A Green N-Detosylation of Indoles and Related Heterocycles Using Phase Transfer Catalysis
摘要:
A practical method for the N-detosylation of indoles and related heterocycles with KOH in THF and water in the presence of a phase transfer catalyst is described. Using a nonalcoholic solvent, this method prevents the formation of toxic alkyl p-toluenesulfonate and consequently eliminates the formation of even traces of N-alkyl byproduct. This green method is particularly useful for indoles bearing electron-withdrawing groups and for azaindoles.
Design, synthesis, and biological evaluation of hydantoin bridged analogues of combretastatin A-4 as potential anticancer agents
作者:Mao Zhang、Yu-Ru Liang、Huan Li、Ming-Ming Liu、Yang Wang
DOI:10.1016/j.bmc.2017.10.045
日期:2017.12
hydantoin-bridged analogues of combretastatin A-4 (CA-4) were designed, synthesized and evaluated for antiproliferative activities in vitro and in vivo. The most potent compound 8d, showed potent cytotoxicity against four human cancer cell lines with IC50 values of 0.186–0.279 μM, and possessed the efficacy of inhibitingtubulinpolymerization, disrupting in vitro vascularization, blocking cell cycle in G2/M phase
Synthesis and Quantitative Structure–Activity Relationship (QSAR) Study of Novel <i>N</i>-Arylsulfonyl-3-acylindole Arylcarbonyl Hydrazone Derivatives as Nematicidal Agents
natural-product-based pesticidal agents, 54 novel N-arylsulfonyl-3-acylindole arylcarbonyl hydrazonederivatives were prepared, and their structures were well characterized by 1H NMR, 13C NMR, HRMS, ESI-MS, and mp. Their nematicidal activity was evaluated against that of the pine wood nematode, Bursaphelenchus xylophilus in vivo. Among all of the derivatives, especially V-12 and V-39 displayed the best
在我们旨在发现和开发基于天然产物的杀虫剂的程序的继续中,制备了54种新颖的N-芳基磺酰基-3-酰基亚芳基芳基羰基hydr衍生物,并通过1 H NMR,13 C NMR对其结构进行了很好的表征, HRMS,ESI-MS和mp。在体内对它们的杀线虫活性针对松木线虫Bursaphelenchus xylophilus进行了评估。在所有衍生物中,尤其是V-12和V-39表现出最有希望的杀线虫活性,LC 50值分别为1.0969和1.2632 mg / L。这建议引入R 1和R 2为了进一步制备这些作为杀线虫剂的化合物,可以考虑将R 3作为吸电子取代基,R 3作为甲基,R 4作为苯基作为具有吸电子取代基的化合物。六个选定的描述符是WHIM描述符(E1m),两个GETAWAY描述符(R1m +和R3m +),负担特征值描述符(BEHm8)和两个边缘邻接索引描述符(EEig05x和EEig13d)。定量
Access to Biaryl Sulfonamides by Palladium-Catalyzed Intramolecular Oxidative Coupling and Subsequent Nucleophilic Ring Opening of Heterobiaryl Sultams with Amines
作者:Joydev K. Laha、Neetu Dayal、Krupal P. Jethava、Dilip V. Prajapati
DOI:10.1021/acs.orglett.5b00290
日期:2015.3.6
The installation of sulfonamide pharmacophores on heterobiaryls has successfully been executed by a previously unknown palladium-catalyzedintramolecularoxidative coupling in N-arylsulfonyl heterocycles followed by novel ring opening of heterobiaryl sultams with amine nucleophiles. The protocol has a wide scope of substrates warranting broad applications in the synthesis of heterobiaryls containing
Antifungal Agents. Part 3: Synthesis and Antifungal Activities of 3-Acylindole Analogs against Phytopathogenic Fungi In Vitro
作者:Hui Xu、Wen bin Yang、Qin Wang
DOI:10.1111/j.1747-0285.2011.01212.x
日期:2011.11
To find more potent antifungal compounds, twenty 3‐acylindole analogs were synthesized and bio‐evaluated for their antifungalactivities against seven phytopathogenic fungi. Structure–activity relationships investigations revealed that 4‐ or 6‐methyl and 3‐acetyl or propionyl groups were the important structural properties of 3‐acylindoles for the activities. Especially 4‐methyl‐3‐propionylindole,
of 7-pyrrolo[3,2-f]quinolinones was obtained by introducing benzoyl, sulfonyl and carbamoyl side chains at the 3-N position, and their cytotoxicity against a panel of leukemic and solid tumor cell lines was evaluated. Most of them showed high antiproliferative activity with GI50s ranging from micro-to sub-nanomolar values, and these values correlated well with the inhibitory activities of the compounds