19082-52-1Relevant articles and documents
Preparation method of Roxadustat intermediate
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Paragraph 0036; 0046-0049, (2019/06/12)
The invention discloses a preparation method of a Roxadustat intermediate (A). The method is characterized in that synthesis routes are defined in the description. The method is simple in process, economical and environmentally friendly, thionyl chloride
Amino propylene glycol derivatives, its preparation method and its pharmaceutical composition and use thereof
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Paragraph 0258; 0261; 0262; 0263, (2018/11/22)
The invention discloses a class of amino propanediol derivatives, a preparation method, drug compositions and uses thereof, and particularly relates to a class of new immunoloregulation agents represented by a general formula (I), a preparation method, drug compositions containing the immunoloregulation agents, and especially uses of the immunoloregulation agents as immunoloregulation drugs. The compound with characteristics of excellent treatment effect and low toxicity can be used in the fields of immunologic derangement and immunosuppression, and can further be used for treatment of hypoimmunity, organ transplant rejection and autoimmune diseases. The formula I is defined in the instruction.
Activity of Fluorine-Containing Analogues of WC-9 and Structurally Related Analogues against Two Intracellular Parasites: Trypanosoma cruzi and Toxoplasma gondii
Chao, María N.,Li, Catherine,Storey, Melissa,Falcone, Bruno N.,Szajnman, Sergio H.,Bonesi, Sergio M.,Docampo, Roberto,Moreno, Silvia N. J.,Rodriguez, Juan B.
, p. 2690 - 2702 (2016/12/23)
Two obligate intracellular parasites, Trypanosoma cruzi, the agent of Chagas disease, and Toxoplasma gondii, an agent of toxoplasmosis, upregulate the mevalonate pathway of their host cells upon infection, which suggests that this host pathway could be a potential drug target. In this work, a number of compounds structurally related to WC-9 (4-phenoxyphenoxyethyl thiocyanate), a known squalene synthase inhibitor, were designed, synthesized, and evaluated for their effect on T. cruzi and T. gondii growth in tissue culture cells. Two fluorine-containing derivatives, the 3-(3-fluorophenoxy)- and 3-(4-fluorophenoxy)phenoxyethyl thiocyanates, exhibited half-maximal effective concentration (EC50) values of 1.6 and 4.9 μm, respectively, against tachyzoites of T. gondii, whereas they showed similar potency to WC-9 against intracellular T. cruzi (EC50values of 5.4 and 5.7 μm, respectively). In addition, 2-[3- (phenoxy)phenoxyethylthio]ethyl-1,1-bisphosphonate, which is a hybrid inhibitor containing 3-phenoxyphenoxy and bisphosphonate groups, has activity against T. gondii proliferation at sub-micromolar levels (EC50=0.7 μm), which suggests a combined inhibitory effect of the two functional groups.
PROCESS FOR PRODUCING 4-HYDROXYDIPHENYL ETHER
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Page/Page column 6, (2008/06/13)
A method for producing 4-hydroxydiphenyl ether, characterized by reacting diphenyl ether with an acylating agent in the presence of an acid catalyst to obtain a 4-acyldiphenyl ether represented by the formula (1): wherein R represents a substituted or unsubstituted alkyl or aryl group, reacting the 4-acyldiphenyl ether with a peroxide to obtain a 4-acyloxydiphenyl ether represented by the formula (2): wherein R has the same meaning as defined above, and solvolyzing the ester bond of the 4-acyloxydiphenyl ether, is provided.
Structure-activity relationship of new growth inhibitors of Trypanosoma cruzi
Cinque, Güendalina M.,Szajnman, Sergio H.,Zhong, Li,Docampo, Roberto,Schvartzapel, Andrea J.,Rodriguez, Juan B.,Gros, Eduardo G.
, p. 1540 - 1554 (2007/10/03)
Several drugs bearing the 4-phenoxyphenoxy skeleton and other closely related structures were designed, synthesized, and evaluated as antiproliferative agents against Trypanosoma cruzi, the etiologic agent of Chagas' disease. The new class of drugs was envisioned by modifying the nonpolar 4-phenoxyphenoxy moiety replacing selected aromatic protons by different groups via electrophilic aromatic substitution reactions as well as introducing a sulfur atom at file polar extreme. Of the designed compounds, sulfur-containing derivatives were shown to be potent antireplicative agents against T. cruzi. Among these drugs, 4-phenoxyphenoxyethyl thiocyanate (compound 56) proved to be an extremely active growth inhibitor of the epimastigote forms of T. cruzi and displayed an IC500 of 2.2 μM. Under the same assay conditions, this drug was much more active than Nifurtimox, one of the drugs currently in clinical use to control this disease. This thiocyanate derivative was also a very active inhibitor against the intracellular form of the parasite at the nanomolar level. Other sulfur derivatives prepared also exhibited very potent antiproliferative action against T. cruzi. The presence of a sulfur atom at the polar extreme for this family of compounds seems to be very important for biological action because this atom was always associated with high inhibition values. 4-Phenoxyphenoxyethyl thiocyanate presents very good prospective not only as a lead drug but also as a potential chemotherapeutic agent.
