1
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Zhang YH, Peng XY, Feng LX, Zhu HJ, Cao F, Wang CY. A new epimer of azaphilone derivative pinophilin B from the gorgonian-derived fungus Aspergillus fumigatus 14-27. Nat Prod Res 2019; 35:2232-2238. [PMID: 31564133 DOI: 10.1080/14786419.2019.1669028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A new epimer of azaphilone derivative pinophilin B, epi-pinophilin B (1), and three known analogues (2-4) were obtained from the culture of the gorgonian-derived fungus Aspergillus fumigatus 14-27. The structures of 1-4, including their relative configurations were determined by extensive spectroscopic analysis and comparing with literature data. The absolute configuration of 1 was determined by electronic circular dichroism (ECD) and optical rotatory (OR) calculations methods. Compounds 1-4 were isolated from A. fumigatus for the first time. Their antibacterial and cytotoxic activities were also evaluated.
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Affiliation(s)
- Ya-Hui Zhang
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, People's Republic of China.,Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, People's Republic of China
| | - Xiao-Yue Peng
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, People's Republic of China
| | - Li-Xi Feng
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, People's Republic of China
| | - Hua-Jie Zhu
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, People's Republic of China
| | - Fei Cao
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, People's Republic of China
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, People's Republic of China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, People's Republic of China
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2
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Ren J, Zhao D, Wu SJ, Wang J, Jia YJ, Li WX, Zhu HJ, Cao F, Li W, Pittman CU, He XJ. Reassigning the stereochemistry of bioactive cepharanthine using calculated versus experimental chiroptical spectroscopies. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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3
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Liang MM, Ma YY, Zhu L, Jia YJ, Zhu HJ, Li W, Zhou BD. Experimental and theoretical investigation of stable diastereomeric conformations of biscarboline amides in solution. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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4
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Sun Y, Feng X, Liu X, Qian C, Che X, Cao F, Jin S, Meng D. Caudatan A, an undescribed human kidney-type glutaminase inhibitor with tetracyclic flavan from Ohwia caudata. PHYTOCHEMISTRY 2018; 152:22-28. [PMID: 29715600 DOI: 10.1016/j.phytochem.2018.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 03/29/2018] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
Human kidney-type glutaminase (KGA) is an important target that is often over expressed in many cancer cells but very few effective inhibitors of this enzyme have yet reached clinical trials. Caudatan A and caudatan B, two undescribed tetracyclic flavans with an unusual ether bond between the C-4 and C-2' were isolated from the roots of Ohwia caudata (Thunb.) H.Ohashi. Caudatan A exhibited stronger inhibitory activity and caudatan B showed moderate effect from the results of inhibitory activities evaluations on KGA. The molecular docking and primary structure-activity relationship analysis revealed that the less steric hindrance at ring A was necessary to the effect. Therefore, combined its better solubility than that of bis-2-(5-phenylacetimido-1,2,4-thiadiazol-2-yl)ethyl sulfide (BPTES), caudatan A might be the potential candidate as the inhibitor of KGA for further studies.
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Affiliation(s)
- Yiwei Sun
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China
| | | | - Xuanli Liu
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China
| | - Cheng Qian
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Xin Che
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, PR China
| | - Fei Cao
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, PR China
| | - Sanshan Jin
- The First Clinical College of Integrated Traditional Chinese and Western Medicine, Hubei University of Chinese Medicine, Wuhan, 430065, PR China
| | - Dali Meng
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Wenhua Road 103, Shenyang 110016, PR China.
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5
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Joyce LA, Nawrat CC, Sherer EC, Biba M, Brunskill A, Martin GE, Cohen RD, Davies IW. Beyond optical rotation: what's left is not always right in total synthesis. Chem Sci 2018; 9:415-424. [PMID: 29629112 PMCID: PMC5868320 DOI: 10.1039/c7sc04249c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 10/27/2017] [Indexed: 12/02/2022] Open
Abstract
This work describes the application of vibrational (VCD) and electronic (ECD) circular dichroism spectroscopy to solve the longstanding debate around the absolute configuration of (+)-frondosin B (1). The absolute configuration of (+)-1 could confidently be assigned as (R) using these spectroscopic techniques. The discrepancy in the optical rotation (OR) values obtained in previous studies can be attributed to an undetected minor impurity (ca. 7%) that arose unexpectedly in a key step late in the synthesis. Additionally, the conditions used in the final step of the previous reports for demethylation to form the natural product proceeded with significant loss of enantiopurity. The large OR measured for the impurity at its observed level, when compared to the small rotation for the less enantiopure natural product 1, led to a measured OR value for the synthetic material that had the opposite sign of the natural product.
