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Zhang T, Bandero V, Corcoran C, Obaidi I, Ruether M, O'Brien J, O'Driscoll L, Frankish N, Sheridan H. Design, synthesis and biological evaluation of a novel bioactive indane scaffold 2-(diphenylmethylene)c-2,3-dihydro-1H-inden-1-one with potential anticancer activity. Eur J Pharm Sci 2023; 188:106529. [PMID: 37459901 DOI: 10.1016/j.ejps.2023.106529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 06/23/2023] [Accepted: 07/14/2023] [Indexed: 07/23/2023]
Abstract
Over the past decades, designing of privileged structures has emerged as a useful approach to the discovery and optimisation of novel biologically active molecules, and many have been successfully exploited across and within different target families. Examples include indole, quinolone, isoquinoline, benzofuran and chromone, etc. In the current study, we focus on synthesising a novel hybrid scaffold constituting naturally occurring benzophenone (14) and indanone (22) ring systems, leading to a general structure of 2-(diphenylmethylene)-2,3-dihydro-1H-inden-1-one (23). It was hypothesised this new hybrid system would provide enhanced anti-cancer activity owing to the presence of the common features associated with the tubulin binding small molecule indanocine (10) and the estrogen receptor (ER) antagonist tamoxifen (24). Key hybrid molecules were successfully synthesised and characterised, and the in vitro cytotoxicity assays were performed against cancer cell lines: MCF7 (breast) and SKBR3 (breast), DU145 (prostate) and A549 (lung). The methyl-, chloro- and methoxy-, para-substituted benzophenone hybrids displayed the greatest degree of cytotoxicity and the E-configuration derivatives 45, 47 and 49 being significantly most potent. We further verified that the second benzyl moiety of this novel hybrid scaffold is fundamental to enhance the cytotoxicity, especially in the SKBR3 (HER2+) by the E-methyl lead molecule 47, MCF7 (ER+) by 45 and 49, and A549 (NSCLC) cell lines by 49. These hybrid molecules also showed a significant accumulation of SKBR3 cells at S-phase of the cell cycle after 72 hrs, which demonstrates besides of being cytotoxic in vitro against SKBR3 cells, 47 disturbs the replication and development of this type of cancer causing a dose-dependent cell cycle arrest at S-phase. Our results suggest that DNA damage might be involved in the induction of SKBR3 cell death caused by the hybrid molecules, and therefore, this novel system may be an effective suppressor of HER2+/Neu-driven cancer growth and progression. The present study points to potential structural optimisation of the series and encourages further focussed investigation of analogues of this scaffold series toward their applications in cancer chemoprevention or chemotherapy.
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Affiliation(s)
- Tao Zhang
- School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, D07 ADY7, Ireland; The Trinity Centre for Natural Products Research (NatPro), School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, D02 PN40, Ireland; Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, D02 PN40, Ireland.
| | - Vilmar Bandero
- Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, D02 PN40, Ireland.
| | - Claire Corcoran
- Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, D02 PN40, Ireland.
| | - Ismael Obaidi
- The Trinity Centre for Natural Products Research (NatPro), School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, D02 PN40, Ireland; College of Pharmacy, University of Babylon, Babylon, Iraq.
| | - Manuel Ruether
- School of Chemistry, Trinity College Dublin, Dublin 2, Ireland.
| | - John O'Brien
- School of Chemistry, Trinity College Dublin, Dublin 2, Ireland.
| | - Lorraine O'Driscoll
- Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, D02 PN40, Ireland.
| | - Neil Frankish
- Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, D02 PN40, Ireland.
| | - Helen Sheridan
- The Trinity Centre for Natural Products Research (NatPro), School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, D02 PN40, Ireland; Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, D02 PN40, Ireland.
