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Wu H, Li X, He C, Liu Y, Wang C, Yang X, Ma F, Liu J, Xu J. Design, synthesis and biological evaluation of hydrogen sulfide-releasing isochroman-4-one derivatives as new antihypertensive agent candidates. Bioorg Med Chem 2022; 64:116776. [PMID: 35483137 DOI: 10.1016/j.bmc.2022.116776] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 04/12/2022] [Accepted: 04/20/2022] [Indexed: 11/27/2022]
Abstract
Cardiovascular diseases are increasingly threating the global human health, hypertension is the most important risk factor for cardiovascular and cerebrovascular diseases. To improve the antihypertensive activity and cardiovascular protective effect of natural product (±)-7,8-dihydroxy-3-methyl-isochroman-4-one [(±)-XJP], a series of novel H2S-releasing isochroman-4-one derivatives were designed and synthesized by coupling hydrogen sulfide (H2S)-releasing donors with the analogs of (±)-XJP. Further, the H2S-releasing assay indicated that some target compounds showed excellent H2S generating ability. Moreover, these novel hybrids exhibited moderate to good in vitro vasodilation efficacy. Among them, the most potent compound exhibited potent in vivo antihypertensive activity with the maximum antihypertensive amplitude about 27%, which was more potent than that of the lead compound (±)-XJP. These results suggested that the hybridization of H2S-donors and (±)-XJP analogs may provide a promising approach for the discovery of novel antihypertensive agents.
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Affiliation(s)
- Hongyu Wu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Xinnan Li
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Chen He
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Yulin Liu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China; Department of Organic Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Chaolei Wang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Xue Yang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China
| | - Fenfen Ma
- Department of Pharmacy, Shanghai Pudong Hospital, Fudan Univerisity, Shanghai 201399, PR China
| | - Jie Liu
- Department of Organic Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China.
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, PR China.
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Novel and Potent Acetylcholinesterase Inhibitors for the Treatment of Alzheimer's Disease from Natural (±)-7,8-Dihydroxy-3-methyl-isochroman-4-one. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27103090. [PMID: 35630563 PMCID: PMC9145193 DOI: 10.3390/molecules27103090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 11/22/2022]
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disease that causes memory and cognitive decline as well as behavioral problems. It is a progressive and well recognized complex disease; therefore, it is very urgent to develop novel and effective anti-AD drugs. In this study, a series of novel isochroman-4-one derivatives from natural (±)-7,8-dihydroxy-3-methyl-isochroman-4-one [(±)-XJP] were designed and synthesized, and their anti-AD potential was evaluated. Among them, compound 10a [(Z)-3-acetyl-1-benzyl-4-((6,7-dimethoxy-4-oxoisochroman-3-ylidene)methyl)pyridin-1-ium bromide] possessed potent anti-acetylcholinesterase (AChE) activity as well as modest antioxidant activity. Further molecular modeling and kinetic investigations revealed that compound 10a was a dual-binding inhibitor that binds to both catalytic anionic site (CAS) and peripheral anionic site (PAS) of the enzyme AChE. In addition, compound 10a exhibited low cytotoxicity and moderate anti-Aβ aggregation efficacy. Moreover, the in silico screening suggested that these compounds could pass across the blood–brain barrier with high penetration. These findings show that compound 10a was a promising lead from a natural product with potent AChE inhibitory activity and deserves to be further developed for the prevention and treatment of AD.
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Li W, Shuai W, Xu F, Sun H, Xu S, Yao H, Liu J, Yao H, Zhu Z, Xu J. Discovery of Novel 4-Arylisochromenes as Anticancer Agents Inhibiting Tubulin Polymerization. ACS Med Chem Lett 2018; 9:974-979. [PMID: 30344902 DOI: 10.1021/acsmedchemlett.8b00217] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 09/25/2018] [Indexed: 12/18/2022] Open
Abstract
XJP-L (8), a derivative of the natural product (±)-7,8-dihydroxy-3-methylisochroman-4-one isolated from the peel of Musa sapien tum L., was found to exhibit weak inhibitory activity of tubulin polymerization (IC50 = 10.6 μM) in our previous studies. Thus, a series of 4-arylisochromene derivatives were prepared by incorporating the trimethoxyphenyl moiety into 8, among which compound (±)-19b was identified as the most potent compound with IC50 values ranging from 10 to 25 nM against a panel of cancer cell lines. Further mechanism studies demonstrated that (±)-19b disrupted the intracellular microtubule network, caused G2/M phase arrest, induced cell apoptosis, and depolarized mitochondria of K562 cells. Moreover, (±)-19b exhibited potent in vitro antivascular and in vivo antitumor activities. Notably, the R-configured enantiomer of (±)-19b, which was prepared by chiral separation, was slightly more potent than (±)-19b and was much more potent than the S-configured enantiomer in both antiproliferative and antitubulin assays. Our findings suggest that (±)-19b deserves further research as a potential antitubulin agent for the treatment of cancers.