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Affiliation(s)
- Leo A Joyce
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , NJ 07065 , USA . ;
| | - Christopher C Nawrat
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , NJ 07065 , USA . ;
| | - Edward C Sherer
- Department of Modeling and Informatics , Merck & Co., Inc. , Rahway , NJ 07065 , USA
| | - Mirlinda Biba
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , NJ 07065 , USA . ;
| | - Andrew Brunskill
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , NJ 07065 , USA . ;
| | - Gary E Martin
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , NJ 07065 , USA . ;
| | - Ryan D Cohen
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , NJ 07065 , USA . ;
| | - Ian W Davies
- Department of Process Research & Development , Merck & Co., Inc. , Rahway , NJ 07065 , USA . ;
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6
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Ren X, Liu Z, Dong L, Miao G, Liao N, Li Z, Xiao J. Dynamic catalytic adsorptive desulfurization of real diesel over ultra-stable and low-cost silica gel-supported TiO2. AIChE J 2018. [DOI: 10.1002/aic.16055] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Xiaoling Ren
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 China
| | - Zewei Liu
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 China
| | - Lei Dong
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 China
| | - Guang Miao
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 China
| | - Neng Liao
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 China
| | - Zhong Li
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 China
| | - Jing Xiao
- School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou 510640 China
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7
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Li J, Li N, Li X, Chen G, Wang C, Lin B, Hou Y. Characteristic α-Acid Derivatives from Humulus lupulus with Antineuroinflammatory Activities. JOURNAL OF NATURAL PRODUCTS 2017; 80:3081-3092. [PMID: 29154541 DOI: 10.1021/acs.jnatprod.6b00921] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Twenty compounds, including 14 new α-acid derivatives, a new chromone, and five known compounds, were identified from the pistillate inflorescence of Humulus lupulus (hops), and their structures were elucidated via physical data analysis. The absolute configurations of new α-acid derivatives 1-11b were determined by comparing their computed and experimental electronic circular dichroism spectra using TDDFT and NMR spectroscopic data. A putative biosynthetic pathway for the identified components was deduced. Their antineuroinflammatory effects were assayed systematically, and their structure-activity relationships are discussed briefly. Among the identified compounds, compound 14 displayed moderate inhibitory effects against nitric oxide production with an IC50 value of 7.92 μM.
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Affiliation(s)
- Jiayuan Li
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang; Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education , Wenhua Road 103, Shenyang 110016, People's Republic of China
| | - Ning Li
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang; Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education , Wenhua Road 103, Shenyang 110016, People's Republic of China
| | - Xuezheng Li
- Department of Pharmacy, Affiliated Hospital of Yanbian University , Yanji 133000, People's Republic of China
| | - Gang Chen
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang; Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education , Wenhua Road 103, Shenyang 110016, People's Republic of China
| | - Cungang Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang; Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education , Wenhua Road 103, Shenyang 110016, People's Republic of China
| | - Bin Lin
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University , Shenyang 110016, People's Republic of China
| | - Yue Hou
- College of Life and Health Sciences, Department of Biochemistry and Molecular Biology, Northeastern University , Shenyang 110819, People's Republic of China
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8
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Zhang BY, Cao F, He P, Yang XL, Zhu HJ. Chemical Constituents of the Fruit of Schisandra sphenanthera. Chem Nat Compd 2017. [DOI: 10.1007/s10600-017-2223-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Cao F, Shao CL, Liu YF, Zhu HJ, Wang CY. Cytotoxic Serrulatane-Type Diterpenoids from the Gorgonian Euplexaura sp. and Their Absolute Configurations by Vibrational Circular Dichroism. Sci Rep 2017; 7:12548. [PMID: 28970539 PMCID: PMC5624892 DOI: 10.1038/s41598-017-12841-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/14/2017] [Indexed: 11/16/2022] Open
Abstract
Vibrational circular dichroism (VCD) method has become robust and reliable alternative for the stereochemical characterization of natural products. In this paper, three new serrulatane-type diterpenoids, euplexaurenes A-C (1-3), and a known metabolite, anthogorgiene P (4), were obtained from the South China Sea gorgonian Euplexaura sp. GXWZ-05. The absolute configuration of C-11 in 1-4, which was difficult to be determined by common means due to the high conformational flexibility of the eight-carbon aliphatic chain attached at C-4, was determined by VCD method, suggesting a new horizon to define the absolute configurations of natural products possessing chains. Compounds 1-4 were found to show selective cytotoxic activities against human laryngeal carcinoma (Hep-2) cell line with the IC50 values of 1.95, 7.80, 13.6 and 5.85 μM, respectively.
