1
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Shi P, Wang Y, Liu M, Li Y, Zhu J, Shen Y, Wang H. Discovery and Heterologous Production of Tetrapetalones Provide Insights into the Formation of the Tetracyclic System. JOURNAL OF NATURAL PRODUCTS 2024; 87:98-103. [PMID: 38170464 DOI: 10.1021/acs.jnatprod.3c00813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Tetrapetalones make up a unique class of pentaketide ansamycins that feature a tetracyclic skeleton and exhibit potent inhibitory activities against soybean lipoxygenase. However, a detailed biosynthetic route to tetrapetalones has not been published. Herein we report the activation of the tetrapetalones' biosynthetic gene cluster (tpt) in Streptomyces sp. S10 by promoter engineering along with constitutive expression of pathway-specific regulator genes, leading to the discovery of seven new derivatives, tetrapetalones E-K (2-8), and the known tetrapetalone A (1). In vivo gene deletion experiments and heterologous expression of the minimized tpt cluster in Streptomyces albus J1074 suggest that the tetracyclic system of tetrapetalones is probably formed spontaneously, and the regioselective glycosylation of tetrapetalones at the C-9 hydroxy group with d-rhamnose or d-rhodinose was catalyzed by the glycosyltransferase Tpt14.
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Affiliation(s)
- Peng Shi
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Yu Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Mengyujie Liu
- Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, People's Republic of China
| | - Yaoyao Li
- Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, People's Republic of China
| | - Jing Zhu
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Yuemao Shen
- Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, People's Republic of China
| | - Haoxin Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
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2
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Dong YQ, Wang K, Zhuo CX. Molybdenum-Catalyzed Intermolecular Deoxygenative Cross-Coupling Reactions of 1,2-Diketones with α-Ketoamides. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuan-Qing Dong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Kai Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
| | - Chun-Xiang Zhuo
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China
- Shenzhen Research Institute of Xiamen University, Shenzhen 518057, P. R. China
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3
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Liu C, Zhang Z, Fukaya K, Urabe D, Harunari E, Oku N, Igarashi Y. Catellatolactams A-C, Plant Growth-Promoting Ansamacrolactams from a Rare Actinomycete of the Genus Catellatospora. JOURNAL OF NATURAL PRODUCTS 2022; 85:1993-1999. [PMID: 35948055 DOI: 10.1021/acs.jnatprod.2c00331] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Catellatolactams A-C (1-3), three novel ansamacrolactams, were isolated from the culture extract of an underexplored rare actinomycete of the genus Catellatospora. Spectroscopic and spectrometric analyses by NMR and MS elucidated the structure of 1 to be a lactamized pentaketide presumably extended on a 3-amino-5-hydroxybenzoic acid starter unit. Compounds 2 and 3 further received epoxidation and intramolecular cross-linking to incorporate a 2-indolinone unit, with a 3-amino-5-hydroxybenzoic acid pendant on 3. The absolute configurations of 2 and 3 were unequivocally established to both be 2S,6R,7R by comparison of the experimental NMR chemical shifts and ECD spectra with those predicted by DFT-based quantum chemical calculation. While 1-3 showed no appreciable antimicrobial activity or cytotoxicity, root elongation of germinated lettuce seeds was promoted by 2 and 3 at 1-10 μM.