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Pinedo-Rivilla C, Moraga J, Pérez-Sasián G, Peña-Hernández A, G. Collado I, Aleu J. Biocatalytic Preparation of Chloroindanol Derivatives. Antifungal Activity and Detoxification by the Phytopathogenic Fungus Botrytis cinerea. PLANTS 2020; 9:plants9121648. [PMID: 33255810 PMCID: PMC7759767 DOI: 10.3390/plants9121648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 11/16/2022]
Abstract
Indanols are a family of chemical compounds that have been widely studied due to their broad range of biological activity. They are also important intermediates used as synthetic precursors to other products with important applications in pharmacology. Enantiomerically pure chloroindanol derivatives exhibiting antifungal activity against the phytopathogenic fungus Botrytis cinerea were prepared using biocatalytic methods. As a result of the biotransformation of racemic 6-chloroindanol (1) and 5-chloroindanol (2) by the fungus B. cinerea, the compounds anti-(+)-6-chloroindan-1,2-diol (anti-(+)-7), anti-(+)-5-chloroindan-1,3-diol (anti-(+)-8), syn-(+)-5-chloroindan-1,3-diol (syn-(+)-8), syn-(-)-5-chloroindan-1,3-diol (syn-(-)-8), and anti-(+)-5-chloroindan-1,2-diol (anti-(+)-9) were isolated for the first time. These products were characterized by spectroscopic techniques and their enantiomeric excesses studied by chromatographic techniques. The results obtained in the biotransformation seem to suggest that the fungus B. cinerea uses oxidation reactions as a detoxification mechanism.
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Affiliation(s)
- Cristina Pinedo-Rivilla
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (C.P.-R.); (J.M.); (G.P.-S.); (A.P.-H.); (I.G.C.)
| | - Javier Moraga
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (C.P.-R.); (J.M.); (G.P.-S.); (A.P.-H.); (I.G.C.)
- Departamento de Biomedicina, Biotecnología y Salud Pública, Área de Microbiología, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain
| | - Guillermo Pérez-Sasián
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (C.P.-R.); (J.M.); (G.P.-S.); (A.P.-H.); (I.G.C.)
| | - Alba Peña-Hernández
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (C.P.-R.); (J.M.); (G.P.-S.); (A.P.-H.); (I.G.C.)
| | - Isidro G. Collado
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (C.P.-R.); (J.M.); (G.P.-S.); (A.P.-H.); (I.G.C.)
| | - Josefina Aleu
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Cádiz, Puerto Real, 11510 Cádiz, Spain; (C.P.-R.); (J.M.); (G.P.-S.); (A.P.-H.); (I.G.C.)
- Correspondence: ; Tel.: +34-956-012747
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Chan K, Frankish N, Zhang T, Ece A, Cannon A, O'Sullivan J, Sheridan H. Bioactive indanes: insight into the bioactivity of indane dimers related to the lead anti-inflammatory molecule PH46A. J Pharm Pharmacol 2020; 72:927-937. [PMID: 32301120 PMCID: PMC7497186 DOI: 10.1111/jphp.13269] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 03/14/2020] [Indexed: 12/30/2022]
Abstract
Objectives PH46A (1) demonstrates significant anti-inflammatory activity in phenotypic models but its mechanism and site of action have been elusive. Current study focused on the bioactivity of PH46 (2) and related novel indane dimers (6-10) to investigate the impact of changes in substitution and stereochemistry at the C-1 and C-2 positions of the PH46 (2) scaffold. Methods Cytotoxicity profiles of compounds were established using THP-1 macrophages and SW480 cells. Effects of the compounds were then evaluated at 10 µm using 5-lipoxygenase (LOX) and 15-LOX enzymes, and 5-LOX binding was evaluated in silico against NDGA, nitric oxide (NO) released from LPS-induced SW480 cells and cytokines in THP-1 macrophages (IL-6, IL-1β, TNF-α and IFN-γ) and in SW480 cells (IL-8). Key findings PH46 (2) and 7 cause reduction in NO, inhibition of 5-LOX with high binding energy and no cytotoxicity effects in THP-1 macrophages and SW480 cell lines (up to 50 µm). The cytokine profiling of the series demonstrated inhibition of IL-6 and TNF-α in THP-1 macrophages together with IL-8 in SW480 cells. Conclusions The observed profile of cytokine modulation (IL-6/ TNF-α, IL-8) and inhibition of release of NO and 5-LOX may contribute to the in vivo effects demonstrated by indane dimers and PH46A (1) in murine models of colitis.