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Affiliation(s)
- Fei Cao
- School of Medicine and Pharmacy, Ocean University of China; Key Laboratory of Marine Drugs, The Ministry of Education of China, Qingdao, 266003, China
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding, 071002, China
| | - Chang-Lun Shao
- School of Medicine and Pharmacy, Ocean University of China; Key Laboratory of Marine Drugs, The Ministry of Education of China, Qingdao, 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.
| | - Yun-Feng Liu
- School of Medicine and Pharmacy, Ocean University of China; Key Laboratory of Marine Drugs, The Ministry of Education of China, Qingdao, 266003, China
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding, 071002, China
| | - Hua-Jie Zhu
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University, Baoding, 071002, China
| | - Chang-Yun Wang
- School of Medicine and Pharmacy, Ocean University of China; Key Laboratory of Marine Drugs, The Ministry of Education of China, Qingdao, 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, China.
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10
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Jiang F, Zhao D, Yang X, Yuan FR, Mei GJ, Shi F. Catalyst-Controlled Chemoselective and Enantioselective Reactions of Tryptophols with Isatin-Derived Imines. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02279] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Fei Jiang
- School
of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Dan Zhao
- Department
of Chemistry and Environmental Engineering, Hebei University, Baoding, 071002, China
| | - Xue Yang
- School
of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Fu-Ru Yuan
- School
of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Guang-Jian Mei
- School
of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Feng Shi
- School
of Chemistry and Material Science, Jiangsu Normal University, Xuzhou 221116, China
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11
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Ren J, Ding SS, Zhu A, Cao F, Zhu HJ. Bioactive Azaphilone Derivatives from the Fungus Talaromyces aculeatus. JOURNAL OF NATURAL PRODUCTS 2017; 80:2199-2203. [PMID: 28749670 DOI: 10.1021/acs.jnatprod.7b00032] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Six new azaphilone derivatives, talaraculones A-F (1-6), together with five known analogues (7-11), were obtained from the saline soil-derived fungus Talaromyces aculeatus. The absolute configurations of 1 and 6 were assigned by quantum chemical calculations of the electronic circular dichroism (ECD) spectra. Compounds 1 and 5 represent the first reported azaphilone derivatives with a C4 aliphatic side chain and a methylal group at C-3, respectively. Talaraculones A and B (1 and 2) exhibited stronger inhibitory activity against α-glucosidase than the positive control acarbose (IC50 = 101.5 μM), with IC50 values of 78.6 and 22.9 μM, respectively.
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Affiliation(s)
- Jie Ren
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University , Baoding 071002, People's Republic of China
| | - Shuang-Shuang Ding
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University , Baoding 071002, People's Republic of China
| | - Ao Zhu
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University , Baoding 071002, People's Republic of China
| | - Fei Cao
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University , Baoding 071002, People's Republic of China
| | - Hua-Jie Zhu
- Key Laboratory of Pharmaceutical Quality Control of Hebei Province, College of Pharmaceutical Sciences, Hebei University , Baoding 071002, People's Republic of China
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12
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Xu D, Pang XJ, Zhao T, Xu LL, Yang XL. New alkenylated tetrahydropyran derivatives from the marine sediment-derived fungus Westerdykella dispersa and their bioactivities. Fitoterapia 2017; 122:45-51. [PMID: 28842357 DOI: 10.1016/j.fitote.2017.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 08/19/2017] [Accepted: 08/21/2017] [Indexed: 11/28/2022]
Abstract
Six new alkenylated tetrahydropyran derivatives belonged to polyketides, designated as (12R,13R)-dihydroxylanomycinol (1), (12S,13S)-dihydroxylanomycinol (2), (12R,13S)-dihydroxylanomycinol (3) and (12S,13R)-dihydroxylanomycinol (4), (12S,13R)-N-acetyl-dihydroxylanomycin (5) and (12S,13S)-N-acetyl-dihydroxylanomycin (6), together with one related known compound lanomycinol (7) were isolated from the liquid cultures of Westerdykella dispersa obtained from the marine sediments. Their structures and absolute configurations were determined on the basis of extensive analysis of NMR spectra combined with comparison of NMR data to those of known compound, and computational method via calculation of the electronic circular dichroism (ECD). The anti-agricultural pathogenic fungal and antibacterial activities of all isolated compounds were evaluated. Compounds 1-7 exhibited moderate antifungal activities selectively against tested fungal strains with minimum inhibitory concentration (MIC) values ranging from 12.5 to 50μg/mL, and weak antibacterial activities selectively against tested antibacterial strains with MIC value at 100μg/mL.
