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The hit-to-lead optimization of 1,2,3,4,4a,9a-hexahydro-1H-xanthenes as glucocorticoid receptor antagonists. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.03.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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2
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Shah K, Patel D, Jadav P, Sheikh M, Sairam KVVM, Joharapurkar A, Jain MR, Bahekar R. Discovery of liver selective non-steroidal glucocorticoid receptor antagonist as novel antidiabetic agents. Bioorg Med Chem Lett 2012; 22:5857-62. [PMID: 22917520 DOI: 10.1016/j.bmcl.2012.07.078] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 07/17/2012] [Accepted: 07/24/2012] [Indexed: 11/16/2022]
Affiliation(s)
- Kiran Shah
- Zydus Research Centre, Sarkhej-Bavla N.H. 8A Moraiya, Ahmedabad 382210, India
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3
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Marrodan CM, Berti D, Liguori F, Barbaro P. In situ generation of resin-supported Pd nanoparticles under mild catalytic conditions: a green route to highly efficient, reusable hydrogenation catalysts. Catal Sci Technol 2012. [DOI: 10.1039/c2cy20205k] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Sakai H, Hirano T, Mori S, Fujii S, Masuno H, Kinoshita M, Kagechika H, Tanatani A. 6-arylcoumarins as novel nonsteroidal type progesterone antagonists: an example with receptor-binding-dependent fluorescence. J Med Chem 2011; 54:7055-65. [PMID: 21916484 DOI: 10.1021/jm2005404] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Various 6-arylcoumarin derivatives were designed and synthesized as candidate nonsteroidal type progesterone antagonists. 6-Bromocoumarin derivatives were prepared from the corresponding 4-substituted 2-acetoxy-5-bromobenzaldehyde by employing the Still-Gennari modification of the Horner-Wadsworth-Emmons olefination reaction and were converted to 6-arylcoumarins by means of Suzuki-Miyaura cross-coupling reactions. The biological activities of these coumarin derivatives were evaluated by means of alkaline phosphatase assay in the T47D human breast carcinoma cell line. Among the synthesized compounds, 36 (IC(50) = 0.12 μM) and 38 (IC(50) = 0.065 μM), bearing a five-membered heterocycle, showed potent PR antagonist activity. Competitive binding assay showed that compounds 8 and 34 have potent PR binding affinity. The fluorescence of compound 8 was dependent on the solvent properties and was increased in the presence of PR ligand binding domain. This property might be applicable to the development of fluorescence probes for studies on PR.
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Affiliation(s)
- Haruka Sakai
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
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5
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Pal R, Islam MA, Hossain T, Saha A. Molecular modeling on structure-function analysis of human progesterone receptor modulators. Sci Pharm 2011; 79:461-77. [PMID: 21886897 PMCID: PMC3163366 DOI: 10.3797/scipharm.1105-03] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 06/29/2011] [Indexed: 11/22/2022] Open
Abstract
Considering the significance of progesterone receptor (PR) modulators, the present study is explored to envisage the biophoric signals for binding to selective PR subtype-A using ligand-based quantitative structure activity relationship (QSAR) and pharmacophore space modeling studies on nonsteroidal substituted quinoline and cyclocymopol monomethyl ether derivatives. Consensus QSAR models (Training set (Tr): n(Tr)=100, R(2) (pred)=0.702; test set (Ts): n(Ts)=30, R(2) (pred)=0.705, R(2) (m)=0.635; validation set (Vs): n(Vs)=40, R(2) (pred)=0.715, R(2) (m)=0.680) suggest that molecular topology, atomic polarizability and electronegativity, atomic mass and van der Waals volume of the ligands have influence on the presence of functional atoms (F, Cl, N and O) and consequently contribute significant relations on ligand binding affinity. Receptor independent space modeling study (Tr: n(Tr)=26, Q(2)=0.927; Ts: n(Ts)=60, R(2) (pred)=0.613, R(2) (m)=0.545; Vs: n(Vs)=84, R(2) (pred)=0.611, R(2) (m)=0.507) indicates the importance of aromatic ring, hydrogen bond donor, molecular hydrophobicity and steric influence for receptor binding. The structure-function characterization is adjudged with the receptor-based docking study, explaining the significance of the mapped molecular attributes for ligand-receptor interaction in the catalytic cleft of PR-A.
