- Synthesis and structure-activity relationship study of pyrrolidine-oxadiazoles as anthelmintics against Haemonchus contortus
-
Parasitic roundworms (nematodes) are significant pathogens of humans and animals and cause substantive socioeconomic losses due to the diseases that they cause. The control of nematodes in livestock animals relies heavily on the use of anthelmintic drugs. However, their extensive use has led to a widespread problem of drug resistance in these worms. Thus, the discovery and development of novel chemical entities for the treatment of parasitic worms of humans and animals is needed. Herein, we describe our medicinal chemistry optimization efforts of a phenotypic hit against Haemonchus contortus based on a pyrrolidine-oxadiazole scaffold. This led to the identification of compounds with potent inhibitory activities (IC50 = 0.78–22.4 μM) on the motility and development of parasitic stages of H. contortus, and which were found to be highly selective in a mammalian cell counter-screen. These compounds could be used as suitable chemical tools for drug target identification or as lead compounds for further optimization.
- Ruan, Banfeng,Zhang, Yuezhou,Tadesse, Solomon,Preston, Sarah,Taki, Aya C.,Jabbar, Abdul,Hofmann, Andreas,Jiao, Yaqing,Garcia-Bustos, Jose,Harjani, Jitendra,Le, Thuy Giang,Varghese, Swapna,Teguh, Silvia,Xie, Yiyue,Odiba, Jephthah,Hu, Min,Gasser, Robin B.,Baell, Jonathan
-
supporting information
(2020/02/04)
-
- Design, synthesis, and biological evaluation of tetrahydroisoquinoline-based diaryl urea derivatives for suppressing VEGFR-2 signaling
-
A novel structural series of tetrahydroisoquinoline-based compounds that incorporate the diaryl urea moiety was designed, synthesized, and biologically evaluated as suppressors of VEFGR-2 signaling. As a consequence, compounds 9k and 9s exhibited comparable or superior cytotoxic activity to that of gefitinib against the tested three cell lines, including A549, MCF-7, and PC-3. Importantly, both of them downregulated the expression of VEGFR-2, and inhibited VEGFR-2 phosphorylation at the concentration of 0.5 or 1.0 μmol/l. Besides, they suppressed human umbilical vein endothelial cell tube formation at the concentration of 4.0 μmol/l. Considering their capability of down-regulating VEGFR-2 expression and inhibiting VEGFR-2 phosphorylation, 9k and 9s may serve as suppressors of angiogenesis for further investigation.
- Huang, Yuanzheng,Zhang, Yang,Li, Jiaming,Ma, Xiaodong,Hu, Mengqi,Yang, Yu,Gao, Sufan
-
p. 508 - 516
(2019/05/14)
-
- Sulfonylurea dehydroabietate compound and preparation method and application thereof
-
The invention discloses a sulfonylurea dehydroabietate compound and a preparation method and application thereof. The compound has a chemical structural formula represented by a formula shown in the description, wherein R1 is 2-Br, 3-Br, 4-Br, 4-OCH3, 4-F, 2-CH3, 3-CH3, 4-CH3, 2-Cl, 3-Cl or H, and 2, 3 and 4 represent 2, 3 and 4 substituent sites on a benzene ring. The preparation method of the compound comprises the following steps synthesizing sulfonyl chloride dehydroabietate; synthesizing sulfonamide dehydroabietate; synthesizing substituted phenyl isocyanate; synthesizing N'-substituted phenyl-12-sulfonylurea dehydroabietate. The compound disclosed by the invention has better activity and low toxicity and provides a better lead compound for developing antitumor drugs.
