1
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Hu GQ, Zhang WY, Liu YX, Liu JH, Zhao B. Visible Light-Accelerated Palladium-Catalyzed Thiocarbonylation Using Oxalic Acid Monothioester with Aryl/Alkenyl Sulfonium Salts. J Org Chem 2023; 88:14351-14356. [PMID: 37802501 DOI: 10.1021/acs.joc.3c01173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Herein, we present a decarboxylative thiocarbonylation of aryl and alkenyl sulfonium salts with oxalic acid monothioethers (OAMs), which can be achieved by visible light-accelerated palladium catalysis. Sulfonium salts are widely available, and OAM is an easily accessible and stored reagent; this mild reaction method can also be used for the synthesis of different types of thioester compounds. The reaction represents a new application of visible light-accelerated palladium catalysis in catalytic decarboxylative cross-couplings.
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Affiliation(s)
- Guo-Qin Hu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Wen-Yan Zhang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Yong-Xin Liu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Jing-Hui Liu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Bin Zhao
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
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2
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Wang Z, Chen X, Li D, Bai E, Zhang H, Duan Y, Huang Y. Platensimycin-berberine chloride co-amorphous drug system: Sustained release and prolonged half-life. Eur J Pharm Biopharm 2022; 179:126-136. [PMID: 36087879 DOI: 10.1016/j.ejpb.2022.09.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/29/2022] [Accepted: 09/02/2022] [Indexed: 11/17/2022]
Abstract
Co-amorphous technology is an emerging approach for pharmaceutical engineering of drugs and drug leads with improved physicochemical properties and bioavailability. Platensimycin (PTM) is a promising natural antibiotic lead that acts on bacterial fatty acid synthase and exhibits excellent antibacterial activity. Despite great strides to improve its poor pharmacokinetics by medicinal chemistry and nanotechnology, there are no convenient oral delivery systems developed. Here, a co-amorphous system of PTM and berberine chloride (BCL) was developed for oral delivery of PTM. Co-amorphous PTM-BCL was prepared by rotary vacuum evaporation method, and systematically characterized by powder X-ray diffraction, temperature modulated differential scanning calorimetry, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). Compared with PTM or BCL alone, the equilibrium solubility and dissolution rate of both of them in the co-amorphous systems decreased significantly, showing the characteristics of sustained release. The molecular interactions between PTM and BCL were mediated by strong charged-mediated hydrogen bonds, based on FTIR, XPS, and NMR-based techniques. The co-amorphous PTM-BCL system showed excellent physiochemical stability at room and elevated (40 °C) temperature under dry conditions. The combination of PTM and BCL showed increased killing of a clinical isolated methicillin-resistant Staphylococcus aureus strain in killing checkerboard assays. Finally, co-amorphous PTM-BCL exhibited 2- or 3-fold longer half-life in rats than that of crystalline and amorphous PTM upon oral administration, respectively. Our study suggests a rational approach to realize the full potential of potent antibiotic PTM, which may be conveniently adapted for engineering of other important pharmaceutics.
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Affiliation(s)
- Zhe Wang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Xin Chen
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Duanxiu Li
- Laboratory of Magnetic Resonance Spectroscopy and Imaging, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, PR China; Guangdong Institute of Semiconductor Micro-Nano Manufacturing Technology, Foshan 528200, PR China
| | - Enhe Bai
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, PR China
| | - Hailu Zhang
- Laboratory of Magnetic Resonance Spectroscopy and Imaging, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, PR China
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, PR China; Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, PR China; National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, PR China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, PR China; National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, PR China.