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Affiliation(s)
- Chang Liu
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Zhiwei Zhang
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Keisuke Fukaya
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Daisuke Urabe
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Enjuro Harunari
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Naoya Oku
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Yasuhiro Igarashi
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
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4
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Frontier AJ, Sinclair PP. Merging Strategy, Improvisation, and Conversation to Solve Problems in Target Synthesis. Acc Chem Res 2021; 54:1817-1829. [PMID: 33705115 DOI: 10.1021/acs.accounts.0c00804] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Total synthesis has long been depicted as the quest to conquer the structures created by nature, requiring an unflinching, single-minded devotion to the task. The goal is achieved by chemists with grit, strength of will, and a competitive spirit. While there is some truth to this viewpoint, it does not fully capture the rich experiences gained in this research realm. In our lab, strategic planning, improvisation, and conversation have worked in concert to enable progress. This Account summarizes our efforts to synthesize four different bioactive targets: merrilactone A, rocaglamide, phomactin A, and tetrapetalone A. Certain missteps were integral to success in these synthetic projects. As such, we include the hiccups, and their roles in the evolution of the strategies, along with the results that aligned with our expectations.Two of these projects (merrilactone A and rocaglamide) culminated in the total synthesis of the targets. The challenges presented by merrilactone A spawned a new design strategy for pentannulation using Nazarov cyclization chemistry. This work demonstrated that Lewis acid catalysis is often a viable electrocyclization strategy in activated, polarized pentadienyl cation intermediates. We sought to apply the same logic to the rocaglamide target, but precursors we prepared did not behave according to plan. This situation pushed us to adapt our approach to match the innate reactivity of the substrate, resulting in an on-the-spot improvisation that was not only integral to the success of the project but also expanded our understanding of pentadienyl cation chemistry. In the other two projects (phomactin A and tetrapetalone A), we did not complete a total synthesis but did build the polycyclic core of the target. Even though the hetero [4 + 2] cycloaddition plan for assembling the macrocyclic oxadecalin ring system of phomactin A failed, the original experimental design still enabled us to solve the problem. Through a wholly unanticipated series of events, our focus on the oxadecalin ring system primed us for the discovery of a sequential iodoaldol/oxa-Michael sequence, using the original [4 + 2] building blocks. Then, the bridging ring present in phomactin A demanded we implement this sequence in a transannular fashion. Finally, our successful synthesis of the tetrapetalone core was enabled by consultations with others in the community. Each bond formation seemed to require different expertise, and in three separate instances (C-N cross-coupling, diastereoselective ring-closing metathesis, and oxidative dearomatization) synthetic challenges were overcome through conversation and collaboration.In our experience, the amount of creative power we summon during a target synthesis project correlates directly with the magnitude of the structural challenges we face. When reactivity surprises us, we analyze the problem anew, consult with colleagues, and improvise with the tools at hand. The inevitable misbehavior of a complex system is a strong motivating force, and one that has helped to shape our research program for nearly two decades.
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Affiliation(s)
- Alison J. Frontier
- Department of Chemistry, University of Rochester, 120 Trustee Road, Rochester New York 14611, United States
| | - Paul P. Sinclair
- Department of Chemistry, University of Rochester, 120 Trustee Road, Rochester New York 14611, United States
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5
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Chandra G, Patel S. Molecular Complexity from Aromatics: Recent Advances in the Chemistry of
para
Quinol and Masked
para
‐Quinone Monoketal. ChemistrySelect 2020. [DOI: 10.1002/slct.202003802] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Girish Chandra
- Department of Chemistry School of Physical and Chemical Sciences Central University of South Bihar SH-7, Gaya-Panchanpur Road Gaya Bihar India 824236
| | - Samridhi Patel
- Department of Chemistry School of Physical and Chemical Sciences Central University of South Bihar SH-7, Gaya-Panchanpur Road Gaya Bihar India 824236
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7
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Muszak D, Łabuzek B, Brela MZ, Twarda-Clapa A, Czub M, Musielak B, Surmiak E, Holak TA. The synthesis and characterization of tetramic acid derivatives as Mdm2-p53 inhibitors. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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8
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Bai WJ, Pettus TRR. Synthetic Studies toward the Tetrapetalones: Diastereoselective Construction of a Putative Intermediate. Org Lett 2018; 20:901-904. [PMID: 29381370 DOI: 10.1021/acs.orglett.7b03500] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A strategy toward tetrapetalones was explored including a site-selective ethylenation of the silyl enol ether A to afford a quaternary stereocenter that serves in a stereogenic capacity. Regio- and diastereoselective reactions were observed in conjunction with the oxidative formation of cation B, which included subsequent selective formation of either carbon-oxygen or carbon-carbon bonds at the δ or ζ position on the seven-membered ring. The fourth ring was formed using a Stetter reaction.