- -
-
Paragraph 0114; 0116; 0120
(2019/02/04)
-
- Phenylquinoline transient receptor potential vanilloid 1 antagonists for the treatment of pain: Discovery of 1-(2-phenylquinoline-4-carbonyl)-N-(4-(trifluoromethyl)phenyl)pyrrolidine-3-carboxamide
-
Reported herein is the design, synthesis, and pharmacologic characterization of a class of TRPV1 antagonists constructed on a phenylquinoline platform that evolved from Cinchophen lead. This design composes three sections: a phenylquinoline headgroup attached to an aliphatic carboxamides, which is tethered at a phenyl tail group. Optimization of this design led to the identification of 37, comprising a pyrrolidine linker and a trifluoromethyl–phenyl tail. In the TRPV1 functional assay, using cells expressed hTRPV1, 37 antagonized capsaicin-induced Ca2+ influx, with an IC50 value of 10.2 nM. In the complete mice analgesic model, 37 exhibited better antinociceptive activity than the positive control BCTC in diverse pain models. All of these results suggested that 37 could be considered as a lead candidate for the further development of antinociceptive drugs.
- Liao, Chen,Liu, Yan,Liu, Chunxia,Zhou, Jiaqi,Li, Huilan,Wang, Nasi,Li, Jieming,Liu, Taiyu,Ghaleb, Hesham,Huang, Wenlong,Qian, Hai
-
p. 845 - 854
(2018/01/10)
-
- Design, synthesis and structure-activity relationship of diaryl-ureas with novel isoxazol[3,4-b]pyridine-3-amino-structure as multi-target inhibitors against receptor tyrosine kinase
-
Inspired by that the multi-target inhibitors against receptor tyrosine kinases (RTKs) have significantly improved the effect of clinical treatment for cancer, and based on the chemical structure of Linifanib (ABT-869, Abbott), two series of diaryl-ureas with novel isoxazol[3,4-b]pyridine-3-amino-structure were designed and synthesized as multi-target inhibitors against RTKs. The preliminary biological evaluation showed that several compounds exhibited comparable potency with Linifanib. Compound S21 was identified as the most potent inhibitor against Fms-like tyrosine kinase 3 (FLT-3), kinase insert domain containing receptor (KDR) and platelet-derived growth factor receptor β (PDGFR-β) with its IC50 values were 4 nM, 3 nM and 8 nM respectively, it also showed potent inhibitory activities against several cancer cells.
- Shi, Zhi-Hao,Liu, Feng-Tao,Tian, Hao-Zhong,Zhang, Yan-Min,Li, Nian-Guang,Lu, Tao
-
p. 4735 - 4744
(2018/08/21)
-
- Discovery of novel anti-angiogenesis agents. Part 8: Diaryl thiourea bearing 1H-indazole-3-amine as multi-target RTKs inhibitors
-
VEGFR-2, TIE-2, and EphB4 are essential for both angiogenesis and tumorigenesis. Herein, we designed and prepared three classes of multi-target inhibitors based on the extensive sequence homology along the kinase domain of angiogenic RTKs. Biological evaluation indicated that these multi-target inhibitors exhibited considerable potential as novel anti-angiogeneic and anticancer agents. Among them, a diaryl thiourea bearing 1H-indazole-3-amine (16a) displayed the most potent RTK inhibition and excellent selectivity. It also showed inhibition on viability of human umbilical vein endothelial cells and anti-proliferation against a broad spectrum of cancer cells. Therefore, 1H-indazole-3-amine could serve as a promising hinge binding group for multi-target inhibitors of VEGFR-2, Tie-2, and EphB4.
- Sun, Ying,Shan, Yuanyuan,Li, Chuansheng,Si, Ru,Pan, Xiaoyan,Wang, Binghe,Zhang, Jie
-
p. 373 - 385
(2017/10/16)
-
- Discovery of novel anti-angiogenesis agents. Part 7: Multitarget inhibitors of VEGFR-2, TIE-2 and EphB4
-
Herein, we embarked on a structural optimization campaign aiming at the discovery of second generation anti-angiogenesis agents with our previously reported BPS-7 as lead compound. A library of 27 compounds has been afforded based on the highly conserved ATP-binding pocket of VEGFR-2, Tie-2, and EphB4. Several title compounds exhibited simultaneous inhibitory effects against three angiogenic RTKs. These compounds with a ‘triplet’ inhibition profile have been identified as novel anti-angiogenic and anticancer agents. The representative VDAU11 displayed prominent anti-angiogenic and anticancer potency and could be considered as a candidate for further optimization. These results indicate that N-(pyridin-2-yl)acrylamide could serve as a novel hinge-binding group of triple inhibitors.