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3
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Maurya AK, Baliyan N, Kumar R, Agnihotri VK. Synthesis of Sulfur-Containing Analogues of Hedychenone, a Labdane Diterpenoid from Hedychium spicatum. JOURNAL OF NATURAL PRODUCTS 2022; 85:1691-1696. [PMID: 35790346 DOI: 10.1021/acs.jnatprod.2c00112] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The labdane diterpene hedychenone, isolated from Hedychium spicatum, is an example of a furan-containing natural product. Herein, a new and efficient method for the synthesis of 19 new thio analogues of hedychenone is reported. The present methodology exhibits a broad substrate scope with good to excellent yields without metal or base under mild reaction conditions. The natural compound 1 and four semisynthetic derivatives (3a, 3b, 3i, and 3j) exhibited strong α-glucosidase inhibition activity with IC50 values of 15.93 ± 0.29, 9.70 ± 0.33, 11.82 ± 0.06, 12.23 ± 0.33, and 12.15 ± 0.14 μg/mL, respectively. In addition, compound 3e (6.0 ± 0.04 mm; zone of inhibition) displayed antibacterial activity against Staphylococcus aureus. This study increases the chemical diversity of bioactive hedychenone derivatives and provides a direction for the development of antidiabetic agents.
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Affiliation(s)
- Antim Kumar Maurya
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Neha Baliyan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rakshak Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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4
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Deng Y, Li Y, Wen Z, Ruiz CH, Weng X, Cameron MD, Duan Y, Huang Y. Morphing Natural Product Platensimycin via Heck, Sonogashira, and One-Pot Sonogashira/Cycloaddition Reactions to Produce Antibiotics with In Vivo Activity. Antibiotics (Basel) 2022; 11:antibiotics11040425. [PMID: 35453177 PMCID: PMC9027111 DOI: 10.3390/antibiotics11040425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 12/04/2022] Open
Abstract
Type II fatty acid synthases are promising drug targets against major bacterial pathogens. Platensimycin (PTM) is a potent inhibitor against β-ketoacyl-[acyl carrier protein] synthase II (FabF) and β-ketoacyl-[acyl carrier protein] synthase I (FabB), while the poor pharmacokinetics has prevented its further development. In this work, thirty-two PTM derivatives were rapidly prepared via Heck, Sonogashira, and one-pot Sonogashira/cycloaddition cascade reactions based on the Gram-scale synthesis of 6-iodo PTM (4). About half of the synthesized compounds were approximately equipotent to PTM against the tested Staphylococcus aureus strains. Among them, the representative compounds 4, A4, and B8 exhibited different plasma protein binding affinity or stability in the human hepatic microsome assay and showed improved in vivo efficacy over PTM in a mouse peritonitis model. In addition, A4 was also effective in an S. aureus-infected skin mouse model. Our study not only significantly expands the known PTM derivatives with improved antibacterial activities in vivo, but showcased that C–C cross-coupling reactions are useful tools to functionalize natural product drug leads.
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Affiliation(s)
- Youchao Deng
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
| | - Yuling Li
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
| | - Zhongqing Wen
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
| | - Claudia H. Ruiz
- Departments of Molecular Medicine, The Scripps Research Institute, Jupiter, FL 33458, USA; (C.H.R.); (M.D.C.)
| | - Xiang Weng
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
| | - Michael D. Cameron
- Departments of Molecular Medicine, The Scripps Research Institute, Jupiter, FL 33458, USA; (C.H.R.); (M.D.C.)
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha 410011, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha 410011, China
- Correspondence: (Y.D.); (Y.H.)
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (Y.D.); (Y.L.); (Z.W.); (X.W.)
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha 410011, China
- Correspondence: (Y.D.); (Y.H.)
