1
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Zhu J, Yan J, Wang F, Zhang L, Li J, Cheng M, Yang L, Liu Y. Gold-Catalyzed Oxidative Rearrangement Strategy to Yield 2-Hydroxycyclohepta-1,3-diene-1-carbonyl Compounds. J Org Chem 2024; 89:8734-8744. [PMID: 38814709 DOI: 10.1021/acs.joc.4c00648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
A gold-catalyzed oxidative rearrangement of propargyl alcohols, derived from commercially available cyclohex-2-en-1-ones and alkynes, was successfully developed for the efficient synthesis of seven-membered rings. Thorough investigations were conducted to optimize the reaction conditions and evaluate its compatibility with various functional groups. Additionally, this methodology was applied to the formal total synthesis of guanacastepene A, demonstrating its practical utility in complex natural product synthesis. This versatile and efficient approach opens up new possibilities for the construction of diverse seven-membered ring systems, providing valuable building blocks for further exploration in drug discovery and the synthesis of intricate molecules.
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Affiliation(s)
- Jiang Zhu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Jianghao Yan
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Fudong Wang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Lianjie Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Jiaji Li
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Lu Yang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China
- Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
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2
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Zhao S, Shen Z, Zhai Z, Yin R, Xu D, Wang M, Wang Q, Peng YL, Zhou L, Lai D. Elucidation of Palmarumycin Spirobisnaphthalene Biosynthesis Reveals a Set of Previously Unrecognized Oxidases and Reductases. Angew Chem Int Ed Engl 2024; 63:e202401979. [PMID: 38581278 DOI: 10.1002/anie.202401979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 03/27/2024] [Accepted: 04/05/2024] [Indexed: 04/08/2024]
Abstract
Spirobisnaphthalenes (SBNs) are a class of highly oxygenated, fungal bisnaphthalenes containing a unique spiroketal bridge, that displayed diverse bioactivities. Among the reported SBNs, palmarumycins are the major type, which are precursors for the other type of SBNs structurally. However, the biosynthesis of SBNs is unclear. In this study, we elucidated the biosynthesis of palmarumycins, using gene disruption, heterologous expression, and substrate feeding experiments. The biosynthetic gene cluster for palmarumycins was identified to be distant from the polyketide synthase gene cluster, and included two cytochrome P450s (PalA and PalB), and one short chain dehydrogenase/reductase (PalC) encoding genes as key structural genes. PalA is an unusual, multifunctional P450 that catalyzes the oxidative dimerization of 1,8-dihydroxynaphthalene to generate the spiroketal linkage and 2,3-epoxy group. Chemical synthesis of key intermediate and in vitro biochemical assays proved that the oxidative dimerization proceeded via a binaphthyl ether. PalB installs the C-5 hydroxy group, widely found in SBNs. PalC catalyzes 1-keto reduction, the reverse 1-dehydrogenation, and 2,3-epoxide reduction. Moreover, an FAD-dependent oxidoreductase, encoded by palD, which locates outside the cluster, functions as a 1-dehydrogenase. These results provided the first genetic and biochemical evidence for the biosynthesis of palmarumycin SBNs.
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Affiliation(s)
- Siji Zhao
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
| | - Zhen Shen
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
| | - Ziqi Zhai
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
| | - Ruya Yin
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
| | - Dan Xu
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
| | - Mingan Wang
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
| | - Qi Wang
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
| | - You-Liang Peng
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
| | - Ligang Zhou
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
| | - Daowan Lai
- Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, No. 2 Yuanmingyuan west Road, Haidian district, 100193, Beijing, China
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3
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Shcherbinin VA, Nasibullina ER, Mendogralo EY, Uchuskin MG. Natural epoxyquinoids: isolation, biological activity and synthesis. An update. Org Biomol Chem 2023; 21:8215-8243. [PMID: 37812083 DOI: 10.1039/d3ob01141k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Epoxyquinoids are of continuing interest due to their wide natural distribution and diverse biological activities, including, but not limited to, antibacterial, antifungal, anticancer, enzyme inhibitory, and others. The last review on their total synthesis was published in 2017. Since then, almost 100 articles have been published on their isolation from nature and their biological profile. In addition, the review specifically considers synthesis, including total and enantioselective, as well as the development of shorter approaches for the construction of epoxyquinoids with complex chemical architecture. Thus, this review focuses on progress in this area in order to stimulate further research.
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Affiliation(s)
- Vitaly A Shcherbinin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Pr. 47, 119334 Moscow, Russian Federation
| | - Ekaterina R Nasibullina
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russian Federation.
| | - Elena Y Mendogralo
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russian Federation.
| | - Maxim G Uchuskin
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russian Federation.
