δ-Carbolines and their ring-opened analogs: Synthesis and evaluation against fungal and bacterial opportunistic pathogens
摘要:
Previous studies have indicated that the delta-carboline (2) ring system derived from the natural product cryptolepine (1) may represent a pharmacophore for anti-infective activity. This paper describes the design and synthesis of a small library of substituted delta-carbolines and the evaluation of the anti-fungal and anti-bacterial activities. An evaluation of the anti-bacterial activity of a previously reported library of ring-opened analogs was also conducted to provide an opportunity to test the hypothesis that both group of compounds may have the same biological target. Results indicate that against a selected group of fungal pathogens, substituted delta-carbolinium analogs displayed higher potency and several fold lower cytotoxicity than cryptolepine the parent natural product. Both the delta-carbolinium compounds and their ring-opened analogs, exhibited equally high anti-bacterial activity against the selected pathogens and especially against the gram positive bacteria evaluated. Published by Elsevier Masson SAS.
MATERIAL FOR ORGANIC ELECTROLUMINESCENCE DEVICE AND ORGANIC ELECTROLUMINESCENCE DEVICE UTILIZING THE SAME
申请人:Iwakuma Toshihiro
公开号:US20090017330A1
公开(公告)日:2009-01-15
A material for organic electroluminescence devices of the invention which is for use in combination with at least one phosphorescent metal complex has a specific heterocyclic structure. The material for organic electroluminescence devices is used as a host material or a hole transporting material. An organic electroluminescence device having an anode, a cathode and an organic thin film layer having one or more layers which is interposed between the anode and cathode, in which at least one layer of the organic thin film layer contains the material for organic electroluminescence devices, has a high emitting efficiency, causes little pixel defects, is excellent in heat resistance, and shows a long lifetime.
BISCARBAZOLE DERIVATIVE HOST MATERIALS AND RED EMITTER FOR OLED EMISSIVE REGION
申请人:Yamamoto Hitoshi
公开号:US20150194622A1
公开(公告)日:2015-07-09
The organic electroluminescence device utilizes a novel combination of a biscarbazole derivative compound as a phospherescent host materials and an orgaphosphorescent material as a red phosphorescent dopant material in the light emitting region of the device, where the biscarbazole derivative compound is represented by a formula (1); wherein the red phosphorescent dopant material is a phosphorescent organometallic complex having a substituted chemical structure represented by one of the partial chemical structures represented by a formulas (D1), (D2) and (D3).
The present application relates to a compound of a formula (I) which comprises a benzene group that is substituted with a group selected from carbazole derivatives and bridged amines and with an electron attracting group, wherein the two groups are located in the ortho-position in relation to one another. The present application further relates to the use of the compound of the formula (I) in an electronic device, and to a method of producing the compound of the formula (I).
Biscarbazole derivative, material for organic electroluminescence device and organic electroluminescence device using the same
申请人:Idemitsu Kosan Co., Ltd.
公开号:US10193077B2
公开(公告)日:2019-01-29
A biscarbazole derivative of the invention is represented by a formula (1) below.
In the formula (1): A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3.
The present application relates to a compound of a formula (I) which comprises a benzene group that is substituted with a group selected from carbazole derivatives and bridged amines and with an electron attracting group, wherein the two groups are located in the ortho-position in relation to one another. The present application further relates to the use of the compound of the formula (I) in an electronic device, and to a method of producing the compound of the formula (I).