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5
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Deng Y, Sun S, Wang Y, Jia P, Li W, Wang K, Yan W. Asymmetric Synthesis of Chiral
α
‐CF
2
H Spiro[Indoline‐3,3′‐Thiophene] via Phase‐Transfer Catalyzed Sulfa‐Michael/Michael Domino Reaction. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101320] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yabo Deng
- The Institute of Pharmacology School of Basic Medical Sciences Lanzhou University Lanzhou 730000 People's Republic of China
| | - Shuo Sun
- The Institute of Pharmacology School of Basic Medical Sciences Lanzhou University Lanzhou 730000 People's Republic of China
| | - Yuqiang Wang
- School of Stomatology Lanzhou University Lanzhou 730000 People's Republic of China
| | - Pengfeng Jia
- The Institute of Pharmacology School of Basic Medical Sciences Lanzhou University Lanzhou 730000 People's Republic of China
| | - Wenguang Li
- The Institute of Pharmacology School of Basic Medical Sciences Lanzhou University Lanzhou 730000 People's Republic of China
| | - Kairong Wang
- The Institute of Pharmacology School of Basic Medical Sciences Lanzhou University Lanzhou 730000 People's Republic of China
| | - Wenjin Yan
- The Institute of Pharmacology School of Basic Medical Sciences Lanzhou University Lanzhou 730000 People's Republic of China
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6
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Li Y, Weng X, Deng Y, Pan J, Zhu S, Wen Z, Yuan Y, Li S, Shen B, Duan Y, Huang Y. Semisynthesis and Biological Evaluation of Platencin Thioether Derivatives: Dual FabF and FabH Inhibitors against MRSA. ACS Med Chem Lett 2021; 12:433-442. [PMID: 33738071 DOI: 10.1021/acsmedchemlett.0c00653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/08/2021] [Indexed: 12/28/2022] Open
Abstract
The discovery and clinical use of multitarget monotherapeutic antibiotics is regarded as a promising approach to reduce the development of antibiotic resistance. Platencin (PTN), a potent natural antibiotic initially isolated from a soil actinomycete, targets both FabH and FabF, the initiation and elongation condensing enzymes for bacterial fatty acid biosynthesis. However, its further clinical development has been hampered by poor pharmacokinetics. Herein we report the semisynthesis and biological evaluation of platencin derivatives 1-15 with potent antibacterial activity against methicillin-resistant Staphylococcus aureus in vitro. Some of these PTN analogues showed similar yet distinct interactions with FabH and FabF, as shown by molecular docking, differential scanning fluorometry, and isothermal titration calorimetry. Compounds 3, 8, 10, and 14 were further evaluated in a mouse peritonitis model, among which 8 showed in vivo antibacterial activity comparable to that of PTN. Our results suggest that semisynthetic modification of PTN is a rapid route to obtain active PTN derivatives that might be further developed as promising antibiotics against drug-resistant major pathogens.
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Affiliation(s)
- Yuling Li
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Xiang Weng
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Youchao Deng
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Jian Pan
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Saibin Zhu
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Zhongqing Wen
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Yanqiu Yuan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Shaowen Li
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Ben Shen
- Departments of Chemistry and Molecular Medicine and Natural Product Discovery Center at Scripps Research, Scripps Research, Jupiter, Florida 33458, United States
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha, Hunan 410011, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, China
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7
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Veena KS, Gopalan G, Madhukrishnan M, Varughese S, Radhakrishnan KV, Lankalapalli RS. Putative Biomimetic Route to 8-Oxabicyclo[3.2.1]octane Motif from a Humulene Sesquiterpenoid Zerumbone. Org Lett 2020; 22:6409-6413. [PMID: 32806166 DOI: 10.1021/acs.orglett.0c02220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An approach to expand the diversity of terpenes to novel polycyclic skeletons with contiguous stereogenic centers is described. An unprecedented 8-oxabicyclo[3.2.1]octane motif was obtained in quantitative yield by photoirradiation of zerumbone in the presence of a catalytic amount of Lewis acid. The vital role of light in the isomerization of double bonds in zerumbone, which ensued cyclization via tertiary carbocation intermediate, emulates a biosynthetic route. Synthetic diversification of the phototransformed product afforded epoxy derivatives with up to seven contiguous stereogenic centers and eight-member ring fused tricyclic motifs. The present work sheds light on the possible role of UV irradiation in the biosynthesis of oxo-bridged tricyclic structures from polyene terpenes.