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4
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Ando Y, Ogawa D, Ohmori K, Suzuki K. Enantioselective Total Syntheses of Preussomerins: Control of Spiroacetal Stereogenicity by Photochemical Reaction of a Naphthoquinone through 1,6-Hydrogen Atom Transfer. Angew Chem Int Ed Engl 2023; 62:e202213682. [PMID: 36446739 PMCID: PMC10107447 DOI: 10.1002/anie.202213682] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/16/2022] [Accepted: 11/29/2022] [Indexed: 12/03/2022]
Abstract
We report the enantioselective total syntheses of preussomerins EG1 , EG2 , and EG3 . The key transformation is a stereospecific photochemical reaction involving 1,6-hydrogen atom transfer to achieve retentive replacement of a C-H with a C-O bond, enabling otherwise-difficult control of the spiroacetal stereogenic center.
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Affiliation(s)
- Yoshio Ando
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Daichi Ogawa
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Ken Ohmori
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Keisuke Suzuki
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
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5
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Xu L, Ma H, An X, Li Y, Zhang Q, Liu X, Wang M. Total synthesis, structure revision and cytotoxic activity of Sch 53825 and its derivatives. RSC Adv 2022; 12:17629-17636. [PMID: 35765427 PMCID: PMC9194939 DOI: 10.1039/d2ra02898k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 06/01/2022] [Indexed: 11/25/2022] Open
Abstract
The first total synthesis of Sch 53825 (14) was achieved in 12 steps from 5-hydroxy-1-tetralone in 16% overall yield through N-benzyl cinchoninium chloride-catalyzed asymmetric epoxidation and a Mitsunobu reaction as the key steps. On this basis, the synthesis of palmarumycin B6 was improved using the same raw material with 6 steps and 32% overall yield. Also, three new analogues with two chlorine atoms were synthesized. Their structures were characterized by 1H, 13C NMR, HR-ESI-MS and X-ray diffraction data. The structure of natural Sch 53825 was revised as an epimer of compound 1 with the anti-hydroxy epoxide at C-4. Their cytotoxic activities against several tumor cell lines (HCT116, U251, BGC823, Huh-7 and PC9) showed that compound 11 exhibited excellent cytotoxicity against above mentioned cancer cell lines with IC50 < 0.5 μM. The first total synthesis of Sch 53825 (14) was achieved in 12 steps from 5-hydroxy-1-tetralone in 16% overall yield through N-benzyl cinchoninium chloride-catalyzed asymmetric epoxidation and a Mitsunobu reaction as the key steps.![]()
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Affiliation(s)
- Leichuan Xu
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Haoyun Ma
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Xinkun An
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Yihao Li
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Qian Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Xinlei Liu
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
| | - Mingan Wang
- Department of Applied Chemistry, College of Science, China Agricultural University Beijing 100193 People's Republic of China
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6
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Majhi S. Applications of Norrish type I and II reactions in the total synthesis of natural products: a review. Photochem Photobiol Sci 2021; 20:1357-1378. [PMID: 34537894 DOI: 10.1007/s43630-021-00100-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 09/06/2021] [Indexed: 01/12/2023]
Abstract
Natural products and their analogue have played a key role in the drug discovery and development process. In the laboratory, the total synthesis of secondary metabolites is very useful in ascertaining the hypothetical complex structure of molecules of natural origin. Total synthesis of natural products using Norrish type I and II reactions as a crucial step has been explored in this overview. Norrish reactions are important photo-induced transformations of carbonyl compounds in organic synthetic chemistry and are connected in numerous industrially and biologically relevant procedures and the processing of carbonyl compounds in the atmosphere. The present review tries to focus on the brilliant applications of Norrish type I and II photochemical reactions as a key step in the total synthesis of natural products and highlights on natural sources, structures, and biological activities of the promising natural products for the first time elegantly.
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Affiliation(s)
- Sasadhar Majhi
- Department of Chemistry (UG and PG Department), Triveni Devi Bhalotia College, Kazi Nazrul University, Raniganj, 713347, West Bengal, India.
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7
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Shu X, Chen CC, Yu T, Yang J, Hu X. Enantioselective Total Synthesis of (-)-Spiroxins A, C, and D. Angew Chem Int Ed Engl 2021; 60:18514-18518. [PMID: 34138512 DOI: 10.1002/anie.202105921] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/03/2021] [Indexed: 11/10/2022]
Abstract
Spiroxins A, C, and D are metabolites that have been identified in the marine fungal strain LL-37H248. Their unique polycyclic structures and intriguing biological activities make them attractive targets for the synthetic community. Based on a scalable enantioselective epoxidation of 5-substituted naphthoquinone, an oxidation/spiroketalization cascade, ortho-selective chlorination of the phenol unit, and oxime-ester-directed acetoxylation, an enantioselective total synthesis of (-)-spiroxins A and C and the first total synthesis of (-)-spiroxin D have been achieved.