CERTAIN BENZODIOXOLE, BENZODIOXANE AND BENZODIOXEPIN DERIVATIVES USEFUL AS 5-LIPOXYGENASE INHIBITORS
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, (2008/06/13)
The invention relates to the compounds of the formula wherein each R independently represents hydrogen, lower alkyl, halogen, trifluoromethyl, lower alkoxy, carbocyclic or heterocyclic aryl, carbocyclic or hetero-cyclic aryloxy, carbocyclic or heterocyclic aryl-lower alkyloxy, carbocyclic or heterocyclic aryl-lower alkyl, C3-C7-cycloalkyl-lower alkyloxy, or Cs-Cv-cycloalk-yloxy; n represents 1, 2, 3 or 4; m represents 0, 1 or 2; A represents a direct bond or lower alkylene; X represents oxygen or sulfur; Ri represents hydrogen, acyl, lower alkoxycarbonyl, aminocarbonyl, mono- or di-lower alkylaminocarbonyl, lower alkenylaminocarbonyl, lower alkynylaminocarbonyl, carbocyclic or heterocy-clic aryl-lower alkylaminocarbonyl, carbocyclic or heterocyclic arylaminocarbonyl, C3-C7-cycloalk-ylaminocarbonyl or C3-C7-cycloalkyl-lower al-kylaminocarbonyl; R2 represents lower alkyl, lower alkoxycarbonyl-lower alkyl, C3-C7-cycloalkyl, carbo-cyclic or heterocyclic aryl, carbocyclic or heterocyclic aryl-lower alkyl, C3-C7-cycloalkyl-lower alkyl, amino, mono- or di-lower alkylamino, lower alkenylamino, lower alkynylamino, carbocyclic or heterocyclic aryl-lower alkylamino, carbocyclic or heterocyclic arylamino, C3-C7-cycloalkylamino, C3-C7-cycloalkyl-lower alkylamino, lower alkoxycarbonyl-lower alkyl-amino or lower alkoxy; R3 and R4 independently repre-sent hydrogen or lower alkyl; and pharmaceuticallyacceptable salts thereof; which are useful as 5-lipoxyge-nase inhibitors.
Acetylation of phenols in organic solvent catalyzed by a lipase from chromobacterium viscosum
Nicolosi,Piatelli,Sanfilippo
, p. 2477 - 2482 (2007/10/02)
Lipase from Chromobacterium viscosum, absorbed on an inert support, was employed as catalyst for the esterification of monohydric phenols in organic solvent, with vinyl acetate as acyl donor. The effect of aromatic ring substitution on the initial rate of transesterification was investigated.
A convenient method for the preparation of 4-aryloxyphenols
Yeager,Schissel
, p. 63 - 68 (2007/10/02)
A convenient method for the preparation of 4-aryloxyphenols via the homologation of preformed phenols is described. Condensation of various 4-substituted phenols with either 4-fluorobenzaldehyde (8) or 4-fluoroacetophenone (9) yielded the corresponding 4-aryl-oxybenzaldehydes, 10, and acetophenones, 11, in 70-93% yield. Baeyer-Villiger oxidation of these materials with 3-chloroperoxybenzoic acid (MCPBA) yielded the corresponding 4-formyloxy and 4-acetoxyphenyl ethers which were hydrolyzed without purification to the desired 4-aryloxyphenols 12 in 72-94% yield. Both 4-fluorobenzaldehyde (8) and 4-fluoroacetophenone (9) are synthetically equivalent to the a4 umpoled synthon 6. Extension of this methodology of the preparation of 4,4'-[arylbis(oxy)]bisphenols from aromatic diols is also described. Condensation of various aromatic diols with 8 or 9 yielded the corresponding 4,4'-[arylbis(oxy)]bisbenzaldehydes 15 and acetophenones 16 in 71-89% yield. Baeyer-Villiger oxidation of these compounds with MCPBA yielded the desired 4,4'-[arylbis(oxy)]bisphenyl bisformates 17 and bisacetates 18 in 67-84% yield. Hydrolysis of these compounds afforded the desired 4,4'-[arylbis(oxy)bisphenols 19 in 70-91% yield.