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Affiliation(s)
- Wenlong Li
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Wen Shuai
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Feijie Xu
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Honghao Sun
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Shengtao Xu
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Hong Yao
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Jie Liu
- Department of Organic Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Hequan Yao
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
| | - Zheying Zhu
- Division of Molecular Therapeutics & Formulation, School of Pharmacy, The University of Nottingham, University Park Campus, Nottingham NG7 2RD, U.K
| | - Jinyi Xu
- Department of Medicinal Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, P. R. China
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Tu KN, Gao C, Blum SA. An Oxyboration Route to a Single Regioisomer of Borylated Dihydrofurans and Isochromenes. J Org Chem 2018; 83:11204-11217. [DOI: 10.1021/acs.joc.8b01790] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kim N. Tu
- Department of Chemistry, University of California, Irvine, Irvine, California 92697−2025, United States
| | - Chao Gao
- Department of Chemistry, University of California, Irvine, Irvine, California 92697−2025, United States
| | - Suzanne A. Blum
- Department of Chemistry, University of California, Irvine, Irvine, California 92697−2025, United States
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Choudhary S, Singh PK, Verma H, Singh H, Silakari O. Success stories of natural product-based hybrid molecules for multi-factorial diseases. Eur J Med Chem 2018; 151:62-97. [PMID: 29605809 DOI: 10.1016/j.ejmech.2018.03.057] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 12/18/2022]
Abstract
Complex diseases comprises of highly complicated etiology resulting in limited applicability of conventional targeted therapies. Consequently, conventional medicinal compounds suffer major failure when used for such disease conditions. Additionally, development of multidrug resistance (MDR), adverse drug reactions and clinical specificity of single targeted drug therapy has increased thrust for novel drug therapy. In this rapidly evolving era, natural product-based discovery of hybrid molecules or multi-targeted drug therapies have shown promising results and are trending now a days. Historically, nature has blessed human with different sources viz. plant, animal, microbial, marine and ethnopharmaceutical sources which has given a wide variety of medicinally active compounds. These compounds from natural origin are always choice of interest of medicinal chemists because of their minimum side effects. Hybrid molecules synthesized by fusing or conjugating different active molecules obtained from these sources are reported to synergistically block different pathways which contribute in the pathogenesis of complex diseases. This review strives to encompass all natural product-derived hybrid molecules which act as multi-targeting agents striking various targets involved in different pathways of complex diseased conditions reported in literature.
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Affiliation(s)
- Shalki Choudhary
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug research, Punjabi University, Patiala, Punjab, 147002, India
| | - Pankaj Kumar Singh
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug research, Punjabi University, Patiala, Punjab, 147002, India
| | - Himanshu Verma
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug research, Punjabi University, Patiala, Punjab, 147002, India
| | | | - Om Silakari
- Molecular Modelling Lab (MML), Department of Pharmaceutical Sciences and Drug research, Punjabi University, Patiala, Punjab, 147002, India.
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Xing S, Gu N, Qin J, Cui H, Li Y, Wang K, Tian D, Chen B, Yu G. Construction of 4-Isochromanones through Cu(OTf)2
-Catalysed Sequential C=O and C-O Bond Formation. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701808] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry; Ministry of Education; College of Chemistry; Tianjin Normal University; 300387 Tianjin P. R. China
| | - Nan Gu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry; Ministry of Education; College of Chemistry; Tianjin Normal University; 300387 Tianjin P. R. China
| | - Jiajing Qin
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry; Ministry of Education; College of Chemistry; Tianjin Normal University; 300387 Tianjin P. R. China
| | - Hong Cui
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry; Ministry of Education; College of Chemistry; Tianjin Normal University; 300387 Tianjin P. R. China
| | - Yan Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry; Ministry of Education; College of Chemistry; Tianjin Normal University; 300387 Tianjin P. R. China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry; Ministry of Education; College of Chemistry; Tianjin Normal University; 300387 Tianjin P. R. China
| | - Dawei Tian
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry; Ministry of Education; College of Chemistry; Tianjin Normal University; 300387 Tianjin P. R. China
| | - Bo Chen
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry; Ministry of Education; College of Chemistry; Tianjin Normal University; 300387 Tianjin P. R. China