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Affiliation(s)
- Ria Pal
- Department of Chemical Technology, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, India
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6
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Onnis V, Kinsella GK, Carta G, Jagoe WN, Price T, Williams DC, Fayne D, Lloyd DG. Virtual screening for the identification of novel nonsteroidal glucocorticoid modulators. J Med Chem 2010; 53:3065-74. [PMID: 20334371 DOI: 10.1021/jm901452y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, we describe the first application of ligand-based drug design (LBDD) to the derivation of a predictive pharmacophore for the human glucocorticoid receptor (hGR). Creation of a four feature pharmacophore in Catalyst was subsequently validated through a virtual screen of 264000 commercially available compounds. From a selected hit list of 11 diverse compounds, two nonsteroidal molecules demonstrated low micromolar activity against hGR as validated through fluorescence polarization competitive assay. Additionally, these compounds were tested for their trans-repression potential by their ability to inhibit IL-1 induced, IL-6 expression in the human A549 lung epithelial cell line. Co-treatment of A549 with 21 (MDG169) (10 microM) in combination with dexamethasone showed an improved inhibitory effect when compared to dexamethasone alone with the cooperative effect being dependent on the dexamethasone dose. Putative binding orientations in the hGR ligand binding domain crystal structure are presented. These compounds represent novel nonsteroidal hGR modulating scaffolds, rationally identified through ligand-focused computational modeling.
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Affiliation(s)
- Valeria Onnis
- Molecular Design Group, School of Biochemistry and Immunology, Trinity College Dublin, Dublin 2, Ireland
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7
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Characterization of a novel non-steroidal glucocorticoid receptor antagonist. Biochem Biophys Res Commun 2010; 391:1531-6. [DOI: 10.1016/j.bbrc.2009.12.117] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2009] [Accepted: 12/21/2009] [Indexed: 01/08/2023]
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8
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Progesterone receptor antagonists with a 3-phenylquinazoline-2,4-dione/2-phenylisoquinoline-1,3-dione skeleton. Bioorg Med Chem 2008; 16:7046-54. [DOI: 10.1016/j.bmc.2008.05.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2008] [Revised: 04/21/2008] [Accepted: 05/05/2008] [Indexed: 11/23/2022]
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9
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Kamila S, Khan O, Zhang H, Biehl ER. Synthesis of 4,4‐Disubstituted‐4H‐benzo[d][1,3]oxathiin‐2‐ones, a New Class of Compounds. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397910500522140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Sukanta Kamila
- a Department of Chemistry , Southern Methodist University , Dallas, Texas, USA
| | - Omair Khan
- a Department of Chemistry , Southern Methodist University , Dallas, Texas, USA
| | - Hongming Zhang
- a Department of Chemistry , Southern Methodist University , Dallas, Texas, USA
| | - Edward R. Biehl
- a Department of Chemistry , Southern Methodist University , Dallas, Texas, USA
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10
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Affiliation(s)
- Kotoko Nakata
- AdvanceSoft Corporation /IIS, University of Tokyo, 4-6-1 Komaba, Meguro-ku 770-8505, Japan
| | - Shinji Amari
- Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku 770-8505, Japan
| | - Tatsuya Nakano
- National Institute of Health Sciences, 1-18-1, Setagaya-ku, Tokyo 158-8501, Japan
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11
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Zhi L, Marschke KB. Novel class of non-steroidal progesterone receptor antagonists. Expert Opin Ther Pat 2005. [DOI: 10.1517/13543776.9.6.695] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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12
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Tabata Y, Iizuka Y, Masuda NT, Shinei R, Kurihara KI, Okonogi T, Hoshiko S, Kurata Y. In vitro and in vivo characterization of novel nonsteroidal progesterone receptor antagonists derived from the fungal metabolite PF1092C. J Steroid Biochem Mol Biol 2002; 82:217-23. [PMID: 12477488 DOI: 10.1016/s0960-0760(02)00157-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We studied the pharmacological effects of novel nonsteroidal progesterone receptor antagonists CP8661 and CP8754, which were synthesized from the fungal metabolite PF1092C. CP8661 possess a tetrahydrobenzindolone skeleton and CP8754 possess a tetrahydronaphthofuranone skeleton. In binding assays for steroid receptors, CP8661 and CP8754 inhibited [(3)H]-progesterone binding to human progesterone receptors (hPR), though they are less potent than RU486. CP8661 also showed moderate affinity to rat androgen receptors (rAR), although CP8754 did not. Neither compound showed affinity to human glucocorticoid receptors (hGR) or human estrogen receptors (hER). In exogeneous and endogeneous PR-dependent enzyme expression assays using human mammary carcinoma T47D, CP8661 and CP8754 showed pure antagonistic activity. In a rabbit endometrial transformation test, CP8661 and CP8754 showed anti-progestational activity by s.c. administration in a dose-dependent manner; meanwhile, these compounds showed no progestational activity at the same dose. These results suggested that CP8661 and CP8754 are in vivo effective pure progesterone receptor antagonists and presented the possibility of synthesizing pure progesterone receptor antagonists from both tetrahydronaphthofuranone and tetrahydrobenzindolone skeletons.
