- NITRATION
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The present invention relates to a process for preparing a nitrated compound, comprising the step of reacting a compound (A) comprising at least one substituted or unsubstituted aromatic or heteroaromatic ring, wherein said heteroaromatic ring comprises at least one heteroatom selected from the group consisting of oxygen, sulfur, phosphor, selenium and nitrogen, with a compound of formula (I) wherein Y is selected from the group consisting of hydrogen and nitro.
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Page/Page column 36; 46; 40; 59
(2020/05/28)
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- Aminobenzoic acid derivative and preparation method and application thereof
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The invention relates to an aminobenzoic acid derivative and a preparation method and application thereof, and belongs to the field of medicinal chemistry, and the structural formula of the aminobenzoic acid derivative is shown in the specification, R is alkyl, substituted phenyl, heteroaromatic ring group or substituted styryl; R is alkyl; R is alkyl, substituted phenyl or benzyl; R is alkyl; R is guanidyl; and R is alkyl. The preparation method is simple and high in yield. Most compounds of the invention have good influenza virus neuraminidase inhibition activity.
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Paragraph 0102-0103
(2020/12/30)
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- Synthesis and antitumor activity of feruloyl and caffeoyl derivatives This paper is dedicated to Prof. Wei-xiao Hu for his lifelong commitment to mentoring graduate students
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We developed two efficient protocols for the synthesis of feruloyl and caffeoyl derivatives from commercial vanillin and veratraldehyde. Pharmacological activities were assessed against a panel of human cancer cell lines in vitro. Most synthesized compounds demonstrated attractive cytotoxicity. Several new compounds demonstrated significant antiproliferative and cytotoxic activities against HeLa and Bewo tumor cell lines. In particular, 5-nitro caffeic adamantyl ester showed broad spectrum of tumor inhibition in 10 cell lines, and reduced tumor weight by 36.7% in vivo when administered at a dose of 40 mg kg-1.
- Chen, Hui-Zhen,Chen, You-Bao,Lv, Ya-Ping,Zeng, Fang,Zhang, Juan,Zhou, Yong-Lie,Li, Han-Bing,Chen, Li-Fei,Zhou, Bin-Jie,Gao, Jian-Rong,Xia, Chun-Nian
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supporting information
p. 4367 - 4371
(2015/02/06)
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- Synthesis and biological evaluation of cinnamido linked benzophenone hybrids as tubulin polymerization inhibitors and apoptosis inducing agents
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A new class of hybrid molecules containing cinnamide subunit linked to benzophenone as inhibitors of tubulin polymerization were synthesized and evaluated for their anticancer potential. These hybrids exhibit anticancer activity with IC50 values ranging from 0.06 to 16.3 μM. Compounds 4f and 4g possessing fluoro and trifluoromethyl on the cinnamido subunit showed significant cytotoxic activity with IC50 values 0.06 and 0.09 μM against HeLa cell line, respectively. These compounds showed cell cycle arrest at G2/M phase of the cell cycle and inhibited tubulin polymerization followed by activation of caspase-3 activity and apoptotic cell death. Further in vitro tubulin polymerization assay showed that the level of tubulin inhibition was comparable to that of 2a for the compounds 4f and 4g. Moreover, Hoechst 33258 staining and DNA fragmentation assay suggested that these compounds induce cell death by apoptosis. Overall, the current study demonstrates that the synthesis of benzophenone linked cinnamide subunit conjugates as promising anticancer agents with G2/M arrest and apoptotic-inducing ability via targeting tubulin.
