- New pyrazolium-carboxylates as structural analogues of the pseudo-cross-conjugated betainic alkaloid nigellicine
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Pyrazolium-3-carboxylates were examined as relatives of the betainic alkaloid Nigellicine and as new examples of the sparsely populated class 16 of heterocyclic pseudo-cross-conjugated mesomeric betaines (PCCMB). The title compounds were prepared in a 4-step procedure starting from β-diketo compounds 8 which were cyclized with substituted hydrazines. The resulting isomeric pyrazole esters 9 and 10 were separated and subsequently quaternized with dimethyl sulfate in the presence of nitrobenzene to pyrazolium esters 11 and 12. Saponification was best accomplished in diluted sulfuric acid, which resulted in the formation of the pseudo-cross-conjugated mesomeric betaines 13 and 14 in one step. Protonation to the corresponding carboxylic acids required the treatment of the betaines with tetrafluoroboric acid in dichloromethane. The effect of negative solvatochromism proves the charge separation in the ground state of the molecules. X-ray crystallographic analyses, semiempirical calculations, and ESI mass spectrometric measurements were performed to gain knowledge about the phenomenon of pseudo-cross-conjugation.
- Schmidt, Andreas,Habeck, Tobias,Kindermann, Markus Karl,Nieger, Martin
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Read Online
- Substituted heterocyclic compound containing urea skeleton and preparation method and application of substituted heterocyclic compound
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The invention discloses a substituted heterocyclic compound containing a urea skeleton and a preparation method and application of the substituted heterocyclic compound, and relates to the field of pharmaceutical chemistry, in particular to the substituted heterocyclic compound containing the urea skeleton or pharmaceutically acceptable salt of the substituted heterocyclic compound, a pharmaceutical composition containing the compounds and medical application of the compounds. Particularly, the invention relates to application of the substituted heterocyclic compound as an FAAH inhibitor in preparing drugs for preventing or treating diseases associated with FAAH, such as depression, analgesia, cannabinoid using disorders and other related diseases.
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- N-hydroxyl-5-substituted-1H-pyrazol-3-formamide compound as well as preparation method and use thereof
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The invention belongs to the field of medicine chemistry, and particularly relates to an N-hydroxyl-5-substituted-1H-pyrazol-3-formamide compound as well as a preparation method and use thereof. The specific structure of the compound is as shown in a formula I. The invention also provides a synthesis method of the compound in the formula I and inhibition activity thereof for acidic sphingomyelinase. The compound can be used for developing drugs for treating atherosclerosis (AS), diabetes, emphysema, pulmonary edema, pulmonary fibrosis, cystic fibrosis, chronic obstructive pulmonary disease, pulmonary arterial hypertension, non-alcoholic fatty liver disease, Alzheimers (AD), multiple sclerosis (MS), cerebral stroke and depression diseases. (the formula I is shown in the description).
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Paragraph 0024; 0028; 0029
(2019/02/03)
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- FIVE-MEMBERED HETEROCYCLIC AMIDES WNT PATHWAY INHIBITOR
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The present invention discloses a five-membered heterocyclic amide WNT pathway inhibitor, which belongs to a compound that regulates the activity of a Wnt signaling pathway, and provides a method for preparing such a compound, and the use of such a compound in preparing a medicament that antagonizes the Wnt signaling pathway. The five-membered heterocyclic amide WNT pathway inhibitor provided by the invention has a remarkable anti-tumor activity based on a target-based rational drug design of, and can be used for the development of a new generation of Wnt pathway inhibitors, and has a great clinical application value and considerable market potential.
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Paragraph 0166; 0168; 0169
(2018/10/19)
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- C3-CARBON LINKED GLUTARIMIDE DEGRONIMERS FOR TARGET PROTEIN DEGRADATION
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This invention provides Degronimers that have carbon-linked E3 Ubiquitin Ligase targeting moieties (Degrons), which can be linked to a targeting ligand for a protein that has been selected for in vivo degradation, and methods of use and compositions thereof as well as methods for their preparation.