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Affiliation(s)
- Dan Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, PR China
| | - Xue-Jiao Pang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, PR China
| | - Ting Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, PR China
| | - Lu-Lin Xu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, PR China
| | - Xiao-Long Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, PR China.
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13
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Burgueño-Tapia E, Joseph-Nathan P. Vibrational Circular Dichroism: Recent Advances for the Assignment of the Absolute Configuration of Natural Products. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Vibrational circular dichroism (VCD) emerged during the last decade as a reliable tool for the absolute configuration (AC) determination of organic compounds. The principles, instrumentation, and methodology applied prior to early 2013 were recently reviewed by us. Since VCD is a very dynamic field, the aim of this review is to update VCD advances for the AC assignment of terpenoids, aromatic compounds, alkaloids, and other natural products for the 2013–2014 period, when VCD was applied to the AC assignment of some 70 natural products. In addition, although discovered in 2012, a brief introduction to the VCD exciton coupling approach and its applications in natural products AC assignment is presented.
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Affiliation(s)
- Eleuterio Burgueño-Tapia
- Departamento de Química Orgánica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala, Col. Santo Tomás, México D.F., 11340 Mexico
| | - Pedro Joseph-Nathan
- Departamento de Química, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Apartado 14–740, México D.F., 07000 Mexico
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14
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Zhu ZQ, Yin L, Wang Y, Shen Y, Li C, Mei GJ, Shi F. Diastereo- and enantioselective construction of biologically important pyrrolo[1,2-a]indole scaffolds via catalytic asymmetric [3 + 2] cyclodimerizations of 3-alkyl-2-vinylindoles. Org Chem Front 2017. [DOI: 10.1039/c6qo00446f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A catalytic asymmetric [3 + 2] cyclodimerization of 3-alkyl-2-vinylindoles has been established, which efficiently constructed a pyrrolo[1,2-a]indole scaffold in a diastereo- and enantioselective fashion.
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Affiliation(s)
- Zi-Qi Zhu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Lei Yin
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Yang Wang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Yang Shen
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Can Li
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Guang-Jian Mei
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
| | - Feng Shi
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- China
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15
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Yu ZL, Peng YL, Wang C, Cao F, Huo XK, Tian XG, Feng L, Ning J, Zhang BJ, Sun CP, Ma XC. Alismanoid A, an unprecedented 1,2-seco bisabolene from Alisma orientale, and its protective activity against H2O2-induced damage in SH-SY5Y cells. NEW J CHEM 2017. [DOI: 10.1039/c7nj01806a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pair of unprecedented 1,2-seco bisabolenes, (8R)-alismanoid A (1a) and (8S)-alismanoid A (1b), were isolated from A. orientale.