- Kamal, Ahmed,Reddy, Ch. Ratna,Vishnuvardhan,Mahesh,Lakshma Nayak,Prabhakar,Reddy, C. Suresh
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p. 2309 - 2314
(2014/05/20)
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- SUBSTITUTED ISOQUINOLINES AND THEIR USE AS TUBULIN POLYMERIZATION INHIBITORS
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The present invention relates generally to substituted isoquinolines and their use as tubulin polymerization inhibitors. In particular, the invention relates to substituted isoquinolines which possess useful therapeutic activity, use of these compounds in methods of therapy and the manufacture of medicaments as well as compositions containing these compounds
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Page/Page column 236-237
(2011/12/14)
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- Discovery of a long-acting, peripherally selective inhibitor of catechol- O -methyltransferase
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Novel nitrocatechol-substituted heterocycles were designed and evaluated for their ability to inhibit catechol-O-methyltransferase (COMT). Replacement of the pyrazole core of the initial hit 4 with a 1,2,4-oxadiazole ring resulted in a series of compounds endowed with longer duration of COMT inhibition. Incorporation of a pyridine N-oxide residue at position 3 of the 1,2,4-oxadiazole ring led to analogue 37f, which was found to possess activity comparable to entacapone and lower toxicity in comparison to tolcapone. Lead structure 37f was systematically modified in order to improve selectivity and duration of COMT inhibition as well as to minimize toxicity. Oxadiazole 37d (2,5-dichloro-3-(5-(3,4-dihydroxy-5-nitrophenyl)-1,2,4-oxadiazol-3-yl)-4, 6-dimethylpyridine 1-oxide (BIA 9-1067)) was identified as a long-acting, purely peripheral inhibitor, which is currently under clinical evaluation as an adjunct to l-Dopa therapy of Parkinson's disease.
- Kiss, László E.,Ferreira, Humberto S.,Torr?o, Leonel,Bonifácio, Maria Jo?o,Palma, P. Nuno,Soares-Da-Silva, Patrício,Learmonth, David A.
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supporting information; experimental part
p. 3396 - 3411
(2010/09/05)
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- 4-(3-Halo/amino-4,5-dimethoxyphenyl)-5-aryloxazoles and-N-methylimidazoles That Are cytotoxic against combretastatin a resistant tumor cells and vascular disrupting in a cisplatin resistant germ cell tumor model
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New combretastatin A analogues featuring oxazole or N-methylimidazole bridged Z-alkenes and halo-or amino-substituted A-rings were tested against various cancer cell lines and in testicular germ cell tumor xenografts in mice. Imidazoles with 3-halo-4,5-dimethoxy substituted A-rings and 3-amino-4-methoxy substituted B-rings (7b and 8b) were efficacious at nanomolar concentrations against cells of combretastatin A refractory HT-29 colon carcinoma, multidrug-resistant MCF-7/Topo breast carcinoma, and cisplatin-resistant 1411HP testicular germ cell tumor. They induced apoptosis and inhibited tubulin polymerization. While well tolerated by mice at high doses, these imidazoles initiated extensive intratumoral hemorrhage and regressions of highly vascularized 1411HP xenografts.
- Schobert, Rainer,Biersack, Bernhard,Dietrich, Andrea,Effenberger, Katharina,Knauer, Sebastian,Mueller, Thomas
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scheme or table
p. 6595 - 6602
(2010/11/19)
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- Synthesis and evaluation of bifunctional nitrocatechol inhibitors of pig liver catechol-O-methyltransferase
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Bifunctional compounds were tested in vitro as potential inhibitors of pig liver catechol-O-methyltransferase (COMT) with respect to the catechol substrate 4-[(3,4-dihydroxyphenyl)azo]benzenesulfonate. The bifunctional compounds were a composite of either two nitrocatechols or one nitrocatechol and one phenol, linked by amide bonds to a spacer unit comprising two to five methylene groups. The unsymmetrical compounds N-[2-(4-hydroxybenzoylamine)ethyl]-3,4-dihydroxy-5- nitrobenzamide], N-[3-(4-hydroxybenzoyl-amine)propyl]-3,4-dihydroxy-5- nitrobenzamide] and N-[5-(4-hydroxybenzoylamine)pentyl]-3,4-dihydroxy-5- nitrobenzamide] demonstrated strong inhibitory action against COMT with K i values in the 100 nM range. In comparison, the monofunctional nitrocatechol analogues of these compounds had Ki values that were significantly higher.
