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Langenohl F, Otte F, Strohmann C. Crystal structure of 2-methyl-1,2,3,4-tetra-hydro-iso-quinoline trihydrate. Acta Crystallogr E Crystallogr Commun 2020; 76:298-302. [PMID: 32148864 PMCID: PMC7057357 DOI: 10.1107/s2056989020000730] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 01/21/2020] [Indexed: 12/02/2022]
Abstract
The crystal structure of the title compound, C10H13N·3H2O, a heterocyclic amine, was determined in the presence of water. The compound co-crystallizes with three water mol-ecules in the asymmetric unit, which leads to the formation of hydrogen bonding in the crystal.
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Affiliation(s)
- Felix Langenohl
- Technical University Dortmund, Inorganic Chemistry, Otto-Hahn-Strasse 6, D-44227, Dortmund, Germany
| | - Felix Otte
- Technical University Dortmund, Inorganic Chemistry, Otto-Hahn-Strasse 6, D-44227, Dortmund, Germany
| | - Carsten Strohmann
- Technical University Dortmund, Inorganic Chemistry, Otto-Hahn-Strasse 6, D-44227, Dortmund, Germany
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Rullo M, Niso M, Pisani L, Carrieri A, Colabufo NA, Cellamare S, Altomare CD. 1,2,3,4-Tetrahydroisoquinoline/2H-chromen-2-one conjugates as nanomolar P-glycoprotein inhibitors: Molecular determinants for affinity and selectivity over multidrug resistance associated protein 1. Eur J Med Chem 2018; 161:433-444. [PMID: 30384046 DOI: 10.1016/j.ejmech.2018.10.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 10/15/2018] [Accepted: 10/16/2018] [Indexed: 11/30/2022]
Abstract
A series of coniugates bearing a 1,2,3,4-tetrahydroisoquinoline motif linked to substituted 7-hydroxy-2H-chromen-2-ones was synthesized and assayed through calcein-AM test in Madin-Darby Canine Kidney (MDCK) cells overexpressing P-glycoprotein (P-gp) and closely related multidrug resistance associated protein 1 (MRP1) to probe the interference with efflux mechanisms mediated by P-gp and MRP1, respectively. A number of substituents at C3 and C4 of coumarin nucleus along with differently sized and shaped spacers was enrolled to investigate the effects of focused structural modifications over affinity and selectivity. Linker length and flexibility played a key role in enhancing P-gp affinity as proved by the most potent P-gp modulator (3h, IC50 = 70 nM). A phenyl ring within the spacer (3k, 3l, 3o) and bulkier groups (Br in 3r, Ph in 3u) at coumarin C3 led to derivatives showing nanomolar activity (160 nM < IC50 < 280 nM) along with outstanding selectivity over MRP1 (SI > 350). Molecular docking calculations carried out on a human MDR1 homology model structure contributed to gain insights into the ligands' binding modes. Some compounds (3d, 3h, 3l, 3r, 3t, 3u) reversed MDR thereby restoring doxorubicin cytotoxicity when co-administered with the drug into MDCK-MDR1 cells.
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Affiliation(s)
- Mariagrazia Rullo
- Dipartimento di Farmacia-Scienze Del Farmaco, Università Degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy
| | - Mauro Niso
- Dipartimento di Farmacia-Scienze Del Farmaco, Università Degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy
| | - Leonardo Pisani
- Dipartimento di Farmacia-Scienze Del Farmaco, Università Degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy.
| | - Antonio Carrieri
- Dipartimento di Farmacia-Scienze Del Farmaco, Università Degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy
| | - Nicola Antonio Colabufo
- Dipartimento di Farmacia-Scienze Del Farmaco, Università Degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy
| | - Saverio Cellamare
- Dipartimento di Farmacia-Scienze Del Farmaco, Università Degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy
| | - Cosimo Damiano Altomare
- Dipartimento di Farmacia-Scienze Del Farmaco, Università Degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy
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Guglielmo S, Lazzarato L, Contino M, Perrone MG, Chegaev K, Carrieri A, Fruttero R, Colabufo NA, Gasco A. Structure-Activity Relationship Studies on Tetrahydroisoquinoline Derivatives: [4'-(6,7-Dimethoxy-3,4-dihydro-1H-isoquinolin-2-ylmethyl)biphenyl-4-ol] (MC70) Conjugated through Flexible Alkyl Chains with Furazan Moieties Gives Rise to Potent and Selective Ligands of P-glycoprotein. J Med Chem 2016; 59:6729-38. [PMID: 27336199 DOI: 10.1021/acs.jmedchem.6b00252] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
P-glycoprotein (P-gp) is a well-known membrane transporter expressed in a number of strategic biological barriers, where it exerts a protective effect of paramount importance. Conversely it is one of the main causes of multidrug resistance (MDR), being capable of effluxing many chemotherapeutics. In a development of previous research, a small library of compounds was created conjugating diversely substituted furazan rings with MC70, a well-known P-gp inhibitor. These compounds were assessed for their potency against P-gp and another transporter (MRP1), for their apparent permeability (Papp) and for their ability to induce ATPase activity, thus delineating a complete functional profile. They displayed a substrate mechanism of action and high selectivity toward P-gp, unlike the lead compound. Data relating to their activity range from low micromolar to sub-nanomolar EC50, the most interesting compounds being 15 (0.97 nM), 19 (1.3 nM), 25 (0.60 nM), and 27 (0.90 nM).
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Affiliation(s)
- Stefano Guglielmo
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino Via P. Giuria 9, 10125 Torino, Italy
| | - Loretta Lazzarato
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino Via P. Giuria 9, 10125 Torino, Italy
| | - Marialessandra Contino
- Dipartimento di Farmacia-Scienze del Farmaco Università degli Studi di Bari "A. Moro" , Via Orabona 4, 70125 Bari, Italy
| | - Maria G Perrone
- Dipartimento di Farmacia-Scienze del Farmaco Università degli Studi di Bari "A. Moro" , Via Orabona 4, 70125 Bari, Italy
| | - Konstantin Chegaev
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino Via P. Giuria 9, 10125 Torino, Italy
| | - Antonio Carrieri
- Dipartimento di Farmacia-Scienze del Farmaco Università degli Studi di Bari "A. Moro" , Via Orabona 4, 70125 Bari, Italy
| | - Roberta Fruttero
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino Via P. Giuria 9, 10125 Torino, Italy
| | - Nicola A Colabufo
- Dipartimento di Farmacia-Scienze del Farmaco Università degli Studi di Bari "A. Moro" , Via Orabona 4, 70125 Bari, Italy.,Biofordrug s.r.l., Spin-off dell'Università degli Studi di Bari "A. Moro" Via Orabona 4, 70125 Bari, Italy
| | - Alberto Gasco
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino Via P. Giuria 9, 10125 Torino, Italy
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