- Li, Chuansheng,Shan, Yuanyuan,Sun, Ying,Si, Ru,Liang, Liyuan,Pan, Xiaoyan,Wang, Binghe,Zhang, Jie
-
p. 506 - 518
(2017/11/14)
-
- With anti-tumor effect of a quinazoline-urea derivative and its application (by machine translation)
-
The present invention relates to a of the general formula (II) anti-tumor function of said quinazoline-urea derivative and its application. The definition of the substituent in the general formula (II) in the specification. This invention, in order to SUO draw non-Buddhist nun and Geftinat compounds as the precursor, retention of SUO draw non-Buddhist nun the pharmocology-carbamido; at the same time, such as in reserved [...] EGFR-TKIs Geftinat, synthesis, and obtain a series of quinazoline-urea derivatives, by the in vitro activity tests, some compounds exhibit excellent anti-tumor activity, such derivatives have high research and utility value. (II). (by machine translation)
- -
-
Paragraph 0139-0142; 0161
(2016/11/02)
-
- Synthesis and antibacterial activity of novel 11-[3-[(arylcarbamoyl)oxy]propylamino]-11-deoxy-6-O-methyl-3-oxoerythromycin A 11-N,12-O-cyclic carbamate derivatives
-
A series of novel 11-[3-[(arylcarbamoyl)oxy]propylamino]-11-deoxy-6-O-methyl-3-oxoerythromycin A 11-N,12-O-cyclic carbamate derivatives (6a-h) were designed, synthesized and evaluated for their antibacterial activities in vitro. Most of these compounds had significant antibacterial activity against two groups of pathogens of Methicillin-sensitive Staphylococcus aureus (MIC 50 =0.031-2 μg ml -1) except 6g and Methicillin-sensitive S. epidermidis (MIC 50 =0.031-0.5 μg ml -1). MIC 90 of 6d against Methicillin-resistant S. epidermidis was at least 16-fold better than that of erythromycin (EMA), azithromycin (AZM) and ABT-773. 6d and 6e had more potent antibacterial activity against S. pneumoniae than EMA, AZM and ABT-773. In particular, compounds 6d and 6e also showed relatively potent activity against Haemophilus influenzae and Streptococcus hemolyticus.
- Zheng, Zhonghui,Du, Deping,Cao, Lili,Liu, Jun,Chen, Xiaofang
-
p. 811 - 817
(2016/12/07)
-
- Design, synthesis, and biological evaluation of novel quinazolinyl-diaryl urea derivatives as potential anticancer agents
-
Through a structure-based molecular hybridization approach, a series of novel quinazolinyl-diaryl urea derivatives were designed, synthesized, and screened for their in vitro antiproliferative activities against three cancer cell lines (HepG2, MGC-803, and A549). Six compounds (7g, 7m, 7o, 8e, 8g, and 8m) showed stronger activity against a certain cell line compared with the positive reference drugs sorafenib and gefitinib. Among the six compounds, 8g exhibited the strongest activity. In particular, compound 8g induced A549 apoptosis, arrested cell cycle at the G0/G1 phase, elevated intracellular reactive oxygen species level, and decreased mitochondrial membrane potential. This compound can also effectively regulate the expression of apoptosis- and cell cycle-related proteins, and influence the Raf/MEK/ERK pathway. Molecular docking and structure-activity relationship analyses revealed that it can bind well to the active site of the receptor c-Raf, which was consistent with the biological data. Therefore, compound 8g may be a potent antitumor agent, representing a promising lead for further optimization.
