Liquid-Crystalline Polyethers Based on Conformational Isomerism Part 22: Hexagonal Columnar Mesophase in Polyethers and Copolyethers Based on 1,4-Bis[2-(4-Hydroxyphenyl)Ethyl]Benzene, 1,2-Bis(4-Hydroxyphenyl)Ethane and 1,9-Dibromononane
نویسندگان
چکیده
منابع مشابه
Short Communication Mechanism of Induction of Cytochrome P450 Enzymes by the Proestrogenic Endocrine Disruptor Pesticide-Methoxychlor: Interactions of Methoxychlor Metabolites with the Constitutive Androstane Receptor System
Methoxychlor, a structural analog of the DDT pesticide, was previously shown to induce rat hepatic CYP2B and -3A mRNAs and the corresponding proteins [J Biochem Mol Toxicol 1998;12:315– 323], Additionally, methoxychlor was found to activate the constitutive androstane receptor (CAR) system and induce CYP2B6 (J Biol Chem 1999;274:6043–6046), suggesting a mechanism for methoxychlor-mediated cytoc...
متن کاملNovel pathway for bacterial metabolism of bisphenol A. Rearrangements and stilbene cleavage in bisphenol A metabolism.
Bisphenol A (BPA) is metabolized by a Gram-negative aerobic bacterium via a novel pathway involving oxidative skeletal rearrangement of the BPA. Oxidation of the aliphatic methyl group of BPA leads to coproduction of the methyl-hyroxylated 2,2-bis(4-hydroxyphenyl)-1-propanol and a skeletally rearranged triol 1,2-bis(4-hydroxyphenyl)-2-propanol. The major route of metabolism (> 80%) is through t...
متن کاملFunctional Aromatic Poly(1,3,4-Oxadiazole-Ether)s with Benzimidazole Pendants: Synthesis, Thermal and Dielectric Studies
Poly(1,3,4-oxadiazole-ether) with reactive carboxylic acid pendants was synthesized from solution polymerization via nucleophilic displacement polycondensation among 2,5-bis(4-fluorophenyl)-1,3,4-oxadiazole (BFPOx) and 4,4'-bis(4-hydroxyphenyl) valeric acid (BHPA). Without altering the polymeric segments, benzimidazole modified poly(1,3,4-oxadiazole-ether)s were prepared by varying stoichiometr...
متن کاملAlkali and Alkaline Earth Perchlorate and Picrate Complexes with Some Macrocyclic Polyethers
Crystalline complexes of some alkali and alkaline earth Perchlorates and picrates with macrocyclic polyethers have been synthesized. With the alkyl substituted aromatic macrocyclic polyethers bis(3,5-di-£er£-butylbenzo)-18-crown-6 and bis(4-hexadecylbenzo)-18crown-6 it was not possible to isolate all the complexes in the crystalline form. In fact the steric hindrance, caused by the alkyl substi...
متن کاملMechanism of induction of cytochrome p450 enzymes by the proestrogenic endocrine disruptor pesticide-methoxychlor: interactions of methoxychlor metabolites with the constitutive androstane receptor system.
Methoxychlor, a structural analog of the DDT pesticide, was previously shown to induce rat hepatic CYP2B and -3A mRNAs and the corresponding proteins [J Biochem Mol Toxicol 1998;12:315-323], Additionally, methoxychlor was found to activate the constitutive androstane receptor (CAR) system and induce CYP2B6 (J Biol Chem 1999;274:6043-6046), suggesting a mechanism for methoxychlor-mediated cytoch...
متن کامل