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Page/Page column 305
(2017/12/05)
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- Discovery and evaluation of Cav3.1-selective T-type calcium channel blockers
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We identified and characterized a series of pyrazole amides as potent, selective Cav3.1-blockers. This series culminated with the identification of pyrazole amides 5a and 12d, with excellent potencies and/or selectivities toward the Cav3.2- and Cav3.3-channels. This compound displays poor DMPK properties, making its use difficult for in vivo applications. Nevertheless, this compound as well as analogous ones are well-suited for in vitro studies.
- Bezen?on, Olivier,Remeň, Lubo?,Richard, Sylvia,Roch, Catherine,Kessler, Melanie,Moon, Richard,Mawet, Jacques,Ertel, Eric A.,Pfeifer, Thomas,Capeleto, Bruno
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p. 5322 - 5325
(2017/10/26)
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- NOVEL COMPOUND, METHOD FOR PREPARATION THEREOF, AND ANTIFUNGAL COMPOSITION COMPRISING THE SAME
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Disclosed are a compound having an excellent antifungal activity, a composition containing the same, and its use for prevention and treatment of fungal infectious diseases.
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Page/Page column 24; 25
(2015/05/26)
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- A new efficient synthesis of pyrazoles from hydrazonoyl halides and β-oxophosphonates
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A new practical and efficient synthesis of 1,3,5-trisubstituted pyrazoles has been developed by reacting of hydrazonoyl halides with β-oxophosphonates under mild conditions in good yields with excellent regioselectivity. This process employs an addition-elimination sequence. Wide scope, functional group compatibility has been established.
- Sun, Aixue,Ye, Jia-Hai,Yu, Haitao,Zhang, Wenchao,Wang, Xiaolong
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supporting information
p. 889 - 892
(2015/03/03)
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- SUBSTITUTED 1H-PYRAZOL-1,2,4-OXADIAZOLE DERIVATIVES AS SPHINGOSINE RECEPTOR MODULATORS
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The present invention relates to substituted 1H-pyrazol-1,2,4-oxadiazole derivatives, processes for preparing them, pharmaceutical compositions containing them and their use as pharmaceuticals as modulators of sphingosine-1-phosphate receptors.
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Paragraph 196-198
(2014/09/03)
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- A new efficient synthesis of pyrazoles from hydrazonoyl halides and β-oxophosphonates
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A new practical and efficient synthesis of 1,3,5-trisubstituted pyrazoles has been developed by reacting of hydrazonoyl halides with β- oxophosphonates under mild conditions in good yields with excellent regioselectivity. This process employs an addition-elimination sequence. Wide scope, functional group compatibility has been established.
- Sun, Aixue,Ye, Jia-Hai,Yu, Haitao,Zhang, Wenchao,Wang, Xiaolong
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supporting information
p. 889 - 892
(2014/02/14)
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- Synthesis of N-methoxy-N-methyl-β-enaminoketoesters: New synthetic precursors for the regioselective synthesis of heterocyclic compounds
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Weinreb amides react with the lithium or sodium acetylide of ethyl propynoate in a hitherto unexplored acyl substitution-conjugate addition sequence to furnish (E)-N-methoxy-N-methyl-β-enaminoketoesters. This approach provides a diverse entry to densely functionalized heterocyclic compounds, including pyrazoles through regioselective cyclocondensations with hydrazines in a microwave-assisted reaction.
- Persson, Tobias,Nielsen, John
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p. 3219 - 3222
(2007/10/03)
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- ANTIBACTERIAL BENZOIC ACID DERIVATIVES
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The invention provides antimicrobial agents and methods of using the agents for sterilization, sanitation, antisepsis, disinfection, and treatment of infections in mammals.