- Chen, Jia-Nian,Wang, Xian-Fu,Li, Ting,Wu, De-Wen,Fu, Xiao-Bo,Zhang, Guang-Ji,Shen, Xing-Can,Wang, Heng-Shan
-
-
- Rhenium-catalyzed C-H aminocarbonylation of azobenzenes with isocyanates
-
The first C-H aminocarbonylation of azobenzenes with isocyanates is achieved by using rhenium-catalysis, which provides an expedient and atom-economical access to varied o-azobenzamides from readily available starting materials. The reaction efficiency can be enhanced by the catalytic use of sodium acetate via accelerated C-H bond activation.
- Geng, Xiaoyu,Wang, Congyang
-
supporting information
p. 7619 - 7623
(2015/07/15)
-
- Discovery of novel VEGFR-2 inhibitors. Part 5: Exploration of diverse hinge-binding fragments via core-refining approach
-
Pathological angiogenesis plays a critical role in numerous diseases including malignancy. VEGFR-2 is the central regulators in angiogenesis and has become a promising target for anticancer drug design. We have identified a novel biphenyl-aryl urea incorporated with salicyladoxime (BPS-7) as potent VEGFR-2 inhibitor. As a continuation to our previous research, various aromatic-heterocyclic were introduced as hinge-binding fragment via a core-refining approach. Interestingly, many compounds exhibited comparable VEGFR-2 inhibition to Sorafenib. In particular, 12e and 12o displayed excellent VEGFR-2 inhibitory activity with IC50 values of 0.50 nM and 0.79 nM, respectively. Several title compounds showed considerable antiproliferative activity against A549 and SMMC-7721 cells. In addition, molecular docking was performed to rationalize the efficiency of the better compounds. These results will be instructive for further inhibitor design and optimization.
- Shan, Yuanyuan,Gao, Hongping,Shao, Xiaowei,Wang, Jinfeng,Pan, Xiaoyan,Zhang, Jie
-
-
- Synthesis and herbicidal activity of amide derivatives containing thiazole moiety
-
Twelve novel amide derivatives containing thiazole moiety were synthesized via a coupling reaction of [4-(substituted phenyl)thiazol-2- yl] acetonitrile and aryl isocyanates catalyzed by organic bases. Their structures were characterized by 1H NMR, FTIR, MS and elemental analysis. The preliminary bioassay indicated that these compounds exhibited moderate herbicidal activities against Echinochloa crusgalli and Amaranthus ascedense.
- Weng, Jian-Quan,Liu, Xing-Hai,Tong, Guo-Tong
-
p. 2149 - 2152
(2013/05/09)
-
- A simple and efficient synthesis of diaryl ureas with reduction of the intermediate isocyanate by triethylamine
-
Thirty symmetrical diaryl urea derivatives were synthesised in moderate to excellent yields from arylamine and triphosgene with triethylamine as a reducing agent for the intermediate, isocyanate. It was significant that part of the products could be collected in almost quantitative yield without column chromatography. The procedure under mild reaction conditions was tolerant of a wide range of functional groups. The structures of the compounds were determined by NMR, MS and X-ray crystallographic analyses.
- Zhou, Shuguang,Yao, Ting,Yi, Jicheng,Li, Dashuai,Xiong, Jing
-
p. 315 - 319
(2013/07/27)
-
- Synthesis and crystal structure of N-(3-benzylamino-2-cyano-3- methylthioacrylyl)-N′-(substituted phenyl)ureas
-
Phenylurea groups were introduced into the frame of traditional cyanoacrylate and a series of N-(3-benzylamino-2-cyano-3-methylthioacrylyl)- N′-(substituted phenyl)ureas were synthesized. All compounds are new and their structures were confirmed by 1H NMR, 13C NMR and mass spectral analyses.