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Affiliation(s)
- Kollery S Veena
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-695019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Greeshma Gopalan
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-695019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Murali Madhukrishnan
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-695019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Sunil Varughese
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-695019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Kokkuvayil Vasu Radhakrishnan
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-695019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Ravi S Lankalapalli
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram-695019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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8
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Wang Z, Liu X, Peng Y, Su M, Zhu S, Pan J, Shen B, Duan Y, Huang Y. Platensimycin-Encapsulated Liposomes or Micelles as Biosafe Nanoantibiotics Exhibited Strong Antibacterial Activities against Methicillin-Resistant Staphylococcus aureus Infection in Mice. Mol Pharm 2020; 17:2451-2462. [DOI: 10.1021/acs.molpharmaceut.0c00194] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Zhe Wang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Xingyun Liu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Ying Peng
- Xiangya School of Pharmaceutical Science, Central South University, Changsha, Hunan 410013, China
| | - Meng Su
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Saibin Zhu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Jian Pan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | | | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discover, Changsha, Hunan 410011, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, China
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9
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Wang HL, Li R, Li J, He J, Cao ZY, Kurtán T, Mándi A, Zheng GL, Zhang W. Alternarin A, a Drimane Meroterpenoid, Suppresses Neuronal Excitability from the Coral-Associated Fungi Alternaria sp. ZH-15. Org Lett 2020; 22:2995-2998. [PMID: 32237750 DOI: 10.1021/acs.orglett.0c00746] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Alternarin A (1), a rearranged drimane meroterpenoid characterized by a thioglycerate moiety, was isolated together with two known analogues from the coral-associated fungi Alternaria sp. ZH-15. Its structure was determined based on spectroscopic analysis, modified Mosher's method, and TDDFT/ECD calculations. In a primary cultured cortical neuronal network, compound 1 effectively inhibited the activity of spontaneous synchronous Ca2+ oscillations and 4-aminopyridine induced epileptic discharges in the low micromolar concentration range.
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Affiliation(s)
- Hong-Liang Wang
- School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, People's Republic of China.,NCO School of Army Medical University, 450 West Zhong-Shan Rd., Shijiazhuang 050000, People's Republic of China
| | - Ran Li
- School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, People's Republic of China
| | - Jiao Li
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Gao-Ke Road, Hangzhou 311402, People's Republic of China
| | - Jing He
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Long-Mian Avenue, Nanjing 211198, People's Republic of China
| | - Zheng-Yu Cao
- State Key Laboratory of Natural Medicines and Department of TCM Pharmacology, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 639 Long-Mian Avenue, Nanjing 211198, People's Republic of China
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen, POB 400, H-4002 Debrecen, Hungary
| | - Attila Mándi
- Department of Organic Chemistry, University of Debrecen, POB 400, H-4002 Debrecen, Hungary
| | - Gui-Liang Zheng
- Department of Otorhinolaryngology, Head and Neck Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kong-Jiang Road, Shanghai 200092, People's Republic of China
| | - Wen Zhang
- School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, People's Republic of China.,Tongji Hospital Affiliated to Tongji University, 389 Xin-Cun Road, Shanghai 200065, People's Republic of China
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10
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Mo XF, Xiong CF, Chen ZW, Liu C, He P, Tong HX, Yi XY. Zinc complexes supported by pyridine- N-oxide ligands: synthesis, structures and catalytic Michael addition reactions. Dalton Trans 2020; 49:12365-12371. [DOI: 10.1039/d0dt00185f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zinc complexes supported by pyridine-N-oxide ligands show highly efficient catalysis for Michael addition reaction. The NMR and MS experiments analysis displays intermediate [Zn(SR)2(HSR)4] has real catalytic activity for the addition reactions.