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16
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Chen P, Yang Q, Lu S, Wang P, Liu Y, Li C. Enantiomeric Catalytic Formal Thiolation of 2,5-Dimethyl-3-[1-(arylsulfonyl)alkyl]pyrroles in an Oil/Water Biphasic System. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601180] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ping Chen
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 116023 Dalian P. R. China
- Graduate University of Chinese Academy of Sciences; 100049 Beijing China
| | - Qin Yang
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 116023 Dalian P. R. China
| | - Shengmei Lu
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 116023 Dalian P. R. China
| | - Peng Wang
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 116023 Dalian P. R. China
| | - Yan Liu
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 116023 Dalian P. R. China
| | - Can Li
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 116023 Dalian P. R. China
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17
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Experimental and theoretical study of stereochemistry for new pseurotin A3 with an unusual hetero-spirocyclic system. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Xu D, Zhang BY, Yang XL. Antifungal Monoterpene Derivatives from the Plant Endophytic Fungus Pestalotiopsis foedan. Chem Biodivers 2016; 13:1422-1425. [PMID: 27448166 DOI: 10.1002/cbdv.201600114] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/25/2016] [Indexed: 11/09/2022]
Abstract
A new monoterpene lactone, (1R,4R,5R,8S)-8-hydroxy-4,8-dimethyl-2-oxabicyclo[3.3.1]nonan-3-one (1), along with one related known compound, (2R)-2-[(1R)-4-methylcyclohex-3-en-1-yl]propanoic acid (2), were isolated from the liquid culture of the plant endophytic fungus Pestalotiopsis foedan obtained from the branch of Bruguiera sexangula. The structure and absolute configuration of 1 were determined on the basis of extensive analysis of NMR spectra combined with computational methods via calculation of the optical rotation (OR) and 13 C-NMR. Both compounds exhibited strong antifungal activities against Botrytis cinerea and Phytophthora nicotianae with MIC values of 3.1 and 6.3 μg/ml, respectively, which are comparable to those of the known antifungal drug ketoconazole. Compound 2 also showed modest antifungal activity against Candida albicans with a MIC value of 50 μg/ml.
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Affiliation(s)
- Dan Xu
- Innovative Drug Research Centre, Chongqing University (Huxi Campus), Chongqing, 401331, P. R. China
| | - Bing-Yang Zhang
- College of Pharmaceutical Science, Hebei University, Baoding, 071002, P. R. China
| | - Xiao-Long Yang
- Innovative Drug Research Centre, Chongqing University (Huxi Campus), Chongqing, 401331, P. R. China.
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19
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Zhao D, Li ZQ, Cao F, Liang MM, Pittman CU, Zhu HJ, Li L, Yu SS. Revised Absolute Configuration of Sibiricumin A: Substituent Effects in Simplified Model Structures Used for Quantum Mechanical Predictions of Chiroptical Properties. Chirality 2016; 28:612-7. [DOI: 10.1002/chir.22621] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/23/2016] [Accepted: 05/25/2016] [Indexed: 10/21/2022]
Affiliation(s)
- Dan Zhao
- Chinese Center for Chirality; College of Pharmacy, Hebei University; Baoding Heibei China
| | - Zheng-Qiu Li
- Chinese Center for Chirality; College of Pharmacy, Hebei University; Baoding Heibei China
| | - Fei Cao
- Chinese Center for Chirality; College of Pharmacy, Hebei University; Baoding Heibei China
| | - Miao-Miao Liang
- Chinese Center for Chirality; College of Pharmacy, Hebei University; Baoding Heibei China
| | - Charles U. Pittman
- Department Chemistry; Mississippi State University, State College; Mississippi USA
| | - Hua-Jie Zhu
- Chinese Center for Chirality; College of Pharmacy, Hebei University; Baoding Heibei China
| | - Li Li
- Chinese Academy of Medical Sciences; Peking Union Medical College; Beijing China
| | - Shi-Shan Yu
- Chinese Academy of Medical Sciences; Peking Union Medical College; Beijing China
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20
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An YN, Zhang X, Zhang TY, Zhang MY, Qian-Zhang, Deng XY, Zhao F, Zhu LJ, Wang G, Zhang J, Zhang YX, Liu B, Yao XS. Penicimenolides A-F, Resorcylic Acid Lactones from Penicillium sp., isolated from the Rhizosphere Soil of Panax notoginseng. Sci Rep 2016; 6:27396. [PMID: 27271722 PMCID: PMC4897632 DOI: 10.1038/srep27396] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 05/18/2016] [Indexed: 02/05/2023] Open
Abstract
Five new 12-membered resorcylic acid lactone derivatives, penicimenolides A-E (1-5), one new ring-opened resorcylic acid lactone derivative penicimenolide F (6), and six known biogenetically related derivatives (7-12) were isolated from the culture broth of a strain of Penicillium sp. (NO. SYP-F-7919), a fungus obtained from the rhizosphere soil of Panax notoginseng collected from the Yunnan province of China. Their structures were elucidated by extensive NMR analyses, a modified Mosher's method, chemical derivatization and single crystal X-ray diffraction analysis. Compounds 2-4 exhibited potent cytotoxicity against the U937 and MCF-7 tumour cell lines and showed moderate cytotoxic activity against the SH-SY5Y and SW480 tumour cell lines. The substitution of an acetyloxy or 2-hydroxypropionyloxy group at C-7 significantly increased the cytotoxic activity of the resorcylic acid lactone derivatives. Subsequently, the possible mechanism of compound 2 against MCF-7 cells was preliminarily investigated by in silico analysis and experimental validation, indicating compound 2 may act as a potential MEK/ERK inhibitor. Moreover, proteomics analysis was performed to explore compound 2-regulated concrete mechanism underlying MEK/ERK pathway, which is still need further study in the future. In addition, compounds 2-4 and 7 exhibited a significant inhibitory effect on NO production induced by LPS.