- Zhong, Shi Hua,Fan, Ming Liang,Liu, Bing Yu,Wei, Dong Mei,Liu, Jian Bing
-
p. 295 - 300
(2013/07/27)
-
- (Tosylimino)phenyl-λ3-iodane as a reagent for the synthesis of methyl carbamates via hofmann rearrangement of aromatic and aliphatic carboxamides
-
A new, mild procedure for the Hofmann rearrangement of aromatic and aliphatic carboxamides using (tosylimino)phenyl-λ3-iodane, PhINTs, as a reagent is reported. Because of the mild reaction conditions, this method is particularly useful for the Hofmann rearrangement of substituted benzamides, which usually afford complex reaction mixtures with other hypervalent iodine oxidants. The mild reaction conditions and high selectivity in the reaction of carboxamides with PhINTs allow the isolation of the initially formed labile isocyanates or their subsequent conversion to stable carbamates by treatment with alcohols.
- Yoshimura, Akira,Luedtke, Matthew W.,Zhdankin, Viktor V.
-
experimental part
p. 2087 - 2091
(2012/05/05)
-
- Specific inhibitors of puromycin-sensitive aminopeptidase with a 3-(halogenated phenyl)-2,4(1H,3H)-quinazolinedione skeleton
-
Specific puromycin-sensitive aminopeptidase (PSA) inhibitors with a 3-(halogenated phenyl)-2,4(1H,3H)-quinazolinedione skeleton were prepared and their structure-activity relationships were investigated. The nature (F, Cl or Br), number and position(s) of the halogen atom(s) introduced into the 3-phenyl group were concluded to be critical determinants of the inhibitory activity.
- Matsumoto, Yotaro,Noguchi-Yachide, Tomomi,Nakamura, Masaharu,Mita, Yusuke,Numadate, Akiyoshi,Hashimoto, Yuichi
-
p. 1449 - 1463
(2013/08/23)
-
- Synthesis of aryl urea derivatives from aryl amines and aryl isocyanates
-
The present study describes the synthesis of novel diaryl urea derivatives derived from aryl amine and aryl isocyanates. The synthesized compounds are analogs of sorafenib [4-[4-[[[4-chloro-3-(trifluoromethyl)phenyl]amino]carbonyl] amino]phenoxy]-N-methylpyridine-2- carboxamide] having potential antiproliferative activity.
- Usharani,Bhujanga Rao,Reddy,Dubey
-
experimental part
p. 1802 - 1806
(2011/12/22)
-
- Carbonyldiimidazole-mediated lossen rearrangement
-
[Chemical Equation Presented] Carbonyldiimidazole (CDI) was found to mediate the Lossen rearrangement of various hydroxamic acids to isocyanates. This process is experimentally simple and mild, with imidazole and CO 2 being the sole stoichiometric byproduct. Significant for large-scale application, the method avoids the use of hazardous reagents and thus represents a green alternative to standard processing conditions for the Curtius and Hofmann rearrangements.
- Dube, Pascal,Fine Nathel, Noah F.,Vetelino, Michael,Couturier, Michel,Aboussafy, Claude Larrivee,Pichette, Simon,Jorgensen, Matthew L.,Hardink, Mark
-
supporting information; experimental part
p. 5622 - 5625
(2010/03/02)
-
- Structural optimization of a CXCR2-directed antagonist that indirectly inhibits γ-secretase and reduces Aβ
-
Amyloid β (Aβ), a key molecule in the pathogenesis of Alzheimer's disease (AD), is derived from the amyloid precursor protein (APP) by sequential proteolysis via β- and γ-secretases. Because of their role in generation of Aβ, these enzymes have emerged as important therapeutic targets for AD. In the case of γ-secretase, progress has been made towards designing potent inhibitors with suitable pharmacological profiles. Direct γ-secretase inhibitors are being evaluated in clinical trials and new strategies are being explored to block γ-secretase activity indirectly as well. In this regard, we have previously reported an indirect regulation of γ-secretase through antagonism of CXCR2, a G-protein coupled receptor (GPCR). We demonstrated that N-(2-hydroxy-4-nitrophenyl)-N′-(2-bromophenyl)urea (SB225002), a selective inhibitor of CXCR2 also plays a role in an indirect inhibition of γ-secretase. Furthermore, we reported a ～5-fold difference in the selective inhibition of APP versus Notch processing via γ-secretase following treatment with SB225002. Herein we describe the synthesis and optimization of SB225002. By determination of the structure-activity relationship (SAR), we derived small molecules that inhibit Aβ40 production with IC50 values in the sub-micromolar range in a cell-based assay and also validated the potential of CXCR2 as a new target for therapeutic intervention in AD.