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Affiliation(s)
- Yuji Tabata
- Pharmaceutical Research Center, Meiji Seika Kaisha, Ltd., 760 Morooka-cho Kohoku-ku, Yokohama, Japan.
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13
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Zhang P, Terefenko EA, Fensome A, Wrobel J, Winneker R, Lundeen S, Marschke KB, Zhang Z. 6-Aryl-1,4-dihydro-benzo[d][1,3]oxazin- 2-ones: a novel class of potent, selective, and orally active nonsteroidal progesterone receptor antagonists. J Med Chem 2002; 45:4379-82. [PMID: 12238914 DOI: 10.1021/jm025555e] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Novel 6-aryl-1,4-dihydro-benzo[d][1,3]oxazin-2-ones were synthesized and tested as progesterone receptor (PR) antagonists. These compounds were potent and showed good selectivity for PR over other steroid receptors such as the glucocorticoid and androgen receptors (e.g., greater than 80-fold selectivity at PR for 4h). Numerous 6-aryl benzoxazinones (e.g., 4h-j) were active orally in the uterine decidualization and component C3 assays in the rats. In these in vivo models,4h had potencies comparable to mifepristone.
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Affiliation(s)
- Puwen Zhang
- Chemical Sciences, Women's Health Research Institute, Wyeth Research, 500 Arcola Road, Collegeville, Pennsylvania 19426, USA.
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14
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Tabata Y, Iizuka Y, Kashiwa J, Masuda NT, Shinei R, Kurihara K, Okonogi T, Hoshiko S, Kurata Y. Fungal metabolites, PF1092 compounds and their derivatives, are nonsteroidal and selective progesterone receptor modulators. Eur J Pharmacol 2001; 430:159-65. [PMID: 11711027 DOI: 10.1016/s0014-2999(01)01382-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The potential of new nonsteroidal progesterone receptor ligands, the derivatives of PF1092C ((4aR,5R,6R,7S)-6,7-dihydroxy-4a,5,6,7-tetrahydro-3,4a,5-trimethylnaphtho[2,3-b]furan-2(4H)-one) discovered from fungal metabolites, was evaluated. PF1092A ((4aR,5R,6R,7S)-6-acetoxy-7-hydroxy-4a,5,6,7-tetrahydro-3,4a,5-trimethylnaphtho[2,3-b]furan-2(4H)-one) showed good and moderate affinity for porcine and human progesterone receptors in in vitro receptor binding assays, respectively, and partial agonist activity for the progesterone receptor, as determined in assays of two types of progesterone-dependent enzymes in human mammary carcinoma T47D cells. The derivative of PF1092C, CP8481, ((4aR,5R,6R,7S)-6-(2-furancarbonyloxy)-7-hydroxy-4a,5,6,7-tetrahydro-3,4a,5-trimethylnaphtho[2,3-b]furan-2(4H)-one) possessed better affinity for both progesterone receptors and showed less cross-reactivity for other steroid receptors, such as rat androgen receptor, human glucocorticoid receptor, and human estrogen receptor, and was a more potent modulator of the progesterone receptor than PF1092A. CP8400 ((4aR,5R,6R,7S)-6,7-diacetoxy-4a,5,6,7-tetrahydro-3,4a,5-trimethylnaphtho[2,3-b]furan-2(4H)-one) and CP8401 ((4aR,5R,6R,7S)-6,7-dipropionyloxy-4a,5,6,7-tetrahydro-3,4a,5-trimethylnaphtho[2,3-b]furan-2(4H)-one), other derivatives, were indicated to be progesterone receptor antagonists. These results suggest that PF1092 compounds can serve as a new pharmacophore for potent and specific nonsteroidal progesterone receptor modulators.