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Affiliation(s)
- Ya-Nan An
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Xue Zhang
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Tian-Yuan Zhang
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Meng-Yue Zhang
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Qian-Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, People’s Republic of China
| | - Xiao-Yu Deng
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Feng Zhao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, People’s Republic of China
| | - Ling-Juan Zhu
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Guan Wang
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Jie Zhang
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Yi-Xuan Zhang
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
| | - Bo Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, Chengdu 610041, People’s Republic of China
| | - Xin-Sheng Yao
- Shenyang Pharmaceutical University, Shenyang 110016, People’s Republic of China
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou 510632, People’s Republic of China
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21
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Zhang YC, Yang Q, Yang X, Zhu QN, Shi F. Rational Design of Amine Nucleophiles for Dynamic Kinetic Resolution of Azlactones Leading to Highly Enantioselective Synthesis of Bisamides. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600185] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yu-Chen Zhang
- School of Chemistry and Chemical Engineering; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 China), Fax: (+86) 516-83500065
| | - Qin Yang
- Chinese Centre for Chirality; Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of Education Administration of China; Department of Chemistry and Environmental Engineering; Hebei University; Baoding 071002 China
| | - Xue Yang
- School of Chemistry and Chemical Engineering; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 China), Fax: (+86) 516-83500065
| | - Qiu-Ning Zhu
- School of Chemistry and Chemical Engineering; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 China), Fax: (+86) 516-83500065
| | - Feng Shi
- School of Chemistry and Chemical Engineering; Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou 221116 China), Fax: (+86) 516-83500065
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22
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Zhang Y, Poopari MR, Cai X, Savin A, Dezhahang Z, Cheramy J, Xu Y. IR and Vibrational Circular Dichroism Spectroscopy of Matrine- and Artemisinin-Type Herbal Products: Stereochemical Characterization and Solvent Effects. JOURNAL OF NATURAL PRODUCTS 2016; 79:1012-1023. [PMID: 27070079 DOI: 10.1021/acs.jnatprod.5b01082] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Five Chinese herbal medicines--matrine, oxymatrine, sophoridine, artemisinin, and dihydroartemisinin--were investigated using vibrational circular dichroism (VCD) experiments and density functional theory calculations to extract their stereochemical information. The three matrine-type alkaloids are available from the dry roots of Sophora flavescens and have long been used in various traditional Chinese herbal medicines to combat diseases such as cancer and cardiac arrhythmia. Artemisinin and the related dihydroartemisinin, discovered in 1979 by Professor Youyou Tu, a 2015 Nobel laureate in medicine, are effective drugs for the treatment of malaria. The VCD measurements were carried out in CDCl3 and DMSO-d6, two solvents with different dielectric constants and hydrogen-bonding characteristics. A "clusters-in-a-liquid" approach was used to model both explicit and implicit solvent effects. The studies show that effectively accounting for solvent effects is critical to using IR and VCD spectroscopy to provide unique spectroscopic features to differentiate the potential stereoisomers of these Chinese herbal medicines.