| | - Guo Yu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry; Ministry of Education; College of Chemistry; Tianjin Normal University; 300387 Tianjin P. R. China
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Kornsakulkarn J, Saepua S, Suvannakad R, Supothina S, Boonyuen N, Isaka M, Prabpai S, Kongsaeree P, Thongpanchang C. Cytotoxic tropolones from the fungus Nemania sp. BCC 30850. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Antioxidant activity and acetylcholinesterase inhibition of field and in vitro grown Musa L. species. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2016. [DOI: 10.1007/s11694-016-9416-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Kandasamy S, Ramu S, Aradhya SM. In vitro functional properties of crude extracts and isolated compounds from banana pseudostem and rhizome. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:1347-1355. [PMID: 25914102 DOI: 10.1002/jsfa.7229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 04/14/2015] [Accepted: 04/19/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND Pseudostem and rhizome are the significant bio-waste generated (43.48%) from the banana plant post fruit harvest, which are usually left in the plantation or incinerated and wasted. Amounts used in production for consumption are negligible. However, the material has an important part to play in indigenous systems of medicine. Based on the huge volume of bio-waste generated and its traditional medicinal use, it is worth exploiting it as a source of natural bioactive compounds. In the current study, sequential extracts from banana pseudostem (BPS) and rhizome (BR), and isolated compounds including chlorogenic acid, 4-epicyclomusalenone and cycloeucalenol acetate, were tested for their antimicrobial activity, antiplatelet aggregation and cytotoxicity. RESULTS Isolated compounds and crude extracts exhibited strong antimicrobial activity against a wide range of bacterial and fungal strains, platelet aggregation induced by collagen and cytotoxicity towards human liver cancer (HepG2) cells. CONCLUSION Banana plant bio-waste, pseudostem and rhizome may serve as a potential source of multifunctional bioactive compounds and functional ingredient in food and other allied industries.
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Affiliation(s)
- Saravanan Kandasamy
- Amity International Centre for Post Harvest Technology and Cold Chain Management, Amity University, Noida 201303, Uttar Pradesh, India
| | - Sasikala Ramu
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur, Chennai -603203, Tamilnadu, India
| | - Somaradhya Mallikarjuna Aradhya
- Department of Fruit and Vegetable Technology, CSIR - Central Food Technological Research Institute, Mysore 570020, Karnataka, India
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Wang C, Wu Z, Wang J, Liu J, Yao H, Lin A, Xu J. An efficient synthesis of 4-isochromanones via Parham-type cyclization with Weinreb amide. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.08.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Design, synthesis, biological evaluation and docking study of 4-isochromanone hybrids bearing N-benzyl pyridinium moiety as dual binding site acetylcholinesterase inhibitors. Bioorg Med Chem Lett 2015; 25:5212-6. [PMID: 26454504 DOI: 10.1016/j.bmcl.2015.09.063] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 09/23/2015] [Accepted: 09/26/2015] [Indexed: 11/23/2022]
Abstract
A series of novel 4-isochromanone hybrids bearing N-benzyl pyridinium moiety as dual binding site acetylcholinesterase inhibitors have been designed and synthesized. The screening results showed that most of the compounds exhibited potent anti-AChE activity in the range of nM concentrations. The 1-(4-fluorobenzyl) substituted derivative 9d exhibited the most potent anti-AChE activity with IC50 value of 8.9 nM and high AChE/BuChE selectivity (SI>230). Kinetic and molecular modeling studies suggested that compound 9d was mixed-type inhibitor, binding simultaneously to CAS and PAS of AChE. Besides, the preliminary structure-activity relationships were discussed.
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Insights into drug discovery from natural products through structural modification. Fitoterapia 2015; 103:231-41. [PMID: 25917513 DOI: 10.1016/j.fitote.2015.04.012] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 04/19/2015] [Accepted: 04/20/2015] [Indexed: 01/01/2023]
Abstract
Natural products (NPs) have played a key role in drug discovery and are still a prolific source of novel lead compounds or pharmacophores for medicinal chemistry. Pharmacological activity and druggability are two indispensable components advancing NPs from leads to drugs. Although naturally active substances are usually good lead compounds, most of them can hardly satisfy the demands for druggability. Hence, these structural phenotypes have to be modified and optimized to overcome existing deficiencies and shortcomings. This review illustrates druggability optimization of NPs through structural modification with some successful examples.
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Wang C, Wei G, Yang X, Yao H, Jiang J, Liu J, Shen M, Wu X, Xu J. First total synthesis of antihypertensive natural products S-(+)-XJP and R-(−)-XJP. Org Biomol Chem 2014; 12:7338-44. [DOI: 10.1039/c4ob01470g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first total synthesis of S-(+)-XJP and R-(−)-XJP has been achieved via intramolecular Heck reaction. A latent functionality strategy was implemented to circumvent the racemization in this endeavor.