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Affiliation(s)
- Y Tabata
- Drug Discovery, Pharmaceutical Research Center, Meiji Seika Kaisha, Ltd., 760 Morooka-cho, Yokohama, 222-8567, Kohoku, Japan.
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15
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Blaser HU, Indolese A, Schnyder A, Steiner H, Studer M. Supported palladium catalysts for fine chemicals synthesis. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s1381-1169(01)00143-1] [Citation(s) in RCA: 272] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Palmer S, Campen CA, Allan GF, Rybczynski P, Haynes-Johnson D, Hutchins A, Kraft P, Kiddoe M, Lai M, Lombardi E, Pedersen P, Hodgen G, Combs DW. Nonsteroidal progesterone receptor ligands with unprecedented receptor selectivity. J Steroid Biochem Mol Biol 2000; 75:33-42. [PMID: 11179906 DOI: 10.1016/s0960-0760(00)00134-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We have characterized a series of nonsteroidal progesterone receptor ligands, the tetrahydropyridazines. Compounds in this series, exemplified by RWJ 26819, demonstrate high affinity and unprecedented specificity for the progesterone receptor relative to other steroid hormone receptors. Like steroidal progestins, RWJ 26819 induces binding of the receptor to a progesterone response element in vitro, and stimulates gene expression in and proliferation of T47D human breast cancer cells. When administered to rabbits orally or subcutaneously, the compound induces histological changes in the uterine lining comparable to those induced by levonorgestrel. It also inhibits ovulation in monkeys. Though less potent in cells and in animal models than would be predicted from binding affinity alone, their enhanced selectivity suggests that they could be effectively used in a clinical setting. Most of the tetrahydropyridazines synthesized are progestin agonists or mixed agonists and antagonists in vitro; however, one compound with antagonist activity in the rabbit uterine transformation assay has been identified.
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Affiliation(s)
- S Palmer
- R.W. Johnson Pharmaceutical Research Institute, 1000 Route 202, PO Box 300, Raritan, NJ 08869, USA
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17
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Hansen SH, Jensen AG, Cornett C, Bjørnsdottir I, Taylor S, Wright B, Wilson ID. High-Performance Liquid Chromatography On-Line Coupled to High-Field NMR and Mass Spectrometry for Structure Elucidation of Constituents of Hypericum perforatum L. Anal Chem 1999. [DOI: 10.1021/ac990598x] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Steen Honoré Hansen
- Department of Analytical and Pharmaceutical Chemistry, The Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Department of Safety of Medicines, Zeneca Pharmaceuticals, Macclesfield, UK
| | - Anette Gemal Jensen
- Department of Analytical and Pharmaceutical Chemistry, The Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Department of Safety of Medicines, Zeneca Pharmaceuticals, Macclesfield, UK
| | - Claus Cornett
- Department of Analytical and Pharmaceutical Chemistry, The Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Department of Safety of Medicines, Zeneca Pharmaceuticals, Macclesfield, UK
| | - Inga Bjørnsdottir
- Department of Analytical and Pharmaceutical Chemistry, The Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Department of Safety of Medicines, Zeneca Pharmaceuticals, Macclesfield, UK
| | - Steven Taylor
- Department of Analytical and Pharmaceutical Chemistry, The Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Department of Safety of Medicines, Zeneca Pharmaceuticals, Macclesfield, UK
| | - Brian Wright
- Department of Analytical and Pharmaceutical Chemistry, The Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Department of Safety of Medicines, Zeneca Pharmaceuticals, Macclesfield, UK
| | - Ian D. Wilson
- Department of Analytical and Pharmaceutical Chemistry, The Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100 Copenhagen, Denmark, and Department of Safety of Medicines, Zeneca Pharmaceuticals, Macclesfield, UK