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Affiliation(s)
- Wen-Ju Bai
- Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States
| | - Thomas R R Pettus
- Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States
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9
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Dhanjee HH, Kobayashi Y, Buergler JF, McMahon TC, Haley MW, Howell JM, Fujiwara K, Wood JL. Total Syntheses of (+)- and (−)-Tetrapetalones A and C. J Am Chem Soc 2017; 139:14901-14904. [DOI: 10.1021/jacs.7b09358] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Heemal H. Dhanjee
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - Yutaka Kobayashi
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - Jonas F. Buergler
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - Travis C. McMahon
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - Matthew W. Haley
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - Jennifer M. Howell
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - Koichi Fujiwara
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
| | - John L. Wood
- Department of Chemistry and
Biochemistry, Baylor University, One Bear Place 97348, Waco, Texas 76798, United States
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Yang S, Xi Y, Chen J, Yang Z. Mechanistic Study of SmI2-Mediated Reformatsky Reaction for Macrolactam Formation Using a Cyclopropyl Group as a Probe. Isr J Chem 2016. [DOI: 10.1002/ijch.201600104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shouliang Yang
- Key Laboratory of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); College of Chemistry and Molecular Engineering and; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 P. R. China
| | - Yumeng Xi
- Key Laboratory of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); College of Chemistry and Molecular Engineering and; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 P. R. China
| | - Jiahua Chen
- Key Laboratory of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); College of Chemistry and Molecular Engineering and; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 P. R. China
| | - Zhen Yang
- Key Laboratory of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); College of Chemistry and Molecular Engineering and; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 P. R. China
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 P. R. China
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11
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Synthetic studies toward tetrapetalone A: attempted palladium π-allyl cascades toward a fused tricyclic intermediate. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Abstract
With incredible bioactivities and fascinating structural complexities, tetramic acid- (TA-) containing natural products have attracted favorable attention among the organic chemistry community. Although the construction of the TA core is usually straightforward, the intricate C3-side chain sometimes asks for some deliberative strategy so as to fulfill an elegant total synthesis. This review mainly covers some exceptional synthetic examples for each type of natural product in recent years, showcasing the great achievements as well as unsettled obstacles in this area, in the hope of accelerating the synthetic and biological investigations for this unique type of natural product.
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13
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Carlsen P, Jiang C, Herrick IR, Frontier AJ. Studies toward the AB ring system of the tetrapetalone natural products. Tetrahedron 2015; 71:5886-5896. [PMID: 26309334 DOI: 10.1016/j.tet.2015.05.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthetic efforts toward the rapid assembly of the AB ring system of the tetrapetalones is described. Key to this work was the use of [3+2] cycloaddition/oxidative extrusion methodology to furnish functionalized aryl enones. The Nazarov cyclization of these substrates was examined, and optimized to generate the AB ring carbon skeleton. Then, Pd-catalyzed cross-coupling were conducted, and conditions were identified that enabled installation of the requisite C14-N bond.
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Affiliation(s)
- Peter Carlsen
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| | - Chao Jiang
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| | - Ildiko R Herrick
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
| | - Alison J Frontier
- Department of Chemistry, University of Rochester, Rochester, NY 14627, USA
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14
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Armaly AM, DePorre YC, Groso EJ, Riehl PS, Schindler CS. Discovery of Novel Synthetic Methodologies and Reagents during Natural Product Synthesis in the Post-Palytoxin Era. Chem Rev 2015; 115:9232-76. [DOI: 10.1021/acs.chemrev.5b00034] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ahlam M. Armaly
- Department of Chemistry, University of Michigan, 930 North
University Avenue, Ann Arbor, Michigan 48109, United States
| | - Yvonne C. DePorre
- Department of Chemistry, University of Michigan, 930 North
University Avenue, Ann Arbor, Michigan 48109, United States
| | - Emilia J. Groso
- Department of Chemistry, University of Michigan, 930 North
University Avenue, Ann Arbor, Michigan 48109, United States
| | - Paul S. Riehl
- Department of Chemistry, University of Michigan, 930 North
University Avenue, Ann Arbor, Michigan 48109, United States
| | - Corinna S. Schindler
- Department of Chemistry, University of Michigan, 930 North
University Avenue, Ann Arbor, Michigan 48109, United States
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15
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Pelkey ET, Pelkey SJ, Greger JG. De Novo Synthesis of 3-Pyrrolin-2-Ones. ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Carlsen PN, Mann TJ, Hoveyda AH, Frontier AJ. Synthesis of (±)-tetrapetalone A-Me aglycon. Angew Chem Int Ed Engl 2014; 53:9334-8. [PMID: 25045072 PMCID: PMC4260470 DOI: 10.1002/anie.201404410] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Indexed: 11/07/2022]
Abstract
The first synthesis of (±)-tetrapetalone A-Me aglycon is described. Key bond-forming reactions include Nazarov cyclization, a ring-closing metathesis promoted with complete diastereoselectivity by a chiral molybdenum-based complex, tandem conjugate reduction/intramolecular aldol cyclization, and oxidative dearomatization.