- Bakshi, Pancham,Jin, Chao,Broutin, Pierre,Berhane, Beniam,Reed, Jon,Mullan, Michael
-
experimental part
p. 8102 - 8112
(2010/03/24)
-
- A facile method for preparation of aromatic isocyanates using bis(trichloromethyl)carbonate
-
A facile synthesis of aromatic isocyanates using bis(trichloromethyl)carbonate (BTC) is reported with high yields of products. BTC is used to supply phosgene in situ in stoichiometric amounts.
- Xu, Zhenyuan,Du, Xiaohue,Su, Weike
-
p. 962 - 963
(2007/10/03)
-
- 5-HT2A receptor inverse agonists
-
Disclosed herein is a new class of pyrazole compounds which act at the 5HT2A receptors.
- -
-
-
- Small molecule modulators of non-endogenous, constitutively activated human serotonin receptors
-
Disclosed herein are non-endogenous, constitutively activated forms of the human 5-HT2A and human 5-HT2C receptors and uses of such receptors to screen candidate compounds. Further disclosed herein are candidate compounds identified by the screening method which act at the 5HT2A receptors. Yet further disclosed is a new class of compounds which act at the 5HT2A receptors.
- -
-
-
- Synthesis of new substituted sulfonylhydrazinecarboxamides and sulfonylhydrazinecarbothioamides having antifungal and antibacterial activities
-
p-Toluenesulfonylhydrazide 3 on condensation with substituted phenyl isocyanates 2a-i and substituted phenyl isothiocyanates 2j-p gives N, 2-disubstituted sulfonylhydrazinecarboxamides 4a-i and N, 2-disubstituted sulfonylhydrazinecarbothioamides 4j-p respectively. Compounds 4a-p have been found to be bactericidal against S. aureus and S. lyphi while compound 4n shows fungicidal activity against T. mentagrophytes and T. rubrum.
- Nalavde,Joshi
-
-
- 2-amino-4H-3,1-benzoxazin-4-ones as inhibitors of C1r serine protease
-
A series of 2-amino-4H-3,1-benzoxazin-4-ones have been synthesized and evaluated as inhibitors of the complement enzyme C1r. C1r is a serine protease at the beginning of the complement cascade, and complement activation by β-amyloid may represent a major contributing pathway to the neuropathology of Alzheimer's disease. Compounds such as 7-chloro-2-[(2- iodophenyl)amino]benz[d][1,3]oxazin-4-one (32) and 7-methyl-2-[(2- iodophenyl)amino]benz[d][1,3]oxazin-4-one (37) show improved potency compared to the reference compound FUT-175. Many of these active compounds also possess increased selectivity for C1r compared to trypsin and enhanced hydrolytic stability relative to 2-(2-iodophenyl)-4H-3,1-benzoxazin-4-one (1).
- Hays, Sheryl J.,Caprathe, Bradley W.,Gilmore, John L.,Amin, Nilam,Emmerling, Mark R.,Michael, Walter,Nadimpalli, Ravi,Nath, Rathna,Raser, Kadee J.,Stafford, Daniel,Watson, Desiree,Wang, Kevin,Jaen, Juan C.