- Bailey, Karl,Tan, Eng Wui
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p. 5740 - 5749
(2007/10/03)
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- Further naphthylcombretastatins. An investigation on the role of the naphthalene moiety
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By synthesis and biological studies of new naphthalene analogues of combretastatins, we have found that the naphthalene is a good surrogate for the isovanillin moiety (3-hydroxy-4-methoxyphenyl) of combretastatin A-4, always generating highly cytotoxic analogues when combined with the 3,4,5-trimethoxyphenyl or related systems. On the other hand, when the naphthalene replaces the 3,4,5-trimethoxyphenyl moiety, the cytotoxic activity is largely decreased. The most cytotoxic naphthalene analogues of combretastatins, which also produce inhibition of tubulin polymerization, exerted their antimitotic effects through microtubule network disruption and subsequent G2/M arrest of the cell cycle in human cancer cells.
- Maya, Ana B. S.,Pérez-Melero, Concepción,Mateo, Carmen,Alonso, Dulce,Fernández, José Luis,Gajate, Consuelo,Mollinedo, Faustino,Peláez, Rafael,Caballero, Esther,Medarde, Manuel
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p. 556 - 568
(2007/10/03)
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- Benzoxazepinones and their use as squalene synthase inhibitors
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There is disclosed a compound represented by the formula [I]: wherein R1 is optionally substituted 1-carboxyethyl group, optionally substituted alkyl-sulfonyl group, optionally substituted (carboxy-cycloalkyl)-alkyl group, -X1-X2-Ar-X3-X4-COOH (wherein X1 and X4 are a bond or alkylene group, X2 and X3 are a bond, -O-, -S-, Ar is divalent aromatic group etc.), R2 is alkyl group optionally substituted with alkanoyloxy group and/or hydroxy group, R3 is alkyl group, and W is halogen atom, etc., or a salt thereof. The compound has the cholesterol lowering activity and the triglyceride lowering activity and is useful for preventing and/or treating hyperlipidemia.
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- Syntheses of 5-fluoro-D/L-dopa and 5-fluoro-L-dopa
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This paper describes the synthesis of 5-fluoro-D/L-dopa and the corresponding 5-fluoro-L-dopa starting from 5-nitrovanillin via malonic ester synthesis, the Balz-Schiemann reaction and the separation of the racemic mixture 5-fluoro-D/L-dopa
- Argentini, Mario,Wiese, Claudia,Weinreich, Regin
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p. 141 - 144
(2007/10/02)
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- COMPOUNDS AND METHODS FOR THE TREATMENT OF DISORDERS MEDIATED BY PLATELET ACTIVATING FACTOR OR PRODUCTS OF 5-LIPOXYGENASE
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2,5-Diaryl tetrahydrofurans, 2,5-diaryl terahydrothiophenes, 2, 4-diaryl tetrahydrofurans, 2,4-diaryl tetrahydrothiphenes, 1,3-diaryl cyclopentanes, 2,4-diaryl pyrrolidines, and 2,5-diaryl pyrrolidines are disclosed that reduce the chemotaxis and respiratory burst leading to the formation of damaging oxygen radicals of polymorphonuclear leukocytes during an inflammatory or immune response. The compounds exhibit this biological activity by acting as PAF receptor antagonists, by inhibiting the enzyme 5-lipoxygenase, or by exhibiting dual activity, i.e., by acting as both a PAF receptor antagonist and inhibitor of 5-lipoxygenase. A method to treat disorders mediated by PAF or leukotrienes is also disclosed, that includes administering an effective amount of one or more of the above-identified compounds or a pharmaceutically acceptable salt thereof, optionally in a pharmaceutically acceptable carrier.
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- A NEW TOTAL SYNTHESIS OF AAPTAMINE
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A new synthesis of the α-adrenoceptor blocker aaptamine (1) from the readily available 5-nitrovanillin is reported.An unusual intramolecular nucleophilic displacement of a nitro-group is described.
- Andrew, Robert G.,Raphael, Ralph A.
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p. 4803 - 4816
(2007/10/02)
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- The melosatins-a novel class of alkaloids from melochia tomentosa1 1 Part 13 in the series, Potential Carcinogens. For Part 12 see Ref. 2.
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Details of the isolation of malosatin A, B, and C and the synthesis of melosatin A are presented. Melosatin C has been characterized as 7-methoxy-4-(5-phenylpentyl)isatin. Several Me and OMe substituted isatins are synthesized as models and UV and mass sp
- Kapadia,Shukla,Basak,Sokoloski,Fales
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p. 2441 - 2447
(2007/10/02)
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