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Wu P, Song Z, Wang X, Li Y, Li Y, Cui J, Tuerhong M, Jin DQ, Abudukeremu M, Lee D, Xu J, Guo Y. Bioactive triterpenoids from Lantana camara showing anti-inflammatory activities in vitro and in vivo. Bioorg Chem 2020; 101:104004. [DOI: 10.1016/j.bioorg.2020.104004] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/06/2020] [Accepted: 06/08/2020] [Indexed: 12/17/2022]
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2
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Qian S, Xie Z, Liu J, Li M, Wang S, Luo N, Wang C. DBU-Promoted Cascade Annulation of Nitroarylcyclopropane-1,1-dicarbonitriles and 3-Aryl-2-cyanoacrylates: An Access to Highly Functionalized Cyclopenta[b]furan Derivatives. J Org Chem 2018; 83:14768-14776. [DOI: 10.1021/acs.joc.8b02325] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Siran Qian
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Zengyang Xie
- College of Basic Medicine, Jining Medical University, Jining 272067, P. R. China
| | - Jiaming Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Mingshuang Li
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Shan Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Naili Luo
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
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N-substituted bis-C-alkyloxadiazolones as dual effectors: Efficient intermediates to amidoximes or amidines and prodrug candidates of potent antimalarials. Bioorg Med Chem Lett 2009; 19:5233-6. [DOI: 10.1016/j.bmcl.2009.07.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Revised: 06/29/2009] [Accepted: 07/01/2009] [Indexed: 11/19/2022]
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4
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Cuccioloni M, Mozzicafreddo M, Bonfili L, Cecarini V, Eleuteri AM, Angeletti M. Natural occurring polyphenols as template for drug design. Focus on serine proteases. Chem Biol Drug Des 2009; 74:1-15. [PMID: 19519739 DOI: 10.1111/j.1747-0285.2009.00836.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Several major physio-pathological processes, including cancer, inflammatory states and thrombosis, are all strongly dependent upon the fine regulation of proteolytic enzyme activities, and dramatic are the consequences of unbalanced equilibria between enzymes and their cognate inhibitors. In this perspective, the discovery of small-molecule ligands able to modulate catalytic activities has a massive therapeutic potential and is a stimulating goal. Numerous recent experimental evidences revealed that proteolytic enzymes can be opportunely targeted, reporting on small ligands capable of binding to these biological macromolecules with drug-like potencies, and primarily with comparable (or even higher) efficiency with respect to their endogenous binding partner. In particular, natural occurring polyphenols and their derivatives recently disclosed these intriguing abilities, making them promising templates for drug design and development. In this review, we compared the inhibitory capacities of a set of monomeric polyphenols toward serine proteases activity, and finally summarized the data with an emphasis on the derivation of a pharmacophore model.
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Affiliation(s)
- Massimiliano Cuccioloni
- Department of Molecular, Cellular and Animal Biology, University of Camerino, Via Gentile III da Varano, Camerino (MC), Italy.
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Sharma OP, Sharma S, Pattabhi V, Mahato SB, Sharma PD. A review of the hepatotoxic plant Lantana camara. Crit Rev Toxicol 2007; 37:313-52. [PMID: 17453937 DOI: 10.1080/10408440601177863] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Lantana (Lantana camara Linn) is a noxious weed that grows in many tropical and subtropical parts of the world. Ingestion of lantana foliage by grazing animals causes cholestasis and hepatotoxicity. Both ruminants and nonruminant animals such as guinea pigs, rabbits, and female rats are susceptible to the hepatotoxic action of lantana toxins. The hepatotoxins are pentacyclic triterpenoids called lantadenes. Molecular structure of lantadenes has been determined. Green unripe fruits of the plant are toxic to humans. Lantana spp. exert allelopathic action on the neighboring vegetation. The allelochemicals have been identified as phenolics, with umbelliferone, methylcoumarin, and salicylic acid being the most phytotoxic. In addition to phenolics, a recent report indicates lantadene A and B as more potent allelochemicals. Management of lantana toxicosis in animals is achieved by drenching with activated charcoal and supportive therapy. Recent reports on the bilirubin clearance effect of Chinese herbal tea Yin Zhi Huang (decoction of the plant Yin Chin, Artemisia capillaries, and three other herbs) or its active ingredient 6,7-dimethylesculetin, in jaundice are very exciting and warrant investigations on its, possible, ameliorative effects in lantana intoxicated animals. Research is being conducted on new drug discovery based on natural products in different parts of the lantana plant.
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Affiliation(s)
- Om P Sharma
- Biochemistry Laboratory, Indian Veterinary Research Institute, Regional Station. Kangra Valley, Palampur, India.