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Affiliation(s)
- Kit Chan
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, Dublin 2, Ireland
| | - Neil Frankish
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, Dublin 2, Ireland
| | - Tao Zhang
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, Dublin 2, Ireland.,School of Food Science and Environmental Health, Technological University Dublin, Dublin 1, Ireland
| | - Abdulilah Ece
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Biruni University, Topkapi-Istanbul, Turkey
| | - Aoife Cannon
- Department of Surgery, School of Medicine, Trinity Translation Medicine Institute (TTMI), St James's Hospital, Dublin 8, Ireland
| | - Jacintha O'Sullivan
- Department of Surgery, School of Medicine, Trinity Translation Medicine Institute (TTMI), St James's Hospital, Dublin 8, Ireland
| | - Helen Sheridan
- School of Pharmacy and Pharmaceutical Sciences and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, Dublin 2, Ireland
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Scalabrino GA, Zhang T, Frankish N, Sheridan H. Bioactive indanes: Development and validation of an LC-MS/MS bioanalytical method for the determination of PH46A, a new potential anti-inflammatory agent, in dog and rat plasma and its application to a pharmacokinetic study in dog. J Pharm Biomed Anal 2020; 179:113011. [PMID: 31835124 PMCID: PMC6983930 DOI: 10.1016/j.jpba.2019.113011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 11/22/2019] [Accepted: 11/24/2019] [Indexed: 11/18/2022]
Abstract
Selective and sensitive determination by LC—MS/MS of PH46A, a new class of antiinflammation agent, in preclinical animal plasma. Full development and validation of the LC—MS/MS method in two preclinical species. A pharmacokinetic study of PH46A in dog using the method developed.
A new chemical entity, which is a chiral indane dimer, PH46A, has been developed by our research group. As a clinical candidate. PH46A has recently completed Phase I clinical studies in man. Previously, during its pre-clinical development, in in vivo pre-clinical studies PH46A showed potent anti-inflammatory properties, which can be targeted at a range of diseases, including inflammatory bowel disease (IBD). To support the pre-clinical development of this drug candidate, we developed a LC—MS/MS method for determining PH46 (the acid form of PH46A salt) in both dog and rat plasma using Compound 1 as internal standard (IS). Those species were selected for safety pharmacology and toxicology, as well as pharmacokinetics studies. The method was validated over the range 10−10000 ng/mL for both matrices and the linearity, accuracy, precision and specificity over this range were demonstrated to be acceptable. No significant matrix effects or carryover were observed for both PH46 and IS and recovery was consistent. PH46 was found to be stable in both dog and rat plasma under the test conditions, such as at room temperature for >24 h, through 3 freeze/thaw cycles, and at -20 °C for >1 month. PH46 and IS in dog and rat plasma extracts were also found to be stable in the autosampler against fresh standard extracts on re-injection after 143.5 h and 243.5 h, respectively at 4 °C. 10- and 100-fold dilutions with control matrix were found not to affect the performance of the assay. This method was successfully applied to a pharmacokinetic study in the dog. With the exception of one dog, 003 M, oral administration of PH46A in gelatine capsules was well tolerated at a dose level of 100 mg/kg. The highest Cmax was observed in animal 003 M. The rapid absorption and high plasma concentration observed for animal 003 M compared to the data for animals 001 M and 002 M may account for the sickness observed in this animal; however, the reasons for this have not been investigated.
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Affiliation(s)
- Gaia A Scalabrino
- Trino Therapeutics Ltd, The Tower, Trinity Technology and Enterprise Campus, Dublin 2, Ireland
| | - Tao Zhang
- Trino Therapeutics Ltd, The Tower, Trinity Technology and Enterprise Campus, Dublin 2, Ireland; School of Food Science and Environmental Health, City Campus, Technological University Dublin, Dublin 1, Ireland
| | - Neil Frankish
- Trino Therapeutics Ltd, The Tower, Trinity Technology and Enterprise Campus, Dublin 2, Ireland; Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences & Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland.
| | - Helen Sheridan
- Trino Therapeutics Ltd, The Tower, Trinity Technology and Enterprise Campus, Dublin 2, Ireland; Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences & Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland.
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César da Silva R, Veiga F, Vilela FC, Pereira AV, Tavares da Silva Cunha T, Tesch R, Viegas C, Dias DF, Giusti-Paiva A, Veloso MP, Fraga CAM. Design, Synthesis and Pharmacological Evaluation of Novel Antiinflammatory and Analgesic O-Benzyloxime Compounds Derived From Natural Eugenol. LETT DRUG DES DISCOV 2019. [DOI: 10.2174/1570180815666180620145609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background: :
A new series of O-benzyloximes derived from eugenol was synthesized
and was evaluated for its antinociceptive and anti-inflammatory properties.