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18
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Ohtake Y, Naito A, Hasegawa H, Kawano K, Morizono D, Taniguchi M, Tanaka Y, Matsukawa H, Naito K, Oguma T, Ezure Y, Tsuriya Y. Novel vasopressin V2 receptor-selective antagonists, pyrrolo[2,1-a]quinoxaline and pyrrolo[2,1-c][1,4]benzodiazepine derivatives. Bioorg Med Chem 1999; 7:1247-54. [PMID: 10428398 DOI: 10.1016/s0968-0896(99)00049-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The intent of the work was to study the structure-activity relationships of AVP receptor antagonists bearing a chiral ring as a partial structure since such studies had been reported for only achiral compounds. In the present paper, we deal with compounds consisting of the chiral tricyclic hetero ring (1,2,3,3a,4,5-hexahydropyrrolo[1,2-a]quinoxaline and 1,2,3,10,11,11a-hexahydro-1H-pyrrolo[2,1-c][1,4]benzodiazepine) and 2-phenylbenzanilide analogues. These compounds exhibited a highly selective affinity for V2 receptor, and their stereochemical configuration had a great influence on V2 receptor binding. VP-343 (N-[4-[[(2S,3aR)-2-hydroxy-2,3,3a,4-tetrahydropyrrolo[1,2-a] quinoxalin-5(1H)-yl]carbonyl]phenyl]-4'-methyl[1,1'-biphenyl]-2-ca rboxamide), VP-365 (N-[4-[[(11aS)-2,3,11,11a-tetrahydro-1H-pyrrolo[2,1-c][1,4]benz odiazepin-10(5H)-yl]carbonyl]phenyl][1,1'-biphenyl-2-carboxamide) and VP-339 (N-[4-[[(11aS)-5-oxo-2,3,11,11a-tetrahydro-1H-pyrrolo[2,1-c][1,4]+ ++benzodiazepin-10(5H)-yl]carbonyl]phenyl][1,1'-biphenyl]-2-carboxami de) were the most potent compounds in vitro and in vivo. The IC50 values of VP-343, VP-365 and VP-339 against V2 receptor were 0.772, 1.18 and 0.216 nM, respectively. The ED300 values (dose required to increase three times the urine volume of the control rats; oral administration) of VP-343, VP-365 and VP-339 were 0.22, 0.31 and 0.78 mg/kg, respectively.
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Affiliation(s)
- Y Ohtake
- Sagami Research Laboratories, Wakamoto Pharmaceutical Co., Ltd., Ashigarakami-gun, Kanagawa, Japan
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19
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Zhi L, Tegley CM, Edwards JP, West SJ, Marschke KB, Gottardis MM, Mais DE, Jones TK. 5-Alkyl 1,2-dihydrochromeno[3,4-f]quinolines: a novel class of nonsteroidal progesterone receptor modulators. Bioorg Med Chem Lett 1998; 8:3365-70. [PMID: 9873735 DOI: 10.1016/s0960-894x(98)00608-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of nonsteroidal human progesterone receptor (hPR) agonists, 5-alkyl 1,2-dihydrochromeno[3,4-f]quinolines, was synthesized and evaluated in cotransfection and competitive receptor binding assays. The 5-alkyl substitution was shown to be responsible for the agonist activity and substitution at C9 dramatically enhanced the potency. A number of analogues in this series showed activities similar to or better than progesterone in the cotransfection and binding assays and analogue 15 exhibited similar in vivo activity as medroxyprogesterone acetate (MPA) in murine uterine wet weight/mammary gland morphology assays.
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Affiliation(s)
- L Zhi
- Department of Medicinal Chemistry, Ligand Pharmaceuticals, Inc., San Diego, CA 92121, USA
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20
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Hamann LG, Winn DT, Pooley CL, Tegley CM, West SJ, Farmer LJ, Zhi L, Edwards JP, Marschke KB, Mais DE, Goldman ME, Jones TK. Nonsteroidal progesterone receptor antagonists based on a conformationally-restricted subseries of 6-aryl-1,2-dihydro-2,2,4-trimethylquinolines. Bioorg Med Chem Lett 1998; 8:2731-6. [PMID: 9873612 DOI: 10.1016/s0960-894x(98)00482-x] [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: 11/19/2022]
Abstract
A series of nonsteroidal human progesterone receptor (hPR) antagonists based on conformationally-restricted analogues of a 6-aryl-1,2-dihydro-2,2,4-trimethylquinoline pharmacophore were synthesized and evaluated for their ability to bind to the human progesterone receptor and inhibit progesterone-stimulated reporter gene expression in mammalian cells.
