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Yang F, He WP, Yao JQ, Zou D, Chen P, Li J. Synthesis and Neuroprotective Biological Evaluation of Quinazolinone Derivatives via Scaffold Hopping. Curr Org Synth 2019; 16:772-775. [DOI: 10.2174/1570179416666190328233501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 01/23/2019] [Accepted: 02/04/2019] [Indexed: 01/08/2023]
Abstract
Objective:
To develop efficient method for the synthesis of quinazolinone derivatives bearing
different functional groups on ring A and ring B and evaluation as neuroprotective agents.
Methods:
Synthetic route to quinazolinone derivatives was furnished by condensation/cyclocondensation/
reduction sequence of the activated N-acylbenzotriazoles. The structures of the targets compounds
have been deduced upon their spectral data (1HNMR, 13CNMR and Mass spectroscopy). The
neuroprotective activities of the synthesized compounds are also evaluated.
Results:
Preliminary screening on a MPP+ induced SH-SY5Y cell injury model of the synthesized compounds
resulted in four compounds (6q, 6r, 6u, and 8e) showed promising neural cell protection activities. The action
mechanisms of these compounds on neuroprotection were then analyzed by docking and reverse docking
modeling.
Conclusion:
A series of quinazolinone derivatives, including different substitution types on rings A and B
were designed and synthesized via scaffold hopping. With the help of neuroprotective biological evaluation,
several efficient therapeutic neuroprotective agents were found for further evaluation as drug candidate against
neurodegenerative disorder.
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Affiliation(s)
- Fan Yang
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, Zhejiang, China
| | - Wei-Ping He
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, Zhejiang, China
| | - Jia-Qi Yao
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, Zhejiang, China
| | - Dong Zou
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, Zhejiang, China
| | - Pu Chen
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, Zhejiang, China
| | - Jie Li
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, Zhejiang, China
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A new fundamental type of conformational isomerism. Nat Chem 2018; 10:615-624. [PMID: 29784991 DOI: 10.1038/s41557-018-0043-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 03/08/2018] [Indexed: 11/08/2022]
Abstract
Isomerism is a fundamental chemical concept, reflecting the fact that the arrangement of atoms in a molecular entity has a profound influence on its chemical and physical properties. Here we describe a previously unclassified fundamental form of conformational isomerism through four resolved stereoisomers of a transoid (BF)O(BF)-quinoxalinoporphyrin. These comprise two pairs of enantiomers that manifest structural relationships not describable within existing IUPAC nomenclature and terminology. They undergo thermal diastereomeric interconversion over a barrier of 104 ± 2 kJ mol-1, which we term 'akamptisomerization'. Feasible interconversion processes between conceivable synthesis products and reaction intermediates were mapped out by density functional theory calculations, identifying bond-angle inversion (BAI) at a singly bonded atom as the reaction mechanism. We also introduce the necessary BAI stereodescriptors parvo and amplo. Based on an extended polytope formalism of molecular structure and stereoisomerization, BAI-driven akamptisomerization is shown to be the final fundamental type of conformational isomerization.
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Gu J, Sui Z, Fang C, Tan Q. Stereochemical considerations in pharmacokinetic processes of representative antineoplastic agents. Drug Metab Rev 2017; 49:438-450. [PMID: 29078726 DOI: 10.1080/03602532.2017.1394322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The vast majority of chemical drugs or drug candidates contain stereocenter(s) in their molecular structures. In these molecules, stereochemical properties are vital properties that influence or even determine their drug actions. Therefore, studying the stereochemical issues of drugs (or drug candidates) is necessary for rational drug use. These stereochemical issues are usually involved with the stereoselectivity in pharmacokinetic processes, especially in the metabolism process. Thus, the investigation of the stereochemical issues in drug metabolism process deserves great attention, especially in those chiral/prochiral antineoplastic agents exhibiting pharmacodynamics and toxicologic differences between stereoisomers. Published reviews concerning this certain issue are inspiring, however they were covering all drug types and only limited antineoplastic drugs were discussed. Here in this review, the research on stereochemical issues in pharmacokinetic processes of some representative antineoplastic agents were described, especially focusing on some newly developed compounds. We highlight the chemical transformations in pharmacokinetic processes of these chiral/prochiral compounds and discuss their different behaviors with metabolic enzymes or transporter proteins, to explicate the observed stereoselectivity intrinsically.
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Affiliation(s)
- Jing Gu
- a Department of Thoracic Surgery, Institute of Surgery Research , Daping Hospital, Third Military Medical University , Chongqing , China
| | - Zheng Sui
- a Department of Thoracic Surgery, Institute of Surgery Research , Daping Hospital, Third Military Medical University , Chongqing , China
| | - Chunshu Fang
- b The Health Team of 77133th Troops , Chinese People's Liberation Army , Chongqing , China
| | - Qunyou Tan
- a Department of Thoracic Surgery, Institute of Surgery Research , Daping Hospital, Third Military Medical University , Chongqing , China
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Abstract
Drug metabolism can produce metabolites with physicochemical and pharmacological properties that differ substantially from those of the parent drug, and consequently has important implications for both drug safety and efficacy. To reduce the risk of costly clinical-stage attrition due to the metabolic characteristics of drug candidates, there is a need for efficient and reliable ways to predict drug metabolism in vitro, in silico and in vivo. In this Perspective, we provide an overview of the state of the art of experimental and computational approaches for investigating drug metabolism. We highlight the scope and limitations of these methods, and indicate strategies to harvest the synergies that result from combining measurement and prediction of drug metabolism.
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Abstract
Stereochemical factors are known to play a significant role in the metabolism of drugs and other xenobiotics. Following Prelog's lead, types of metabolic stereoselectivity can be categorized as (i) substrate stereoselectivity (the differential metabolism of two or more stereoisomeric substrates) and (ii) product stereoselectivity (the differential formation of two or more stereoisomeric metabolites from a single substrate). Combinations of the two categories exist as (iii) substrate-product stereoselectivities, meaning that product stereoselectivity itself is substrate stereoselective. Here, published examples of metabolic stereoselectivities are examined in the light of these concepts. In parallel, a graphical scheme is presented with a view to facilitate learning and help researchers to solve classification problems.
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Affiliation(s)
- Bernard Testa
- Department of Pharmacy, Lausanne University Hospital , Lausanne , Switzerland
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