.2015.04.031
日期:2015.7
topoisomerase I and II inhibitory activity compared to positive control, camptothecin and etoposide, respectively, in low micromolar range. Structure–activity relationship study revealed that indenopyridine compounds with hydroxyl group at 2-phenyl ring in combination with furyl or thienyl moiety at 4-position are important for topoisomeraseinhibition. Compounds (22–25) which contain hydroxyl group at
Design and synthesis of novel 2,4-diaryl-5H-indeno[1,2-b]pyridine derivatives, and their evaluation of topoisomerase inhibitory activity and cytotoxicity
作者:Tara Man Kadayat、Chanmi Park、Kyu-Yeon Jun、Til Bahadur Thapa Magar、Ganesh Bist、Han Young Yoo、Youngjoo Kwon、Eung-Seok Lee
DOI:10.1016/j.bmc.2014.11.010
日期:2015.1
topoisomerase II inhibitoryactivity. Compounds 7, 8, 11, 12, 13, and 22 with 2-furyl, 2-thienyl or 3-thienyl at 2-position of central pyridine showed the significant or moderate topoisomerase I inhibitoryactivity. Especially, compound 12 with strong topoisomerase II inhibitoryactivity at 100 μM and 20 μM, and moderate topoisomerase I inhibitoryactivity displayed strong cytotoxicity against several
为了开发潜在的抗癌药,我们设计和合成了30种新的2,4-二芳基-5 H-茚并[1,2- b ]吡啶衍生物,其在2-和-3处含有芳基部分,例如呋喃基,噻吩基,吡啶基和苯基。 5 H-茚并[1,2- b ]吡啶的4位。他们评估了拓扑异构酶I和II的抑制活性,以及对几种人类癌细胞系的细胞毒性。中制备的30种化合物,7,8,9,10,12,14,16,19,20,22,和23在中央吡啶的2-或4-位上的2-或3-呋喃基和/或2-或3-噻吩基具有明显或中等的拓扑异构酶II抑制活性。化合物7,8,11,12,13,和22与2-呋喃基,2-噻吩基或在中央吡啶2-位3-噻吩基显示显著或中度拓扑异构酶I抑制活性。尤其是,化合物12在100μM和20μM时具有强大的拓扑异构酶II抑制活性,而中等的拓扑异构酶I抑制活性则表现出对几种人类癌细胞系的强大细胞毒性。
A regio- and stereoselective 1,3-dipolar cycloaddition for the synthesis of novel spiro-pyrrolothiazolyloxindoles and their antitubercular evaluation
The 1,3-dipolar cycloaddition of azomethine ylides derived from substituted isatins and 1,3-thiazolane-4-carboxylic acid to a series of 2-(arylmethylene)-2,3-dihydro-1H-inden-1-ones afforded twenty nine novel spiro-pyrrolothiazolyloxindoles regio- and stereoselectively in moderate yields. These compounds were screened for their in vitro activity against Mycobacterium tuberculosis H37Rv (MTB) using
Rational design, synthesis and molecular modeling studies of novel anti-oncological alkaloids against melanoma
作者:Adel S. Girgis、Siva S. Panda、Aladdin M. Srour、Hanaa Farag、Nasser S. M. Ismail、Mohamed Elgendy、Amal K. Abdel-Aziz、Alan R. Katritzky
DOI:10.1039/c5ob00410a
日期:——
Anti-oncological active spiro-alkaloids were synthesized exhibiting promising antitumor properties against melanoma cell lines. Molecular modeling studies describe the observed properties.