-
p. 1060 - 1067
(2007/10/03)
-
- Photochemical generation of nitric oxide from 3,4-Bis-2′-chlorophenylfuroxan
-
Photolysis of 3,4-bis-2′-chlorophenylfuroxan generated nitric oxide and bis-2-chlorophenylacetylene in 17% yield. This is the first example of the photochemical generation of the nitric oxide from the furoxan.
- Hwang, Kwang-Jin,Kim, Sung Ki,Shim, Sang Chul
-
p. 859 - 859
(2007/10/03)
-
- Arylcarbamate derivatives of 1-piperidineethanol as potent ligands for 5-HT4 receptors
-
A series of carbamate derivatives (7) of 2-(1-piperidinyl)ethyl 4- amino-5-chloro-2-methoxybenzoates, which have been described as potent agonists and antagonists of 5-HT4 receptors, were synthesized. They were evaluated using radioligand binding assays with [3H]GR 113808, a 5-HT4 receptor selective ligand, in the rat striatum and the electrically stimulated myenteric plexus longitudinal muscle of the guinea pig. In contrast to the previously described ester derivatives, a drop in the affinity for 5-HT4 receptors was observed and the compounds were inactive as agonists in the guinea pig ileum preparation. Unexpectedly, the ortho- substituted carbamates 8b,c (R' = H, RO = MeO or EtO, R'' = H) had nanomolar affinity for 5-HT4 receptors (K(i) = 8.9 ± 0.5 and 2.6 ± 0.4 nM, respectively). As reported previously, the cis- or trans-3,5-dimethyl substitution of piperidine (8n,o) was particularly favorable (K(i) = 1.1 ± 0.6 nM for both isomers). 8c is an antagonist equipotent to the 5-HT4 receptor antagonist SDZ 205-557 (1).
- Soulier, Jean-Louis,Yang, Donglai,Brémont, Béatrice,Croci, Tiziano,Guzzi, Umberto,Langlois, Michel
-
p. 1755 - 1761
(2007/10/03)
-
- SYNTHESIS OF N-(2-CHLOROPHENYLSULFONYL)-N'-(4-METHOXY-6-METHYL-1,3,5-TRIAZIN-2-YL)-UREA WITH A RADIOACTIVE LABEL
-
Methods for the introduction of a radioactive 13C label into N-(2-chlorophenylsulfonyl)-N'-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea, which has herbicidal activity, are described.
- Sokolova, G. D.,Khokhlov, P. S.
-
p. 547 - 550
(2007/10/02)
-
- 2-Amino-4,5-dihydro-1H-imizole-1-carboxanilides
-
Novel 2-amino-4,5-dihydro-1H-imidazole-1-carboxanilides, which are made by reacting 2-amino-4,5-dihydroimidazole with an aryl isocyanate, are made stable to rearrangement when converted to acid addition salt form, and are useful either as antihypertensive agents and/or antisecretary agents, as well as being intermediates to prepare known pharmacologically active N-aryl-N'-(4,5-dihydro-1H-imidazol-2-yl)ureas.
- -
-
-
- Herbicidally active methyl-substituted tetrahydro-2-pyrimidinone derivatives
-
Methyl-substituted tetrahydro-2-pyrimidinone derivatives of the general formula STR1 in which each Ar, independently of each other, represents an aryl group which is optionally mono- or poly-substituted by substituent(s) selected from halogen, C1 to C6 alkyl, C1 to C6 alkoxy, C1 to C6 alkylthio, nitro, phenoxy and trifluoromethyl, and R1, R2 and R3 independently represent a hydrogen atom or a methyl group, provided that at least one of R1, R2 and R3 represents a methyl group, are new and find use as herbicides, in particular as selective herbicides which may be used on weeds in crops such as cotton and rice. The N,N'-diaryl-N-haloalkyl-ureas which are starting materials for the production of compounds of formula (I) are also new.
- -
-
-