Methods: :
The target compounds were obtained in good global 25-28% yields over 6 steps, which
led us to identify compounds (Z)-5,6-dimethoxy-2,2-dimethyl-2,3-dihydro-1H-inden-1-one-O-(4-
(methylthio)benzyloxime (8b), (Z)-5,6-dimethoxy-2,2-dimethyl-2,3-dihydro-1H-inden-1-one-O-4-
bromobenzyloxime (8d) and (Z)-5,6-dimethoxy-2,2-dimethyl-2,3-dihydro-1H-inden-1-one-O-4-
(methylsulfonyl)benzyloxime (8f) as promising bioactive prototypes.
Results::
These compounds have significant analgesic and anti-inflammatory effects, as evidenced
by formalin-induced mice paw edema and carrageenan-induced mice paw edema tests. In the formalin
test, compounds 8b and 8f evidenced both anti-inflammatory and direct analgesic activities
and in the carrageenan-induced paw edema, with compounds 8c, 8d, and 8f showing the best inhibitory
effects, exceeding the standard drugs indomethacin and celecoxib.
Conclusion: :
Molecular docking studies have provided additional evidence that the pharmacological
profile of these compounds may be related to inhibition of COX enzymes, with slight preference for
COX-1. These results led us to identify the new O-benzyloxime ethers 8b, 8d and 8f as orally bioactive
prototypes, with a novel structural pattern capable of being explored in further studies aiming at
their optimization and development as drug candidates.
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Affiliation(s)
- Rodrigo César da Silva
- Laboratório de Fitoquímica e Química Medicinal (LFQM), Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil
| | - Fabiano Veiga
- Laboratório de Fitoquímica e Química Medicinal (LFQM), Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil
| | - Fabiana Cardoso Vilela
- Laboratório de Fisiologia, Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil
| | - André Victor Pereira
- Laboratório de Pesquisa em Química Farmacêutica (LQFar), Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil
| | - Thayssa Tavares da Silva Cunha
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, PO Box 68023, 21941-902, Rio de Janeiro, RJ, Brazil
| | - Roberta Tesch
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, PO Box 68023, 21941-902, Rio de Janeiro, RJ, Brazil
| | - Claudio Viegas
- Programa de Pós-Graduação em Química, Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil
| | - Danielle Ferreira Dias
- Laboratório de Fitoquímica e Química Medicinal (LFQM), Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil
| | - Alexandre Giusti-Paiva
- Laboratório de Fisiologia, Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil
| | - Marcia Paranho Veloso
- Laboratório de Pesquisa em Química Farmacêutica (LQFar), Universidade Federal de Alfenas, 37130-000, Alfenas, MG, Brazil
| | - Carlos Alberto Manssour Fraga
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, PO Box 68023, 21941-902, Rio de Janeiro, RJ, Brazil
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Plaza M, Paraja M, Florentino L, Valdés C. Domino Synthesis of Benzo-Fused β,γ-Unsaturated Ketones from Alkenylboronic Acids and N-Tosylhydrazone-Tethered Benzonitriles. Org Lett 2019; 21:632-635. [DOI: 10.1021/acs.orglett.8b03705] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Manuel Plaza
- Departamento de Química Orgánica e Inorgánica and Instituto Universitario de Química Organometálica “Enrique Moles”, Universidad de Oviedo, c/Julián Clavería 8, Oviedo 33006, Spain
| | - Miguel Paraja
- Departamento de Química Orgánica e Inorgánica and Instituto Universitario de Química Organometálica “Enrique Moles”, Universidad de Oviedo, c/Julián Clavería 8, Oviedo 33006, Spain
| | - Lucía Florentino
- Departamento de Química Orgánica e Inorgánica and Instituto Universitario de Química Organometálica “Enrique Moles”, Universidad de Oviedo, c/Julián Clavería 8, Oviedo 33006, Spain
| | - Carlos Valdés
- Departamento de Química Orgánica e Inorgánica and Instituto Universitario de Química Organometálica “Enrique Moles”, Universidad de Oviedo, c/Julián Clavería 8, Oviedo 33006, Spain
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Bioactive Indanes: Proof of Concept Study for Enantioselective Synthetic Routes to PH46A, a New Potential Anti-Inflammatory Agent. Molecules 2018; 23:molecules23071503. [PMID: 29933592 PMCID: PMC6099954 DOI: 10.3390/molecules23071503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 06/17/2018] [Accepted: 06/18/2018] [Indexed: 11/28/2022] Open
Abstract
PH46A is a single enantiomer and a member of the 1,2-indane dimer family. It has two contiguous stereogenic centers with S,S configurations, one of which being a quaternary center, which has been developed as a clinical candidate for the treatment of inflammatory and autoimmune conditions. The current synthetic route to PH46A involves the generation of an unwanted enantiomer (R,R)-7, thus reducing the final yield significantly. Therefore, we have investigated potential alternatives to improve the efficiency of this synthesis. The first phase of the study has demonstrated proof of principle for a chiral alkylation of ketone 3 using phase-transfer catalysis, providing a key intermediate ketone (S)-4. The parent alkaloids required for the synthesis of PH46A, quinine or cinchonidine, have also been identified. Promising enantiomeric excesses of up to 50% have been achieved to date, and the use of an alternative substrate, unsaturated ketone 9, has also opened up further avenues for optimisation in future studies. The second part of the study involved preliminary screening the effects of a panel of hydrolase enzymes on (rac)-4 in order to identify a potential chemo-enzymatic route to optimise the introduction of chirality into PH46A at early stage of the synthesis. The hydrolase module has also yielded positive results; enzyme AH-46 with MtBE providing a selectivity factor of 8.4 with enantiomeric excess of 77%. Overall, positive results were obtained in this proof of concept study described herein. It is believed that conditions of both chiral PTC alkylation and biocatalytic hydrolysis could be optimised to further enhance the selectivity and improve the overall yield. This work is currently ongoing.