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Affiliation(s)
- Peter N. Carlsen
- Department of Chemistry, University of Rochester, Rochester, NY, 14627 (USA)
| | - Tyler J. Mann
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467 (USA)
| | - Amir H. Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467 (USA)
| | - Alison J. Frontier
- Department of Chemistry, University of Rochester, Rochester, NY, 14627 (USA)
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17
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Carlsen PN, Mann TJ, Hoveyda AH, Frontier AJ. Synthesis of (±)-Tetrapetalone A-Me Aglycon. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201404410] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Zhang J, Qian Z, Wu X, Ding Y, Li J, Lu C, Shen Y. Juanlimycins A and B, Ansamycin Macrodilactams from Streptomyces sp. Org Lett 2014; 16:2752-5. [PMID: 24797062 DOI: 10.1021/ol501072t] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juanli Zhang
- Key
Laboratory of Chemical Biology (Ministry of Education), School of
Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Zhengyi Qian
- State
Key Laboratory of Microbial Technology, School of Life Sciences, Shandong University, No. 27 South Shanda Road, Jinan, Shandong 250100, PR China
| | - Xingkang Wu
- Key
Laboratory of Chemical Biology (Ministry of Education), School of
Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Yanjiao Ding
- Key
Laboratory of Chemical Biology (Ministry of Education), School of
Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Jianfang Li
- Key
Laboratory of Chemical Biology (Ministry of Education), School of
Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan, Shandong 250012, PR China
- School
of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, PR China
| | - Chunhua Lu
- Key
Laboratory of Chemical Biology (Ministry of Education), School of
Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan, Shandong 250012, PR China
| | - Yuemao Shen
- Key
Laboratory of Chemical Biology (Ministry of Education), School of
Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan, Shandong 250012, PR China
- State
Key Laboratory of Microbial Technology, School of Life Sciences, Shandong University, No. 27 South Shanda Road, Jinan, Shandong 250100, PR China
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20
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Weaver MG, Bai WJ, Jackson SK, Pettus TRR. Diels-Alder construction of regiodifferentiated meta-amino phenols and derivatives. Org Lett 2014; 16:1294-7. [PMID: 24524325 PMCID: PMC3993616 DOI: 10.1021/ol4034447] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthetic access to regiodifferentiated meta-amino phenols is described. The strategy relies upon distinct deprotonation conditions to afford regioisomeric thermodynamic and kinetic dienes that undergo a tandem Diels-Alder and retro-Diels-Alder sequence with assorted acetylenic dienophiles to afford a range of aromatic products.
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Affiliation(s)
- Marisa G Weaver
- Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106-9510, United States
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21
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Mo X, Li Q, Ju J. Naturally occurring tetramic acid products: isolation, structure elucidation and biological activity. RSC Adv 2014. [DOI: 10.1039/c4ra09047k] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Natural products containing the tetramic acid core scaffold have been isolated from an assortment of terrestrial and marine species and often display wide ranging and potent biological activities including antibacterial, antiviral and antitumoral activities.