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Affiliation(s)
- Yuefei Zhang
- Department of Chemistry, University of Alberta , Edmonton, Alberta, Canada , T6G 2G2
| | - M Reza Poopari
- Department of Chemistry, University of Alberta , Edmonton, Alberta, Canada , T6G 2G2
| | - Xiaoli Cai
- Department of Chemistry, University of Alberta , Edmonton, Alberta, Canada , T6G 2G2
| | - Aliaksandr Savin
- Department of Chemistry, University of Alberta , Edmonton, Alberta, Canada , T6G 2G2
| | - Zahra Dezhahang
- Department of Chemistry, University of Alberta , Edmonton, Alberta, Canada , T6G 2G2
| | - Joseph Cheramy
- Department of Chemistry, University of Alberta , Edmonton, Alberta, Canada , T6G 2G2
| | - Yunjie Xu
- Department of Chemistry, University of Alberta , Edmonton, Alberta, Canada , T6G 2G2
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23
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Polavarapu PL. Structural Analysis Using Chiroptical Spectroscopy: Insights and Cautions. Chirality 2016; 28:445-52. [DOI: 10.1002/chir.22601] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 03/14/2016] [Accepted: 03/17/2016] [Indexed: 11/09/2022]
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24
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Xu WF, Hou XM, Yang KL, Cao F, Yang RY, Wang CY, Shao CL. Nigrodiquinone A, a Hydroanthraquinone Dimer Containing a Rare C-9-C-7' Linkage from a Zoanthid-Derived Nigrospora sp. Fungus. Mar Drugs 2016; 14:md14030051. [PMID: 27005638 PMCID: PMC4820305 DOI: 10.3390/md14030051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 02/29/2016] [Accepted: 03/04/2016] [Indexed: 02/07/2023] Open
Abstract
One new hydroanthraquinone dimer with a rare C-9–C-7′ linkage, nigrodiquinone A (1), and four known anthraquinone monomers 2–5, were isolated from a fungus Nigrospora sp. obtained from the zoanthid Palythoa haddoni collected in the South China Sea. The structure of 1 was established through extensive NMR spectroscopy, and the absolute configuration was elucidated by comparing computed electronic circular dichroism (ECD) and optical rotations (OR) with experimental results. All the compounds were evaluated for antiviral activity, and 1 was also evaluated for antibacterial activity. Compound 4 displayed mild antiviral activity against coxsackie virus (Cox-B3) with the IC50 value of 93.7 μM, and 5 showed an IC50 value of 74.0 μM against respiratory syncytial virus (RSV).
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Affiliation(s)
- Wei-Feng Xu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Xue-Mei Hou
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Kai-Lin Yang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Fei Cao
- College of Pharmaceutical Sciences, Hebei University, Baoding 071002, China.
| | - Rui-Yun Yang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China.
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266200, China.
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Ding SS, Zhang CC, Shi WS, Liang MM, Yang Q, Zhu HJ, Li Y. Absolute configuration of two novel compounds from the Talaromyces aculeatus using optical rotation, electronic circular dichroism and vibrational circular dichroism. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.11.066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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26
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Burgueño-Tapia E, Joseph-Nathan P. Vibrational Circular Dichroism: Recent Advances for the Assignment of the Absolute Configuration of Natural Products. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501001036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Vibrational circular dichroism (VCD) emerged during the last decade as a reliable tool for the absolute configuration (AC) determination of organic compounds. The principles, instrumentation, and methodology applied prior to early 2013 were recently reviewed by us. Since VCD is a very dynamic field, the aim of this review is to update VCD advances for the AC assignment of terpenoids, aromatic compounds, alkaloids, and other natural products for the 2013-2014 period, when VCD was applied to the AC assignment of some 70 natural products. In addition, although discovered in 2012, a brief introduction to the VCD exciton coupling approach and its applications in natural products AC assignment is presented.
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Affiliation(s)
- Eleuterio Burgueño-Tapia
- Departamento de Quimica Orgdnica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico National, Prolongatión de Carpio y Plan de Ayala, Col. Santo Tomás, México D.F., 11340 Mexico
| | - Pedro Joseph-Nathan
- Departamento de Química, Centro de Investigatión y de Estudios Avanzados del Instituto Politécnico Nacional, Apartado 14-740, México D.F., 07000 Mexico
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27
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Batista Jr. JM, Blanch EW, Bolzani VDS. Recent advances in the use of vibrational chiroptical spectroscopic methods for stereochemical characterization of natural products. Nat Prod Rep 2015; 32:1280-302. [DOI: 10.1039/c5np00027k] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A comprehensive look into application of vibrational optical activity methods for conformational and configurational assignments in natural product molecules over the last 15 years is provided.
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Affiliation(s)
- João M. Batista Jr.
- Department of Chemistry
- Federal University of São Carlos – UFSCar
- São Carlos
- Brazil
| | - Ewan W. Blanch
- School of Applied Sciences
- RMIT University
- Melbourne
- Australia
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