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Affiliation(s)
- L G Hamann
- Department of Medicinal Chemistry, Ligand Pharmaceuticals, San Diego, CA 92121, USA
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21
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Pooley CL, Edwards JP, Goldman ME, Wang MW, Marschke KB, Crombie DL, Jones TK. Discovery and preliminary SAR studies of a novel, nonsteroidal progesterone receptor antagonist pharmacophore. J Med Chem 1998; 41:3461-6. [PMID: 9719599 DOI: 10.1021/jm9801915] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A series of 6-aryl-1,2-dihydro-2,2,4-trimethylquinolines was synthesized and tested for functional activity on the human progesterone receptor isoform B (hPR-B) in mammalian (CV-1) cells. The lead compound LG001447 (1,2-dihydro-2,2, 4-trimethyl-6-phenylquinoline) was discovered via directed high throughput screening of a defined chemical library utilizing an hPR-B cotransfection assay. Electron-withdrawing substituents at the meta position of the C(6) aryl group afforded substantial improvements in hPR modulatory activity. Several analogues were able to potently block the effects of progesterone in vitro. Two compounds, 10 (LG120753) and 11 (LG120830) with potencies comparable or equal to the steroidal hPR antagonist onapristone (ZK98,299), were demonstrated to act as antiprogestins in vivo after oral administration to rodents. This is the first disclosure of orally active nonsteroidal antiprogestins.
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Affiliation(s)
- C L Pooley
- Department of Medicinal Chemistry, Ligand Pharmaceuticals Inc., San Diego, California 92121, USA.
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22
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Edwards JP, Zhi L, Pooley CL, Tegley CM, West SJ, Wang MW, Gottardis MM, Pathirana C, Schrader WT, Jones TK. Preparation, resolution, and biological evaluation of 5-aryl-1, 2-dihydro-5H-chromeno[3,4-f]quinolines: potent, orally active, nonsteroidal progesterone receptor agonists. J Med Chem 1998; 41:2779-85. [PMID: 9667968 DOI: 10.1021/jm980190c] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Two potent nonsteroidal progestins from the 5-aryl-1, 2-dihydro-5H-chromeno[3,4-f]quinoline class (LG120746 and LG120747) were selected for scale-up, resolution, and biological evaluation of the purified enantiomers. For each quinoline, the levorotatory enantiomer was determined to be the more potent agonist of the human progesterone receptor isoform B (hPR-B) (EC50 < 3 nM), but the dextrorotatory enantiomers retained significant PR modulatory activity (EC50 < 200 nM). In two in vivo rodent models of progestational activity, a pregnancy maintenance assay and a uterine wet weight assay, the two eutomers displayed potent progesterone-like effects. In a third model for progestational activity, the mammary end bud assay, these compounds were significantly less active. These studies demonstrate that certain members of this class of selective progesterone receptor modulators display encouraging and potentially useful tissue-selective progestational effects.
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Affiliation(s)
- J P Edwards
- Departments of Medicinal Chemistry and Endocrine Research, Ligand Pharmaceuticals Inc., San Diego, California 92121, USA.
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23
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Hamann LG, Higuchi RI, Zhi L, Edwards JP, Wang XN, Marschke KB, Kong JW, Farmer LJ, Jones TK. Synthesis and biological activity of a novel series of nonsteroidal, peripherally selective androgen receptor antagonists derived from 1,2-dihydropyridono[5,6-g]quinolines. J Med Chem 1998; 41:623-39. [PMID: 9484511 DOI: 10.1021/jm970699s] [Citation(s) in RCA: 124] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A new nonsteroidal antiandrogenic pharmacophore has been discovered using cell-based cotransfection assays with human androgen receptor (hAR). This series of AR antagonists is structurally characterized by a linear tricyclic 1,2-dihydropyridono[5,6-g]quinoline core. Analogues inhibit AR-mediated reporter gene expression and bind to AR as potently as or better than any known AR antagonists. Several analogues also showed excellent in vivo activity in classic rodent models of AR antagonism, inhibiting growth of rat ventral prostate and seminal vesicles, without accompanying increases in serum gonadotropin and testosterone levels, as is seen with other AR antagonists. Investigations of structure-activity relationships surrounding this pharmacophore resulted in molecules with complete specificity for AR, antagonist activity on an AR mutant commonly observed in prostate cancer patients, and improved in vivo efficacy. Molecules based on this series of compounds have the potential to provide unique and effective clinical opportunities for treatment of prostate cancer and other androgen-dependent diseases.