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Affiliation(s)
- Chaolei Wang
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing 210009, PR China
- Department of Medicinal Chemistry
- China Pharmaceutical University
| | - Guoxiang Wei
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing 210009, PR China
- Department of Medicinal Chemistry
- China Pharmaceutical University
| | - Xue Yang
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing 210009, PR China
- Department of Medicinal Chemistry
- China Pharmaceutical University
| | - Hequan Yao
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing 210009, PR China
- Department of Medicinal Chemistry
- China Pharmaceutical University
| | - Jieyun Jiang
- Department of Microbiology
- Immunology and Molecular Genetics
- University of Kentucky College of Medicine
- Lexington, USA
| | - Jie Liu
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing 210009, PR China
- Department of Organic Chemistry
- China Pharmaceutical University
| | - Mingqin Shen
- Jiangsu Provincial Institute of Traditional Chinese Medicine
- Nanjing 210028, PR China
| | - Xiaoming Wu
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing 210009, PR China
- Department of Medicinal Chemistry
- China Pharmaceutical University
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines
- China Pharmaceutical University
- Nanjing 210009, PR China
- Department of Medicinal Chemistry
- China Pharmaceutical University
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Synthesis and β-adrenergic blocking activity of oxime ether hybrids derived from a natural isochroman-4-one. Chin J Nat Med 2013; 11:538-45. [PMID: 24359781 DOI: 10.1016/s1875-5364(13)60098-9] [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: 01/28/2013] [Indexed: 11/20/2022]
Abstract
AIM In a search for new cardiovascular drug candidates, a series of novel oxime ethers derived from a natural isochroman-4-one were synthesized. METHOD Compounds 3 and 6, derived from the natural antihypertensive compound 7, 8-dihydroxy-3-methyl-isochroman-4-one (XJP), were designed and synthesized. Subsequently, a series of novel isochroman-4-one oxime ether hybrids were prepared by hybridizing various N-substituted isopropanolamine functionalities to isochroman-4-one oxime. Furthermore, β1-adrenergic blocking activities of the synthesized compounds were assayed using the isolated rat left atria. RESULTS Twenty target compounds were obtained, and the preliminary structure-activity relationships were deduced. The most promising compound Ic exhibited β1-adrenoceptor blocking activity (inhibition: 52.2%) at 10(-7) mol·L(-1), which was superior to that of propranolol (inhibition: 49.7%). CONCLUSION The results suggested that natural product XJP/isopropanolamine moiety hybrids may provide a promising approach for the discovery of novel cardiovascular drug candidates.
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Novel hybrids of natural isochroman-4-one bearing N-substituted isopropanolamine as potential antihypertensive candidates. Bioorg Med Chem 2013; 21:2495-502. [DOI: 10.1016/j.bmc.2013.02.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 02/21/2013] [Accepted: 02/28/2013] [Indexed: 11/23/2022]
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Novel nitric oxide-releasing isochroman-4-one derivatives: Synthesis and evaluation of antihypertensive activity. Bioorg Med Chem 2012; 20:6848-55. [DOI: 10.1016/j.bmc.2012.09.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2012] [Revised: 09/18/2012] [Accepted: 09/19/2012] [Indexed: 11/17/2022]
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18
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Bai R, Liu J, Zhu Y, Yang X, Yang C, Kong L, Wang X, Zhang H, Yao H, Shen M, Wu X, Xu J. Chiral separation, configurational identification and antihypertensive evaluation of (±)-7,8-dihydroxy-3-methyl-isochromanone-4. Bioorg Med Chem Lett 2012; 22:6490-3. [DOI: 10.1016/j.bmcl.2012.08.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 08/07/2012] [Accepted: 08/10/2012] [Indexed: 11/28/2022]
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Bhaskar JJ, S M, Chilkunda ND, Salimath PV. Banana (Musa sp. var. elakki bale) flower and pseudostem: dietary fiber and associated antioxidant capacity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:427-432. [PMID: 22122826 DOI: 10.1021/jf204539v] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Banana flower (BF) and pseudostem (PS) are byproducts of banana cultivation and are known to have health beneficial effects. The main objective of this study was to evaluate the dietary fiber composition and antioxidant effect of BF and PS. In the present study, BF and PS were found to be rich in dietary fiber (65.6 ± 1.32 and 28.8 ± 0.98%, respectively). Dietary fiber fractions were extracted and characterized in terms of sugar profile, and antioxidant activities were determined. BF and PS fractions were rich in sugars and showed wide diversity with respect to the nature of the sugars. Hemicellulose A fraction of BF showed high amounts of total polyphenols and total antioxidants, which were 121.8 ± 1.9 and 39.03 ± 0.118 μg/mg extract, respectively. HPLC analysis showed the presence of phenolic acids in hemicellulose A and B fractions of BF. These results indicate that BF and PS are rich sources of dietary fiber associated with polyphenols, which could promote health beneficial effects.
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Affiliation(s)
- Jamuna J Bhaskar
- Department of Biochemistry and Nutrition, Central Food Technological Research Institute, CSIR Unit, Mysore 570 020, India
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