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- Azaindoles
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The invention is directed to compositions containing physiologically active compounds of general formula (I): wherein R1 is aryl or heteroaryl; R2 represents hydrogen, acyl, cyano, halo, lower alkenyl or lower alkyl optionally substituted by a substituent selected from cyano, heteroaryl, heterocycloalkyl, —Z1R8, —C(═O)—NY3Y4, —CO2R8, —NY3Y4, —N(R6)—C(═O)—R7, —N(R6)—C(═O)—NY3Y4, —N(R6)—C(═O)—OR7, —N(R6)—SO2—R7, —N(R6)—SO2—NY3Y4 and one or more halogen a toms ; R3 represents hydrogen, aryl, cyano, halo, heteroaryl, lower alkyl, —C(═O)—OR5 or —C(═O)—NY3Y; and X1 represents N, CH, C-halo, C—CN, C—R7, C—NY3Y4, C—OH, C—Z2R7, C—C(═O)—OR5, C—C(═O)—NY3Y4, C—N(R8)—C(═O)—R7, C—SO2—NY3Y4, C—N(R8)—SO2—R7, C-alkenyl, C-alkynyl or C—NO2; and their prodrugs, and pharmaceutically acceptable salts and solvates of such compounds and their prodrugs, as well as to novel compounds within the scope of formula (I). Such compounds and compositions have valuable pharmaceutical properties, in particular the ability to inhibit protein kinases.
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Page/Page column 119
(2008/06/13)
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- N-[(substituted five-membered di- or triaza diunsaturated ring)carbonyl] guanidine derivatives for the treatment of ischemia
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NHE-1 inhibitors, methods of using such NHE-1 inhibitors and pharmaceutical compositions containing such NHE-1 inhibitors. The NHE-1 inhibitors are useful for the reduction of tissue damage resulting from tissue ischemia.
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- CARBOXYLIC ACID DERIVATIVES AND DRUGS CONTAINING THE SAME
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The present invention provides a novel carboxylic acid compound, a salt thereof or a hydrate of them useful as an insulin-resistant improver, and a medicament comprising the compound as an active ingredient. That is, the present invention provides a carboxylic acid compound represented by the following formula (I), a salt thereof, an ester thereof or a hydrate of them. In the formula, R1 represents hydrogen atom, hydroxyl group or a C1-6 alkyl group etc. which may have one or more substituents; L represents a single or double bond or a C1-6 alkylene group etc. which may have one or more substituents; M represents a single bond or a C1-6 alkylene group etc. which may have one or more substituents; T represents a single bond or a C1-3 alkylene group which may have one or more substituents; W represents carboxyl group or a group represented by the formula -CON(Rw1)Rw2 (wherein Rw1 and Rw2 are the same as or different from each other and each represents hydrogen atom, formyl group etc.) etc.; represents a single or double bond; X represents oxygen atom or a C2-6 alkenylene group etc. which may have one or more substituents; Y represents a C5-12 aromatic hydrocarbon group etc. which may have one or more substituents and which may have one or more heteroatoms; and ring Z represents a C5-6 aromatic hydrocarbon group which may have 0 to 4 substituents and which may have one or more heteroatoms.
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- Novel generation of azomethine imines from α-silylnitrosamines by 1,4- silatropic shift and their cycloaddition
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Novel and facile generation of azomethine imines from α- silylnitrosamines and subsequent cycloaddition with dipolarophiles leading to a variety of pyrazole derivatives have been developed. The key to the reaction is a 1,4-silatropic shift caused by stron
- Washizuka, Ken-Ichi,Nagai, Keiko,Minakata, Satoshi,Ryu, Ilhyong,Komatsu, Mitsuo
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p. 8849 - 8853
(2007/10/03)
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- Haloacetylated enol ethers. 11 [16]. Synthesis of 1-methyl- and 1- phenyl pyrazole-3(5)-ethyl esters. A one-pot procedure
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A one-pot synthesis of 1-methyl- and 1-phenylpyrazole-3(5)-ethyl esters 2,3a-e by the cyclocondensation of β-alkoxyvinyl trichloromethyl ketones 1a- e with methyl and phenyl hydrazine hydrochloride under mild conditions, is reported. A study using compounds la-e with different substituents proved that these are versatile building blocks for the synthesis of pyrazole derivatives, having a 3(5)-ethoxycarbonyl substituent in good yields (60- 89%). The hydrazine and β-alkoxyvinyl trichloromethyl ketone substituent effects on the reaction regiochemistry on the formation of the 1,3- and 1,5- isomer were observed.
- Martins, Marcos A. P.,Freitag, Rogerio A.,Da Rosa, Adriano,Flores, Alex F. C.,Zanatta, Nilo,Bonacorso, Helio G.
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p. 217 - 220
(2007/10/03)
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