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Affiliation(s)
- L G Hamann
- Department of Medicinal Chemistry, Ligand Pharmaceuticals, Inc., San Diego, California 92121, USA.
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24
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Edwards JP, West SJ, Marschke KB, Mais DE, Gottardis MM, Jones TK. 5-Aryl-1,2-dihydro-5H-chromeno[3,4-f]quinolines as potent, orally active, nonsteroidal progesterone receptor agonists: the effect of D-ring substituents. J Med Chem 1998; 41:303-10. [PMID: 9464361 DOI: 10.1021/jm9705770] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Several 5-(4-chlorophenyl)-1,2-dihydro-5H-chromeno[3,4-f]quinolines were prepared to determine the effects of substitution at C(8) and C(9) on the progestational activity of this pharmacophore. In combination with a halogen (F or Cl) at C(9), replacement of the C(5) aryl group with variously substituted aryl groups resulted in optimization of the progestational activity, affording compounds with in vitro activity greater than that of progesterone as measured by a cotransfection assay using human progesterone receptor subtype-B (hPR-B). Binding affinities (Ki) to hPR-A were subnanomolar in many cases. These in vitro effects were verified in vivo using a rodent model. Compound 10 (LG120794, 9-chloro-5-(4-chlorophenyl)-1,2-dihydro-2,2,4-trimethyl-5H-chromeno++ +[3,4-f] quinoline) was more potent than medroxyprogesterone acetate at counterpoising the effects of estradiol benzoate in the uterine wet weight assay using immature rats.
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Affiliation(s)
- J P Edwards
- Department of Medicinal Chemistry, Ligand Pharmaceuticals, Inc., San Diego, California 92121, USA.
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25
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Zhi L, Tegley CM, Kallel EA, Marschke KB, Mais DE, Gottardis MM, Jones TK. 5-Aryl-1,2-dihydrochromeno[3,4-f]quinolines: a novel class of nonsteroidal human progesterone receptor agonists. J Med Chem 1998; 41:291-302. [PMID: 9464360 DOI: 10.1021/jm9705768] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The development of a novel class of nonsteroidal human progesterone receptor (hPR) agonists, 5-aryl-1,2-dihydro-5H-chromeno[3,4-f]quinolines 2, is described. The introduction of a 5-aryl group into the 1,2-dihydrocoumarino[3,4-f]quinoline core 1 is the key for progestational activities. The structure-activity relationship (SAR) studies of the 5-aryl substituents generated a series of potent hPR agonists, which exhibited similar biological activity (EC50 = 8-30 nM) to the natural hormone progesterone (EC50 = 2.9 nM) in cell-based assays with efficacies ranging from 28% to 96%. Most of the analogues displayed similar or greater binding affinity (Ki = 0.41-3.6 nM) than progesterone (Ki = 3.5 nM). Three representative analogues (13, 15, and 24) demonstrated in vivo activities in mammary gland morphology/uterine wet weight assay in ovariectomized rats.
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MESH Headings
- Animals
- Binding, Competitive
- Female
- Humans
- In Vitro Techniques
- Magnetic Resonance Spectroscopy
- Mammary Glands, Animal/drug effects
- Mammary Glands, Animal/metabolism
- Quinolines/chemistry
- Quinolines/metabolism
- Quinolines/pharmacology
- Rats
- Rats, Sprague-Dawley
- Receptors, Androgen/metabolism
- Receptors, Estrogen/metabolism
- Receptors, Glucocorticoid/metabolism
- Receptors, Mineralocorticoid/metabolism
- Receptors, Progesterone/agonists
- Receptors, Progesterone/metabolism
- Structure-Activity Relationship
- Uterus/drug effects
- Uterus/metabolism
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Affiliation(s)
- L Zhi
- Department of Medicinal Chemistry, Ligand Pharmaceuticals, Inc., San Diego, California 92121, USA.
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26
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Connolly PJ, Wetter SK, Beers KN, Hamel SC, Haynes-Johnson D, Kiddoe M, Kraft P, Tsann Lai M, Campen C, Palmer S, Phillips A. Synthesis and progesterone receptor binding affinity of substituted 1-phenyl-7-benzyl-4,5,6,7-tetrahydro-1-indazoles. Bioorg Med Chem Lett 1997. [DOI: 10.1016/s0960-894x(97)10016-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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