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Singh J, Shah R, Singh D, Jaggi AS, Singh N. Design, synthesis, and biological evaluation of 2-substituted-2,3,4,9-tetrahydrospiro-β-carboline-3-carboxylic acid derivatives as first-in-class mast cell stabilizers. Arch Pharm (Weinheim) 2018; 351:e1800019. [PMID: 29644714 DOI: 10.1002/ardp.201800019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 03/19/2018] [Accepted: 03/19/2018] [Indexed: 11/08/2022]
Abstract
Mast cell degranulation plays a momentous role in myriad diseases like asthma, eczema, allergic rhinitis, and conjunctivitis as well as anaphylactic shock; hence, there is an unmet need for developing new mast cells stabilizers. The reported mast cell stabilizers have a heterocyclic moiety and an acidic group. Furthermore, the role of tryptophan in suppression of mast cell activation is established. Hence, we prepared constrained analogs of tryptophan, which are derivatives of 2,3,4,9-tetrahydrospiro-β-carboline-3-carboxylic acid, and evaluated them for ex vivo inhibition of compound 48/80-induced mast degranulation activity. By comparing IC50 (μM) values with that of the standard drug sodium cromoglycate (IC50 = 0.489 ± 0.003 μM), compounds with bulky groups like heptyl (compound 9; IC50 = 0.389 ± 0.015 μM) and octyl (compound 10; IC50 = 0.354 ± 0.023 μM) were found to be of similar potency as sodium cromoglycate. Furthermore, the polar group-containing compounds like the chloropropyl (compound 16; IC50 = 0.382 ± 0.083 μM) and benzoyl derivative (compound 14; IC50 = 00.469 ± 0.032 μM) were also found to be of similar potency as sodium cromoglycate. This is a seminal study of spiro-β-carboline mast cell stabilization having a wider scope in mast cell research; yet, the mechanism of action remains elusive.
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Affiliation(s)
- Jatinder Singh
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Ramanpreet Shah
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Dhandeep Singh
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Amteshwar S Jaggi
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
| | - Nirmal Singh
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
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Frankish NH, McHale B, Sheridan H. The indane diastereoisomers, PH2 and PH5: divergence between their effects in delayed-type hypersensitivity models and a model of colitis. ACTA ACUST UNITED AC 2017; 70:101-110. [PMID: 29057517 PMCID: PMC5887892 DOI: 10.1111/jphp.12846] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 08/26/2017] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Compounds PH2 and PH5 are distereoisomers of novel indane compounds, synthesised as analogues of secondary metabolites of the fern, Onychium. In this study, we compare their effects on a variety of inflammatory models. METHODS In an effort to extend our knowledge of their anti-inflammatory profile, we have investigated their activity in two models of delayed-type hypersensitivity (DTH); the methylated bovine serum albumin model (mBSA) and the oxazolone contact hypersensitivity (CHS) model, on IL2 release from Jurkat cells and in the dextran sulphate sodium (DSS) murine model of inflammatory bowel disease. KEY FINDINGS Both diastereoisomers are equipotent in reducing paw swelling in the mBSA model and in inhibiting interleukin (IL) 2 release from Jurkat cells. They are equally ineffective in the oxazolone contact hypersensitivity model (CHS). Only the diastereoisomer, PH5, protects against DSS-induced colitis and of its two enantiomers, only the S,S-enantiomer, PH22, possesses this activity. PH2 is ineffective in the DSS model. CONCLUSIONS The results suggest that the beneficial effect of PH5, and its enantiomer PH22, in the DSS model is a consequence of an action on a target specific to the colitis model. The implications of such data suggest an unknown target in this disease model that may be exploited to therapeutic advantage.