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Srivastava S, Goswami LN, Dikshit DK. Progress in the design of low molecular weight thrombin inhibitors. Med Res Rev 2005; 25:66-92. [PMID: 15389730 DOI: 10.1002/med.20016] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Intravascular thrombosis and its complication, embolism, is a leading cause of morbidity and mortality throughout the world. Past few decades have seen a great deal of progress in the development of antithrombotic agents, though the current treatment options are limited to heparin, LMW heparins, and warfarin. Detailed understanding of the biochemical and biophysical mechanisms of activation and regulation of blood coagulation have helped in developing specific inhibitors of enzymes, especially thrombin, within the coagulation cascade. Thrombin plays a central role in the coagulation cascade and so has become the primary target for the development of antithrombotic drugs. The review covers the main pharmacological aspects of haemostasis and thrombosis and provides an update on low molecular weight thrombin inhibitors along with the limitations of the prevalent antithrombotic agents. Recent developments in small molecule inhibitors of Protease Activated Receptor-1 (PAR-1) which can be helpful for the treatment of thrombotic and vascular proliferative disorders, have also been discussed.
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Affiliation(s)
- Stuti Srivastava
- Medicinal Chemistry Division, Central Drug Research Institute, Lucknow, India
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8
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[3+2] Cycloaddition reactions: a simple entry to the 1-aza-2-oxo-3,4,5,6-tetrahydroxybicyclo[3.3.0]octane ring system. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.06.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Abstract
The majority of pharmaceutically relevant drug targets cluster into densely populated target families, thus offering a novel approach that complements the currently favoured screening paradigm in medicinal chemistry. This approach uses a privileged structure concept whereby molecular masterkeys are developed that account for a target family wide structural or functional commonality. Numerous lead compounds, based on multipurpose privileged structures, can be generated that address a variety of targets from a gene family of interest, irrespective of therapeutic area. Several different interpretations of the privileged structure concept will be highlighted, with a strong emphasis on the most stringent application: the optimization of a molecular masterkey for a distinct target family of interest.
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Affiliation(s)
- Gerhard Müller
- Axxima Pharmaceuticals AG, Max-Lebsche-Platz 32, 81377 Münich, Germany.
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11
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Abstract
Lantana camara L. is regarded both as a notorious weed and a popular ornamental garden plant and has found various uses in folk medicine in many parts of the world. Some taxa of the widely variable L. camara complex are toxic to small ruminants and this effect has been associated with the types and relative amounts of some triterpene ester metabolites. However, L. camara also produces a number of metabolites in good yields and some have been shown to possess useful biological activities. All these aspects are considered in this review to allow an evaluation of the potential for utilisation of the large biomass of Lantana available. The phytochemistry of other members of the Lantana genus is included.
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Affiliation(s)
- E L Ghisalberti
- Department of Chemistry, University of Western Australia, Nedlands, Western Australia 6907, Australia.
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12
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Pass M, Abu-Rabie S, Baxter A, Conroy R, Coote SJ, Craven AP, Finch H, Hindley S, Kelly HA, Lowdon AW, McDonald E, Mitchell WL, Pegg NA, Procopiou PA, Ramsden NG, Thomas R, Walker DA, Watson NS, Jhoti H, Mooney CJ, Tang CM, Thomas PJ, Parry S, Patel C. Thrombin inhibitors based on [5,5] trans-fused indane lactams. Bioorg Med Chem Lett 1999; 9:1657-62. [PMID: 10397495 DOI: 10.1016/s0960-894x(99)00244-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A series of trans-fused lactams containing the indane nucleus has been prepared. Compound 19 has much enhanced plasma stability compared with its lactone counterpart and shows appreciable in vitro anticoagulant activity.
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Affiliation(s)
- M Pass
- Glaxo Wellcome Research and Development, Stevenage, Herts, United Kingdom.
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13
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Pass M, Bolton RE, Coote SJ, Finch H, Hindley S, Lowdon A, McDonald E, McLaren J, Owen M, Pegg NA, Mooney CJ, Tang CM, Parry S, Patel C. Synthetic [5,5] trans-fused indane lactones as inhibitors of thrombin. Bioorg Med Chem Lett 1999; 9:431-6. [PMID: 10091697 DOI: 10.1016/s0960-894x(99)00002-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Synthesis of trans-fused lactones containing the indane nucleus has resulted in a series of potent acylating inhibitors of thrombin. As an example compound 11e has an apparent second order rate constant of 11 x 10(6) M(-1)sec(-1) for the inhibition of thrombin. The anticoagulant activity of these compounds is discussed.
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Affiliation(s)
- M Pass
- Glaxo Wellcome Research and Development, Stevenage, Herts, United Kingdom.
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Chapter 9. Anticoagulants: Thrombin and Factor Xa Inhibitors. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 1999. [DOI: 10.1016/s0065-7743(08)60571-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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