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Affiliation(s)
- Xiu-Fang Mo
- Hunan Provincial Key Laboratory of Chemical Power Sources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China
| | - Chang-Feng Xiong
- Hunan Provincial Key Laboratory of Chemical Power Sources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China
| | - Ze-Wen Chen
- Hunan Provincial Key Laboratory of Chemical Power Sources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China
| | - Chao Liu
- Hunan Provincial Key Laboratory of Chemical Power Sources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China
| | - Piao He
- Hunan Provincial Key Laboratory of Chemical Power Sources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China
| | - Hai-Xia Tong
- School of Chemistry and Food Engineering
- Changsha University of Science and Technology
- P. R. China
| | - Xiao-Yi Yi
- Hunan Provincial Key Laboratory of Chemical Power Sources
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China
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11
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Zhang YX, Yu HB, Xu WH, Hu B, Guild A, Zhang JP, Lu XL, Liu XY, Jiao BH. Eutypellacytosporins A-D, Meroterpenoids from the Arctic Fungus Eutypella sp. D-1. JOURNAL OF NATURAL PRODUCTS 2019; 82:3089-3095. [PMID: 31702148 DOI: 10.1021/acs.jnatprod.9b00700] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The Arctic fungus Eutypella sp. D-1, previously found to produce a variety of cytotoxic cyclopropyl-fused and cyclobutyl-fused pimarane diterpenoids when grown in the defined medium, was induced to produce unusual metabolites by growing on solid rice medium. A chemical investigation on the rice medium extract led to the isolation of four new meroterpenoids, eutypellacytosporins A-D (1-4), along with the known biogenetically related compound cytosporin D (5). The structures of the new compounds were elucidated by their detailed spectroscopic analysis and modified Mosher's method. Compounds 1-4 may be formed by the 12,32-ester linkage of two moieties, cytosporin D (5) and decipienolide A or B. All isolated compounds, except 5, showed weak cytotoxicity against DU145, SW1990, Huh7, and PANC-1 cell lines with IC50 values ranging from 4.9 to 17.1 μM.
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Affiliation(s)
- Yi-Xin Zhang
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences , Second Military Medical University , Shanghai 200433 , People's Republic of China
| | - Hao-Bing Yu
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences , Second Military Medical University , Shanghai 200433 , People's Republic of China
| | - Wei-Heng Xu
- School of Pharmacy , Second Military Medical University , Shanghai 200433 , People's Republic of China
| | - Bo Hu
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences , Second Military Medical University , Shanghai 200433 , People's Republic of China
| | - Aurora Guild
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography , University of California, San Diego , La Jolla , California 92093 , United States
| | - Jian-Peng Zhang
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences , Second Military Medical University , Shanghai 200433 , People's Republic of China
| | - Xiao-Ling Lu
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences , Second Military Medical University , Shanghai 200433 , People's Republic of China
| | - Xiao-Yu Liu
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences , Second Military Medical University , Shanghai 200433 , People's Republic of China
| | - Bing-Hua Jiao
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences , Second Military Medical University , Shanghai 200433 , People's Republic of China
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12
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Deng Y, Weng X, Li Y, Su M, Wen Z, Ji X, Ren N, Shen B, Duan Y, Huang Y. Late-Stage Functionalization of Platensimycin Leading to Multiple Analogues with Improved Antibacterial Activity in Vitro and in Vivo. J Med Chem 2019; 62:6682-6693. [PMID: 31265289 PMCID: PMC6755679 DOI: 10.1021/acs.jmedchem.9b00616] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Bacterial fatty acid synthases are promising antibacterial targets against multidrug-resistant pathogens. Platensimycin (PTM) is a potent FabB/FabF inhibitor, while its poor pharmacokinetics hampers the clinical development. In this study, a focused library of PTM derivatives was prepared through thiolysis of PTM oxirane (1), followed by various C-C cross-coupling reactions in high yields. Antibacterial screening of these compounds in vitro yielded multiple hits with improved anti-Staphylococcus activities over PTM. Among them, compounds A1, A3, A17, and A28 exhibited improved antibacterial activities over PTM against methicillin-resistant Staphylococcus aureus (MRSA) in a mouse peritonitis model. Compound A28 was further shown to be effective against MRSA infection in a mouse wound model, in comparison to mupirocin. Therefore, the facile preparation and screening of these PTM derivatives, together with their potent antibacterial activities in vivo, suggest a promising strategy to improve the antibacterial activity and pharmacokinetic properties of PTM.
