Formation of 6,13-dimethyl-5,12-diazachrysene by oxidative coupling of 2-methylindole followed by base-induced ring-expansion
作者:J. Bergman、S. Bergman、J.-O. Lindström
DOI:10.1016/s0040-4039(98)00670-4
日期:1998.6
Oxidative coupling of 2-methylindole with FeCl3 gave, in addition to a trimeric coupling product, also the ring-expanded product 6,13-dimethyl-5,12-diazachrysene.
Oxindole was found to react readily with thionyl chloride to give (in an excellent yield) the isolable sulfine (13a), which on heating (refluxing acetonitrile) gave isoindigo (15a). The dark violet 3‐sulfinato‐oxindole (13a) readily reacted with 2,3‐dimethylbutadiene to give a colorless cyclo‐adduct (14a). The sulfine also reacted readily with various nucleophilic reagents, thus, thioloacetic acid
été exécuté des réctions comparatives sur différents indigoïdes (indigo, indirubine, divers iso-indigos, écarlate d'indigo et thioindigo), acylations, action de l'hydrazine, action de réducteurs, action de la diméthylaniline. Ces essais ont montré qu'il existait des différences de comportement suivant les colorants employés. On a pu, notamment, expliquer la réaction de l'indigo avec la diméthylaniline
Compositions comprising a combination of a substituted flavonoid and a substituted indole for treating ocular diseases
申请人:University of Macau
公开号:US11007177B2
公开(公告)日:2021-05-18
Disclosed are compositions and methods for treatment of a disease or disorder of the eye and adnexa of the eye, including dry eye disease and Sjögren's syndrome, by administering a composition comprising an indole and a flavonoid either as an admixture or as a synthetic heterodimer thereof.
Synthesis and evaluation of functionalized isoindigos as antiproliferative agents
作者:Xi Kai Wee、Wee Kiang Yeo、Bing Zhang、Vincent B.C. Tan、Kian Meng Lim、Tong Earn Tay、Mei-Lin Go
DOI:10.1016/j.bmc.2009.09.008
日期:2009.11
A series of functionalized isoindigos structurally related to meisoindigo (1-methylisoindigo), a therapeutic agent used for the treatment of a form of leukemia, were synthesized and evaluated for antiproliferative activities on a panel of human cancer cells. Two promising compounds (1-phenpropylisoindigo and 1-(p-methoxy-phenethyl)-isoindigo) that were more potent than meisoindigo and comparable to 6-bromoindirubin-3'-oxime on leukemic K562 and liver HuH7 cells were identified. Structure-activity relationships showed the importance of keeping one of the lactam NH in an unsubstituted state. Substitution of the other lactam NH with aryl or arylalkyl side chains retained or improved activity in most instances. An intact exocyclic double bond was also essential, possibly to maintain planarity and rigidity of the iso-indigo scaffold. None of the compounds were found to inhibit CDK2 in an in vitro assay, in spite of reports linking the antiproliferative activities of meisoindigo and other isoindigos to CDK2 inhibition. Hence, these functionalized isoindigos disrupted cell growth and proliferation by other mechanistic pathways that did not involve CDK2 inhibition. (C) 2009 Elsevier Ltd. All rights reserved.