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Affiliation(s)
- Neil H Frankish
- School of Pharmacy and Pharmaceutical Technology, Trinity College Dublin, Dublin, Ireland
| | - Brendan McHale
- MSD, Red Oak North, South County Business Park, Leopardstown, Dublin, Ireland
| | - Helen Sheridan
- School of Pharmacy and Pharmaceutical Technology, Trinity College Dublin, Dublin, Ireland
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Zhang T, Finn DF, Barlow JW, Walsh JJ. Mast cell stabilisers. Eur J Pharmacol 2015; 778:158-68. [PMID: 26130122 DOI: 10.1016/j.ejphar.2015.05.071] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 05/05/2015] [Accepted: 05/17/2015] [Indexed: 01/18/2023]
Abstract
Mast cells play a critical role in type 1 hypersensitivity reactions. Indeed, mast cell mediators are implicated in many different conditions including allergic rhinitis, conjunctivitis, asthma, psoriasis, mastocytosis and the progression of many different cancers. Thus, there is intense interest in the development of agents which prevent mast cell mediator release or which inhibit the actions of such mediators once released into the environment of the cell. Much progress into the design of new agents has been made since the initial discovery of the mast cell stabilising properties of khellin from Ammi visnaga and the clinical approval of cromolyn sodium. This review critically examines the progress that has been made in the intervening years from the design of new agents that target a specific signalling event in the mast cell degranulation pathway to those agents which have been developed where the precise mechanism of action remains elusive. Particular emphasis is also placed on clinically used drugs for other indications that stabilise mast cells and how this additional action may be harnessed for their clinical use in disease processes where mast cells are implicated.
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Affiliation(s)
- Tao Zhang
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Deirdre Frances Finn
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - James William Barlow
- Department of Pharmaceutical & Medicinal Chemistry, Royal College of Surgeons in Ireland, Stephens Green, Dublin 2, Ireland
| | - John Jarlath Walsh
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland.
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11
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Zhang T, Paluch K, Scalabrino G, Frankish N, Healy AM, Sheridan H. Molecular structure studies of (1 S,2 S)-2-benzyl-2,3-dihydro-2-(1H-inden-2-yl)-1H-inden-1-ol. J Mol Struct 2015; 1083:286-299. [PMID: 25750458 PMCID: PMC4308634 DOI: 10.1016/j.molstruc.2014.12.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 12/03/2014] [Accepted: 12/03/2014] [Indexed: 11/30/2022]
Abstract
Chemical separation is used for racemate resolution. NMR analyses are used for single enantiomer structure education. Intermolecular interactions are observed by X-ray study.
The single enantiomer (1S,2S)-2-benzyl-2,3-dihydro-2-(1H-inden-2-yl)-1H-inden-1-ol (2), has recently been synthesized and isolated from its corresponding diastereoisomer (1). The molecular and crystal structures of this novel compound have been fully analyzed. The relative and absolute configurations have been determined by using a combination of analytical tools including X-ray crystallography, X-ray Powder Diffraction (XRPD) analysis and Nuclear Magnetic Resonance (NMR) spectroscopy.