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Affiliation(s)
- Xuhua Mo
- Shandong Key Laboratory of Applied Mycology
- School of Life Sciences
- Qingdao Agricultural University
- Qingdao, China
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology
| | - Qinglian Li
- 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
| | - 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
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23
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Yang S, Xi Y, Zhu R, Wang L, Chen J, Yang Z. Asymmetric Total Syntheses of Ansamacrolactams (+)-Q-1047H-A-A and (+)-Q-1047H-R-A. Org Lett 2013; 15:812-5. [DOI: 10.1021/ol400038h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Shouliang Yang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yumeng Xi
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Rong Zhu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Lin Wang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Jiahua Chen
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Zhen Yang
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China, and Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
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24
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Bai WJ, Jackson SK, Pettus TRR. Mild Construction of 3-Methyl Tetramic Acids Enabling a Formal Synthesis of Palau’imide. Org Lett 2012; 14:3862-5. [DOI: 10.1021/ol301556a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wen-Ju Bai
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Stephen K. Jackson
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Thomas R. R. Pettus
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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Marcus AP, Sarpong R. Synthesis of the Tetracyclic Core of Tetrapetalone A Enabled by a Pyrrole Reductive Alkyation. Org Lett 2010; 12:4560-3. [DOI: 10.1021/ol1018536] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrew P. Marcus
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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Sugiyama Y, Yoshida K, Abe N, Hirota A. Soybean lipoxygenase inhibitory and DPPH radical-scavenging activities of aspernolide A and butyrolactones I and II. Biosci Biotechnol Biochem 2010; 74:881-3. [PMID: 20378968 DOI: 10.1271/bbb.90918] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Aspernolide A and butyrolactones I and II showed inhibitory activities against soybean lipoxygenase. All of them also had DPPH (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging activity. An analysis of the mechanism for radical scavenging allowed us to deduce that aspernolide A was converted to a quinone methide by a reaction with two molecules of the DPPH radical.
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Affiliation(s)
- Yasumasa Sugiyama
- Laboratory of Applied Microbiology, School of Food and Nutritional Sciences, University of Shizuoka, Japan.
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Elyashberg M, Williams AJ, Blinov K. Structural revisions of natural products by Computer-Assisted Structure Elucidation (CASE) systems. Nat Prod Rep 2010; 27:1296-328. [DOI: 10.1039/c002332a] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Li C, Li X, Hong R. Synthetic Study on Tetrapetalones: Stereoselective Cyclization of N-Acyliminium Ion To Construct Substituted 1-Benzazepines. Org Lett 2009; 11:4036-9. [DOI: 10.1021/ol901349b] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cheng Li
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China
| | - Xinyu Li
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China
| | - Ran Hong
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China
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Marcus A, Lee A, Davis R, Tantillo D, Sarpong R. Pronounced Steric Effects of Substituents in the Nazarov Cyclization of Aryl Dienyl Ketones. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801542] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Marcus A, Lee A, Davis R, Tantillo D, Sarpong R. Pronounced Steric Effects of Substituents in the Nazarov Cyclization of Aryl Dienyl Ketones. Angew Chem Int Ed Engl 2008; 47:6379-83. [DOI: 10.1002/anie.200801542] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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A new method for determining positions of phenolic hydroxyl groups through silylation and application of H(Si)C triple-resonance NMR experiments. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.08.111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Nicolaou KC, Snyder SA. Chasing molecules that were never there: misassigned natural products and the role of chemical synthesis in modern structure elucidation. Angew Chem Int Ed Engl 2007; 44:1012-1044. [PMID: 15688428 DOI: 10.1002/anie.200460864] [Citation(s) in RCA: 472] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Over the course of the past half century, the structural elucidation of unknown natural products has undergone a tremendous revolution. Before World War II, a chemist would have relied almost exclusively on the art of chemical synthesis, primarily in the form of degradation and derivatization reactions, to develop and test structural hypotheses in a process that often took years to complete when grams of material were available. Today, a battery of advanced spectroscopic methods, such as multidimensional NMR spectroscopy and high-resolution mass spectrometry, not to mention X-ray crystallography, exist for the expeditious assignment of structures to highly complex molecules isolated from nature in milligram or sub-milligram quantities. In fact, it could be argued that the characterization of natural products has become a routine task, one which no longer even requires a reaction flask! This Review makes the case that imaginative detective work and chemical synthesis still have important roles to play in the process of solving nature's most intriguing molecular puzzles.
