Carbazole N-substituent effect upon DTMA: stabilizing and photochromic modulating
摘要:
Dithienylmaleimide derivatives 7-27 were synthesized by introducing N-substituted carbazole for photo-stabilizing purpose, and the structures were fully confirmed. The photochromism and photo-stability were recorded via UV-vis spectra. Only ortho compounds 8-17 with N-substituents on carbazole moiety showed escalated photochromic change, while compound 7 and the para counterparts 18-27 showed no appreciable photochromism. Additionally, compounds 8-18 exhibited good photo-stability except 17 under 254 nm irradiation. The unstability of 17 may probably due to overrunning hindrance. These photochromic patterns indicated that hindrance and electronic effect mutually paid a decisive influence on the photochromism and photo-stability, which potentially exploited a new way to construct novel photochromic materials with regulable and conceivable performance. (c) 2013 Elsevier Ltd. All rights reserved.
Discovery and Optimization of a Series of Carbazole Ureas as NPY5 Antagonists for the Treatment of Obesity
作者:Michael H. Block、Scott Boyer、Wayne Brailsford、David R. Brittain、Debra Carroll、Steve Chapman、David S. Clarke、Craig S. Donald、Kevin M. Foote、Linda Godfrey、Anthony Ladner、Peter R. Marsham、David J. Masters、Christine D. Mee、Michael R. O'Donovan、J. Elizabeth Pease、Adrian G. Pickup、John W. Rayner、Andrew Roberts、Paul Schofield、Abid Suleman、Andrew V. Turnbull
DOI:10.1021/jm011125x
日期:2002.8.1
in this series to have the potential to be drugs, we believed that both the compound itself and the component aniline must be free of mutagenic activity. Parallel structure-activity relationship studies looking at the effects of ring substitution have proved that it is possible by incorporation of a 4-methyl substituent to produce carbazole ureas with potent Y5 activity, comprised of carbazole anilines
Disclosed is a method for producing an aminocarbazole by catalytically reducing a nitrocarbazole, wherein as a catalyst is used an active nickel-based catalyst prepared by contacting a nickel-based catalyst with an alkali and an iron compound under a hydrogen gas or inert gas atmosphere in an inert solvent, and according to the method of the present inventions decrease in reaction speed, decrease in yield of a product or the like depending upon the lot of the starting nitrocarbazoles can be prevented, and aminocarbazoles can be produced in a good yield constantly.
Disclosed is a method for producing an aminocarbazole by catalytically reducing a nitrocarbazole, wherein as a catalyst is used an active nickel-based catalyst prepared by contacting a nickel-based catalyst with an alkali and an iron compound under a hydrogen gas or inert gas atmosphere in an inert solvent, and according to the method of the present invention, decrease in reaction speed, decrease in yield of a product or the like depending upon the lot of the starting nitrocarbazoles can be prevented, and aminocarbazoles can be produced in a good yield constantly.
Antiviral polymers comprising acid functional groups and hydrophobic groups
申请人:GelTex Pharmaceuticals, Inc.
公开号:US20020015946A1
公开(公告)日:2002-02-07
The present invention relates to a method of treating a viral infection in an animal, such as a human, by administering to the animal a therapeutically effective amount of a polymer comprising a plurality of pendant hydrophobic groups and a plurality of pendant acid functional groups. The acid functional groups are connected directly to the polymer backbone or via an aliphatic spacer group of 1 to about 20 atoms in length.
Basische Dioxazinverbindungen, Verfahren zu deren Herstellung und deren Verwendung zum Färben und Bedrucken von Textilmaterial, Papier und Leder, und damit gefärbte und bedruckte Materialien
申请人:CIBA-GEIGY AG
公开号:EP0014678A1
公开(公告)日:1980-08-20
Beschrieben werden neue basische, gegebenenfalls quaternisierte Dioxazinverbindungen der Formel I
worin bedeutet: X, und X2 unabhängig voneinander eine unverzweigte oder verzweigte Alkylgruppe mit 1 bis 4 Kohlenstoffatomen, eine gegebenenfalls substituierte Phenyl- gruppe, Halogen, Wasserstoff, Cyan eine gegebenenfalls im Phenylrest substituierte Phenylaminogruppe, die CONH2-Gruppe, die CONH-phenyl-gruppe welche im Phenylrest substituiert sein kann oder eine COO-Alkyl (C1-C4)-Gruppe; Z eine gegebenenfalls quaternisierte basische Gruppe; Y eine anionische Gruppe; B unabhängig voneinander ein ankondensiertes Ringsystem mit 2 bis 4 carbocyclischen und/oder heterocyclischen Ringen welches ausser den Substituenten Z und Y gegebenenfalls noch weiter substituiert sein kann; n denZahlenbereich von 1 bis4 und m denZahlenbereich von 0 bis 2 mit derBedingung, dass m nicht grösser als n ist; Verfahren zur deren Herstellung sowie deren Verwendung als Farbstoffe zum salzfreien Färben und Bedrucken von vor allem Cellulosematerialien.
式 I 的新型碱性、任选季铵化二噁嗪化合物
其中X和X2各自独立地是具有1至4个碳原子的未支链或支链烷基、任选取代的苯基、卤素、氢、氰基、任选取代苯基的苯基氨基、CONH2基团、苯基基团中可能被取代的CONH-苯基或COO-烷基(C1-C4);Z是任选季铵化碱性基团;Y是阴离子基团;B 相互独立地为具有 2 至 4 个碳环和(或)杂环的熔合环系统,除取代基 Z 和 Y 外,这些环可任选被进一步取代;n 为 1 至 4 的数字范围,m 为 0 至 2 的数字范围,但 m 不大于 n;其制备工艺及其用作染料的用途,特别是用于纤维素材料的无盐染色和印花。