Synthesis and antiplasmodial activity of some 1-azabenzanthrone derivatives
摘要:
Some synthetic 1-azabenzanthrones (7H-dibenzo[de,h]quinolin-7-ones) are weakly to moderately cytotoxic, suggesting that they might also show antiparasitic activity. We have now tested a small collection of these compounds in vitro against a chloroquine-resistant Plasmodium falciparum strain, comparing their cytotoxicity against normal human fibroblasts. Our results indicate that 5-methoxy-1-azabenzanthrone and its 2,3-dihydro analogue have low micromolar antiplasmodial activities and showed more than 10-fold selectivity against the parasite, indicating that the dihydro compound, in particular, might serve as a lead compound for further development. (C) 2012 Elsevier Ltd. All rights reserved.
A convenient and general asymmetric transferhydrogenation of a wide array of 1-aryl-3,4-dihydroisoquinoline derivatives using a [RuIICl(η6-benzene)TsDPEN] complex in combination with a 5:2 HCOOH–Et3N azeotropic mixture as a hydrogen source was developed. Under mild reaction conditions, the described catalytic transformation secured a practical synthetic access to the corresponding valuable chiral
The preparation of eleven novel 6,7-dimethoxy-1-[(ortho, and para-R)-phenyl]-3,4-dihydroisoquinolines with possible pharmacological activity is described. The structure of all products was corroborated by ir, 1H-nmr, 13C-nmr, and ms.
A compound of general formula (I). A process for preparing this compound. A fungicidal composition comprising a compound of general formula (I). A method for treating plants by applying a compound of general formula (I) or a composition comprising it.
A compound of general formula (I):
A process for preparing this compound.
A fungicidal composition comprising a compound of general formula (I).
A method for treating plants by applying a compound of general formula (I) or a composition comprising it.
The reaction between 1-aryl-3,4-dihydroisoquinolines and monocyclic anhydrides was studied for the first time. The method is the first one-step route to previously unknown angularly-aryl substituted racemic [1,4]thiazino[3,4-a]isoquinoline derivatives with trans configuration. It was found that electron-withdrawing substituents in the p-position of the aryl group in the starting 3,4-dihydroisoquinoline
首次研究了1-芳基-3,4-二氢异喹啉与单环酸酐的反应。该方法是获得以前未知的具有反式构型的角芳基取代外消旋 [1,4] 噻嗪并 [3,4-a] 异喹啉衍生物的第一个单步路线。研究发现,起始 3,4-二氢异喹啉中芳基对位的吸电子取代基导致更高的产率和更短的反应时间,这与之前对高邻苯二甲酸酐和类似无环 N 反应的观察结果相反-芳基甲胺。