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA, Fax: (+1) 858-784-2469
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Scott A Snyder
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA, Fax: (+1) 858-784-2469
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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Abstract
The biosynthesis of tetrapetalones (tetrapetalones A, B, C, and D) in Streptomyces sp. USF-4727 was studied by feeding experiments with [1-13C] sodium propanoate, [1-13C] sodium butanoate, [carbonyl-13C] 3-amino-5-hydroxybenzoic acid (AHBA) hydrochloride, and [1-13C] glucose, followed by analysis of the 13C-NMR spectra. These feeding experiments revealed that the four tetrapetalones were polyketide compounds constructed from propanoate, butanoate, AHBA, and glucose. The tetrapetalone biosynthetic pathway was also suggested in this study. In this pathway, tetrapetalone A (1) is synthesized by polyketide synthase (PKS) using AHBA as a starter unit, then the side chain of 1 is subjected to acetoxylation to produce tetrapetalone B (2). Additionally, 1 is oxidized and transformed into tetrapetalone C (3). In a similar way, 2 is converted to tetrapetalone D (4). Therefore, the biosynthetic relationship of the four tetrapetalones was indicated.
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Affiliation(s)
- Toshikazu Komoda
- Laboratory of Applied Microbiology, School of Food and Nutritional Sciences, University of Shizuoka, Shizuoka, Japan 422-8526.
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Wang X, Porco JA. Synthesis of the Tetracyclic Core of the Tetrapetalones through Transannular Oxidative [4+3] Cyclization. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500247] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wang X, Porco JA. Synthesis of the Tetracyclic Core of the Tetrapetalones through Transannular Oxidative [4+3] Cyclization. Angew Chem Int Ed Engl 2005; 44:3067-71. [PMID: 15832389 DOI: 10.1002/anie.200500247] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiang Wang
- Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA
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Nicolaou KC, Snyder SA. Die Jagd auf Moleküle, die nie existiert haben: Falsch zugeordnete Naturstoffstrukturen und die Rolle der chemischen Synthese in der modernen Strukturaufklärung. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200460864] [Citation(s) in RCA: 130] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- K. C. Nicolaou
- Department of Chemistry und The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA, Fax: (+1) 858‐784‐2469
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Scott A. Snyder
- Department of Chemistry und The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA, Fax: (+1) 858‐784‐2469
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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Abstract
The short history, specific features and future prospects of research of microbial metabolites, including antibiotics and other bioactive metabolites, are summarized. The microbial origin, diversity of producing species, functions and various bioactivities of metabolites, unique features of their chemical structures are discussed, mainly on the basis of statistical data. The possible numbers of metabolites may be discovered in the future, the problems of dereplication of newly isolated compounds as well as the new trends and prospects of the research are also discussed.
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Affiliation(s)
- János Bérdy
- IVAX Drug Research Institute Ltd, H-1325, Budapest, Hungary. [corrected]
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Komoda T, Kishi M, Abe N, Sugiyama Y, Hirota A. Novel lipoxygenase inhibitors, tetrapetalone B, C, and D from Streptomyces sp. Biosci Biotechnol Biochem 2004; 68:903-8. [PMID: 15118321 DOI: 10.1271/bbb.68.903] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Three novel lipoxygenase inhibitors, tetrapetalone B (2, C(28)H(35)NO(9)), C (3, C(26)H(34)NO(8)), and D (4, C(28)H(36)NO(10)), were isolated from a culture broth of Streptomyces sp. USF-4727 that produced a lipoxygenase inhibitor tetrapetalone A (1) simultaneously. Each chemical structure was revealed by spectroscopic evidence, this suggests that these three compounds are structurally related to 1. They had a tetracyclic skeleton and a beta-D-rhodinosyl moiety. Tetrapetalone B, C, and D inhibited soybean lipoxygenase with IC(50): 320, 360, and 340 microM respectively.
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Affiliation(s)
- Toshikazu Komoda
- Laboratory of Applied Microbiology, School of Food and Nutritional Sciences, University of Shizuoka, Yada, Japan
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