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Affiliation(s)
- Tao Zhang
- Trino Therapeutics Ltd, The Tower, Trinity Technology and Enterprise Campus, Dublin 2, Ireland ; Novel Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences & Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland
| | - Krzysztof Paluch
- Centre for Pharmaceutical Engineering Science, Bradford School of Pharmacy, Faculty of Life Sciences, University of Bradford, Richmond Road, Bradford BD7 1DP, UK
| | - Gaia Scalabrino
- Trino Therapeutics Ltd, The Tower, Trinity Technology and Enterprise Campus, Dublin 2, Ireland
| | - Neil Frankish
- Trino Therapeutics Ltd, The Tower, Trinity Technology and Enterprise Campus, Dublin 2, Ireland ; Novel Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences & Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland
| | - Anne-Marie Healy
- Novel Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences & Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland
| | - Helen Sheridan
- Trino Therapeutics Ltd, The Tower, Trinity Technology and Enterprise Campus, Dublin 2, Ireland ; Novel Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences & Trinity Biomedical Sciences Institute, Trinity College, Dublin 2, Ireland
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12
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Zhu YP, Cai Q, Jia FC, Liu MC, Gao QH, Meng XG, Wu AX. Electronic tuning cyclization of aryl-1,4-enediones: AlCl3-mediated Nazarov-type cyclization to synthesize polysubstituted-1-indanones. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.052] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Finn DF, Walsh JJ. Twenty-first century mast cell stabilizers. Br J Pharmacol 2014; 170:23-37. [PMID: 23441583 DOI: 10.1111/bph.12138] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 01/30/2013] [Accepted: 02/13/2013] [Indexed: 12/14/2022] Open
Abstract
Mast cell stabilizing drugs inhibit the release of allergic mediators from mast cells and are used clinically to prevent allergic reactions to common allergens. Despite the relative success of the most commonly prescribed mast cell stabilizer, disodium cromoglycate, in use for the preventative treatment of bronchial asthma, allergic conjunctivitis and vernal keratoconjunctivitis, there still remains an urgent need to design new substances that are less expensive and require less frequent dosing schedules. In this regard, recent developments towards the discovery of the next generation of mast cell stabilizing drugs has included studies on substances isolated from natural sources, biological, newly synthesized compounds and drugs licensed for other indications. The diversity of natural products evaluated range from simple phenols, alkaloids, terpenes to simple amino acids. While in some cases their precise mode of action remains unknown it has nevertheless sparked interest in the development of synthetic derivatives with improved pharmacological properties. Within the purely synthetic class of inhibitors, particular attention has been devoted to the inhibition of important signalling molecules including spleen TK and JAK3. The statin class of cholesterol-lowering drugs as well as nilotinib, a TK inhibitor, are just some examples of clinically used drugs that have been evaluated for their anti-allergic properties. Here, we examine each approach under investigation, summarize the test data generated and offer suggestions for further preclinical evaluation before their therapeutic potential can be realized.
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Affiliation(s)
- D F Finn
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Ireland
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14
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Formation of Hydroxyindenyl and Vinylidene Ligands by Reaction of Internal Alkynes with Cp*Fe(CO)(NCMe)Ph. Organometallics 2014. [DOI: 10.1021/om500748v] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Tisovský P, Mečiarová M, Šebesta R. Asymmetric organocatalytic SOMO reactions of enol silanes and silyl ketene (thio)acetals. Org Biomol Chem 2014; 12:9446-52. [DOI: 10.1039/c4ob01385a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of aldehydes and ketones in asymmetric organo-SOMO reactions with enol silanes was explored. The best results were obtained with 3-phenylpropanal and tetralone-derived silyl enol ether and silyl ketene thioacetal.
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Affiliation(s)
- Pavol Tisovský
- Department of Organic Chemistry
- Faculty of Natural Sciences
- Comenius University in Bratislava
- Bratislava, Slovakia
| | - Mária Mečiarová
- Department of Organic Chemistry
- Faculty of Natural Sciences
- Comenius University in Bratislava
- Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry
- Faculty of Natural Sciences
- Comenius University in Bratislava
- Bratislava, Slovakia
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16
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Zhang T, Bandero V, McCabe T, Frankish N, Sheridan H. 2-(Di-phenyl-methyl-idene)-2,3-di-hydro-1H-inden-1-one. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1306-o1307. [PMID: 24109382 PMCID: PMC3793795 DOI: 10.1107/s1600536813018990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 07/09/2013] [Indexed: 06/02/2023]
Abstract
In the title mol-ecule, C22H16O, the indanone ring system is approximately planar with a dihedral angle between the fused rings of 5.13 (14)°. Two benzene rings are linked together at one side of a double bond, sitting on either side of the indanone ring system and making dihedral angles of 70.30 (12) and 44.74 (13)° with it. In the crystal, hydrogen bonding is not present, but weak C-H⋯π or π-π inter-actions occur and mol-ecules form a sheet-like structure in the bc plane.