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Affiliation(s)
- Youchao Deng
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Xiang Weng
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Yuling Li
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Meng Su
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Zhongqing Wen
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Xinxin Ji
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Nan Ren
- Xiangya Hospital , Central South University , Changsha , Hunan 410008 , China
| | | | - Yanwen Duan
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery , Changsha , Hunan 410011 , China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery , Changsha , Hunan 410011 , China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery , Changsha , Hunan 410011 , China
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13
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Su M, Qiu L, Deng Y, Ruiz CH, Rudolf JD, Dong LB, Feng X, Cameron MD, Shen B, Duan Y, Huang Y. Evaluation of Platensimycin and Platensimycin-Inspired Thioether Analogues against Methicillin-Resistant Staphylococcus aureus in Topical and Systemic Infection Mouse Models. Mol Pharm 2019; 16:3065-3071. [PMID: 31244223 PMCID: PMC6763203 DOI: 10.1021/acs.molpharmaceut.9b00293] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Staphylococcus aureus is one of the most common pathogens causing hospital-acquired and community-acquired infections. Methicillin-resistant S. aureus (MRSA)-formed biofilms in wounds are difficult to treat with conventional antibiotics. By targeting FabB/FabF of bacterial fatty acid synthases, platensimycin (PTM) was discovered to act as a promising natural antibiotic against MRSA infections. In this study, PTM and its previously synthesized sulfur-Michael derivative PTM-2t could reduce over 95% biofilm formation by S. aureus ATCC 29213 when used at 2 μg/mL in vitro. Topical application of ointments containing PTM or PTM-2t (2 × 4 mg/day/mouse) was successfully used to treat MRSA infections in a BABL/c mouse burn wound model. As a potential prodrug lead, PTM-2t showed improved in vivo efficacy in a mouse peritonitis model compared with PTM. Our study suggests that PTM and its analogue may be used topically or locally to treat bacterial infections. In addition, the use of prodrug strategies might be instrumental to improve the poor pharmacokinetic properties of PTM.
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Affiliation(s)
- Meng Su
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Lin Qiu
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Youchao Deng
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Claudia H. Ruiz
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, Florida 33458, United States
| | - Jeffrey D. Rudolf
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458, United States
| | - Liao-Bin Dong
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458, United States
| | - Xueqiong Feng
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
| | - Michael D. Cameron
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, Florida 33458, United States
| | - Ben Shen
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458, United States
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, Florida 33458, United States
- Department of Natural Products Library Initiative at The Scripps Research Institute, The Scripps Research Institute, Jupiter, Florida 33458, United States
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha, Hunan 410011, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, China
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14
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Qiu L, Wen Z, Li Y, Tian K, Deng Y, Shen B, Duan Y, Huang Y. Stereoselective functionalization of platensimycin and platencin by sulfa-Michael/aldol reactions. Org Biomol Chem 2019; 17:4261-4272. [PMID: 30816397 DOI: 10.1039/c9ob00324j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Bioinspired sulfa-Michael/aldol cascade reactions have been developed for the semisynthesis of sulfur-containing heterocyclic derivatives of platensimycin and platencin, with three newly formed contiguous stereogenic centers. Density functional theory calculations revealed the mechanism for the stereochemistry control. This method was used in a synthesis of a platensimycin thiophene analogue with potent antibacterial activities against Staphylococcus aureus.
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Affiliation(s)
- Lin Qiu
- Xiangya International Academy of Translational Medicine at Central South University, Changsha, Hunan 410013, China.
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15
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Deng Y, Su M, Kang D, Liu X, Wen Z, Li Y, Qiu L, Shen B, Duan Y, Huang Y. Semisynthesis of Platensimycin Derivatives with Antibiotic Activities in Mice via Suzuki-Miyaura Cross-Coupling Reactions. J Med Chem 2018; 61:11341-11348. [PMID: 30461269 DOI: 10.1021/acs.jmedchem.8b01580] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Platensimycin (PTM), originally isolated from soil bacteria Streptomyces platensis, is a potent FabF inhibitor against many Gram-positive pathogens, such as methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci. However, the further clinical development of PTM is hampered by its poor pharmacokinetic properties. In this study, 20 PTM derivatives were prepared by Suzuki-Miyaura cross-coupling reactions catalyzed by Pd (0)/C. Compared to PTM, 6-pyrenyl PTM (6t) showed improved antibacterial activity against MRSA in a mouse peritonitis model. Our results support the strategy to target the essential fatty acid synthases in major pathogens, in order to discover and develop new generations of antibiotics.
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Affiliation(s)
- Youchao Deng
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Meng Su
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Dingding Kang
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Xingyun Liu
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Zhongqing Wen
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Yuling Li
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | - Lin Qiu
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China
| | | | - Yanwen Duan
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China.,Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery , Changsha , Hunan 410011 , China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery , Changsha , Hunan 410011 , China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery , Changsha , Hunan 410011 , China
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16
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Tian K, Deng Y, Qiu L, Zhu X, Shen B, Duan Y, Huang Y. Semisynthesis and Biological Evaluation of Platensimycin Analogues with Varying Aminobenzoic Acids. ChemistrySelect 2018; 3:12625-12629. [PMID: 32232122 PMCID: PMC7105086 DOI: 10.1002/slct.201802475] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 11/19/2018] [Indexed: 11/06/2022]
Abstract
Platensimycin (PTM) is an excellent natural product drug lead against various gram-positive pathogens, including methicillin-resistant Staphylococcus aureus and vancomycin-resistant enterococci. In this study, twenty PTM derivatives with varying aminobenzoic acids were semisynthesized. In contrast to all the previous reported inactive aminobenzaote analogues, a few of them showed moderate antibacterial activities against S. aureus. Our study suggested that modification of the conserved aminobenzoic acid remains a viable approach to diversify the PTM scaffold.
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Affiliation(s)
- Kai Tian
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013 (China)
| | - Youchao Deng
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013 (China)
| | - Lin Qiu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013 (China)
| | - Xiangcheng Zhu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013 (China)
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha, Hunan 410205 (China)
| | - Ben Shen
- Departments of Chemistry and Molecular Medicine, and Natural Products Library Initiative at The Scripps Research Institute, The Scripps Research Institute, Jupiter, FL 33458 (USA)
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013 (China)
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha, Hunan 410205 (China)
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410205 (China)
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013 (China)
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410205 (China)
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17
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Deng Y, Kang D, Shi J, Zhou W, Sun A, Ju J, Zhu X, Shen B, Duan Y, Huang Y. The semi-synthesis, biological evaluation and docking analysis of the oxime, hydrazine and hydrazide derivatives of platensimycin. MEDCHEMCOMM 2018; 9:789-794. [PMID: 30108968 DOI: 10.1039/c8md00081f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 03/01/2018] [Indexed: 11/21/2022]
Abstract
A dozen oxime, hydrazine and hydrazide derivatives of platensimycin (PTM) analogues were synthesized, some of which showed strong antibacterial activities and were shown to be stable under the bioassay conditions. Docking analysis revealed that they have certain new interactions with β-ketoacyl-[acyl carrier protein] synthase II (FabF), suggesting that Schiff base formation on its terpene scaffold is an effective strategy to diversify PTM structure.
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Affiliation(s)
- Youchao Deng
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China . ;
| | - Dingding Kang
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China . ;
| | - Jie Shi
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China . ;
| | - Wenqing Zhou
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China . ;
| | - Aijun Sun
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology , Guangdong Key Laboratory of Marine Materia Medica , RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology , Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou 510301 , China
| | - Jianhua Ju
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology , Guangdong Key Laboratory of Marine Materia Medica , RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology , Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou 510301 , China
| | - Xiangcheng Zhu
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China . ; .,Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery , Changsha , Hunan 410011 , China
| | - Ben Shen
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China . ; .,Departments of Chemistry and Molecular Medicine, and Natural Products Library Initiative at The Scripps Research Institute , The Scripps Research Institute , Jupiter , Florida 33458 , USA .
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China . ; .,Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery , Changsha , Hunan 410011 , China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery , Changsha , Hunan 410011 , China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine at Central South University , Changsha , Hunan 410013 , China . ; .,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery , Changsha , Hunan 410011 , China
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