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Affiliation(s)
- Tao Zhang
- Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Vilmar Bandero
- Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Tom McCabe
- School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Neil Frankish
- Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Helen Sheridan
- Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland
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17
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Frampton CS, Zhang T, Scalabrino GA, Frankish N, Sheridan H. (1S)-1-Phenylethanaminium 4-{[(1S,2S)-1-hydroxy-2,3-dihydro-1H,1'H-[2,2'-biinden]-2-yl]methyl}benzoate. Acta Crystallogr C 2012; 68:o323-6. [PMID: 22850861 DOI: 10.1107/s0108270112031265] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Accepted: 07/09/2012] [Indexed: 11/10/2022] Open
Abstract
The title molecular salt, C(8)H(12)N(+)·C(26)H(21)O(3)(-), contains a dimeric indane pharmacophore that demonstrates potent anti-inflammatory activity. The indane group of the anion exhibits some disorder about the α-C atom, which appears common to many structures containing this group. A model to account for the slight disorder was attempted, but this was deemed unsuccessful because applying bond-length constraints to all the bonds about the α-C atom led to instability in the refinement. The absolute configuration was determined crystallographically as S,S,S by anomalous dispersion methods with reference to both the Flack parameter and Bayesian statistics on Bijvoet differences. The configuration was also determined by an a priori knowledge of the absolute configuration of the (1S)-1-phenylethanaminium counter-ion. The molecules pack in the crystal structure to form an infinite two-dimensional hydrogen-bond network in the (100) plane of the unit cell.
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18
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Frankish N, Sheridan H. 6-(methylamino)hexane-1,2,3,4,5-pentanol 4-(((1S,2S)-1-hydroxy-2,3-dihydro-1H,1'H-[2,2-biinden]-2-yl)methyl)benzoate (PH46A): a novel small molecule with efficacy in murine models of colitis. J Med Chem 2012; 55:5497-505. [PMID: 22663546 DOI: 10.1021/jm300390f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The indane skeleton is found naturally and in several therapeutic molecules in medicinal chemistry. During our work on the anti-inflammatory activity of naturally occurring and synthetic indanes, we have synthesized a novel indane scaffold that has been optimized for both anti-inflammatory activity and bioavailability. We have evaluated our lead molecule, PH46A, in in vivo models of inflammatory bowel disease (IBD), an area of considerable unmet clinical need; current therapies are often unable to control the course of the disease. The compound significantly reduced histological damage and serum amyloid A (SAA) levels in IL-10(-/-) colitis mice, was efficacious in the 5% dextran sulfate sodium (DSS) colitis model, and compared favorably with prednisolone in this model and supports its potential use to treat acute exacerbations of the disease. Further, the graded response to the compound may also lend itself to be used at a lower dose to maintain periods of remission.
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Affiliation(s)
- Neil Frankish
- Trinity College Dublin, Drug Discovery Group, School of Pharmacy and Pharmaceutical Sciences, College Green, Dublin 2, Ireland.
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19
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Barlow JW, McHugh AP, Woods O, Walsh JJ. Synthesis of novel mast cell-stabilising and anti-allergic 1,2,3,4-tetrahydro-1-naphthalenols and related compounds. Eur J Med Chem 2011; 46:1545-54. [DOI: 10.1016/j.ejmech.2011.01.073] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 01/24/2011] [Accepted: 01/29/2011] [Indexed: 10/18/2022]
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20
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Sheridan H, Walsh JJ, Jordan M, Cogan C, Frankish N. A series of 1, 2-coupled indane dimers with mast cell stabilisation and smooth muscle relaxation properties. Eur J Med Chem 2009; 44:5018-22. [PMID: 19793620 DOI: 10.1016/j.ejmech.2009.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2008] [Revised: 09/02/2009] [Accepted: 09/03/2009] [Indexed: 10/20/2022]
Abstract
Asthma is characterised by bronchoconstriction and inflammation, with infiltration and activation of inflammatory cells such as eosinophils and mast cells, and subsequent release of inflammatory mediators. Much of the therapy directed at the treatment of asthma is either to provide symptomatic relief through bronchodilation or to reduce inflammation to prevent or delay airway remodelling. In an attempt to address both of these issues, a novel series of 1,2-indane dimers has been synthesized and evaluated for smooth muscle relaxant and mast cell stabilising activities. We have identified two lead compounds, 5 and 15, which have substantial mast cell stabilisation activity.
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Affiliation(s)
- H Sheridan
- Trinity College Dublin, Department of Pharmacy and Pharmaceutical Sciences, Panoz Institute, Westland Row, Dublin 2, Ireland.
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