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Affiliation(s)
- Xin Shu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Chong-Chong Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Tao Yu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Jiayi Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Xiangdong Hu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
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8
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Shu X, Chen C, Yu T, Yang J, Hu X. Enantioselective Total Synthesis of (−)‐Spiroxins A, C, and D. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Xin Shu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an 710127 China
| | - Chong‐Chong Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an 710127 China
| | - Tao Yu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an 710127 China
| | - Jiayi Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an 710127 China
| | - Xiangdong Hu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry & Materials Science Northwest University Xi'an 710127 China
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9
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Wang C, Lu H, Lan J, Zaman KHA, Cao S. A Review: Halogenated Compounds from Marine Fungi. Molecules 2021; 26:458. [PMID: 33467200 PMCID: PMC7830638 DOI: 10.3390/molecules26020458] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/11/2022] Open
Abstract
Marine fungi produce many halogenated metabolites with a variety of structures, from acyclic entities with a simple linear chain to multifaceted polycyclic molecules. Over the past few decades, their pharmaceutical and medical application have been explored and still the door is kept open due to the need of new drugs from relatively underexplored sources. Biological properties of halogenated compounds such as anticancer, antiviral, antibacterial, anti-inflammatory, antifungal, antifouling, and insecticidal activity have been investigated. This review describes the chemical structures and biological activities of 217 halogenated compounds derived mainly from Penicillium and Aspergillus marine fungal strains reported from 1994 to 2019.
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Affiliation(s)
- Cong Wang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China; (H.L.); (J.L.)
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i, Hilo, HI 96720, USA;
| | - Huanyun Lu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China; (H.L.); (J.L.)
| | - Jianzhou Lan
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China; (H.L.); (J.L.)
| | - KH Ahammad Zaman
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i, Hilo, HI 96720, USA;
| | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i, Hilo, HI 96720, USA;
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10
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Ando Y. Total Syntheses of Structurally Complex Natural Products: Potential Reactivity of Organic Molecules. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yoshio Ando
- Department of Chemistry, School of Science, Tokyo Institute of Technology
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11
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Wisetsai A, Lekphrom R, Boonmak J, Youngme S, Schevenels FT. Spiroaxillarone A, a Symmetric Spirobisnaphthalene with an Original Skeleton from Cyanotis axillaris. Org Lett 2019; 21:8344-8348. [DOI: 10.1021/acs.orglett.9b03122] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Awat Wisetsai
- Natural Products Research Unit, Department of Chemistry, and Center for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Ratsami Lekphrom
- Natural Products Research Unit, Department of Chemistry, and Center for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Jaursup Boonmak
- Materials Chemistry Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sujittra Youngme
- Materials Chemistry Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Florian T. Schevenels
- Natural Products Research Unit, Department of Chemistry, and Center for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
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12
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Ando Y, Tanaka D, Sasaki R, Ohmori K, Suzuki K. Stereochemical Dichotomy in Two Competing Cascade Processes: Total Syntheses of Both Enantiomers of Spiroxin A. Angew Chem Int Ed Engl 2019; 58:12507-12513. [DOI: 10.1002/anie.201906762] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Yoshio Ando
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
| | - Daisuke Tanaka
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
| | - Ryota Sasaki
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
| | - Ken Ohmori
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
| | - Keisuke Suzuki
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
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13
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Ando Y, Tanaka D, Sasaki R, Ohmori K, Suzuki K. Stereochemical Dichotomy in Two Competing Cascade Processes: Total Syntheses of Both Enantiomers of Spiroxin A. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906762] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yoshio Ando
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
| | - Daisuke Tanaka
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
| | - Ryota Sasaki
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
| | - Ken Ohmori
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
| | - Keisuke Suzuki
- Department of ChemistryTokyo Institute of Technology 2-12-1 O-okayama Meguro Tokyo 152-8551 Japan
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14
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15
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Ando Y, Hanaki A, Sasaki R, Ohmori K, Suzuki K. Stereospecificity in Intramolecular Photoredox Reactions of Naphthoquinones: Enantioselective Total Synthesis of (−)-Spiroxin C. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705562] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yoshio Ando
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
| | - Atsuko Hanaki
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
| | - Ryota Sasaki
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
| | - Ken Ohmori
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
| | - Keisuke Suzuki
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
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16
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Ando Y, Hanaki A, Sasaki R, Ohmori K, Suzuki K. Stereospecificity in Intramolecular Photoredox Reactions of Naphthoquinones: Enantioselective Total Synthesis of (−)-Spiroxin C. Angew Chem Int Ed Engl 2017; 56:11460-11465. [DOI: 10.1002/anie.201705562] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Yoshio Ando
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
| | - Atsuko Hanaki
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
| | - Ryota Sasaki
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
| | - Ken Ohmori
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
| | - Keisuke Suzuki
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1 O-okayama, Meguro Tokyo 152-8551 Japan
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17
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Gomes NGM, Lefranc F, Kijjoa A, Kiss R. Can Some Marine-Derived Fungal Metabolites Become Actual Anticancer Agents? Mar Drugs 2015; 13:3950-91. [PMID: 26090846 PMCID: PMC4483665 DOI: 10.3390/md13063950] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 06/04/2015] [Accepted: 06/09/2015] [Indexed: 01/03/2023] Open
Abstract
Marine fungi are known to produce structurally unique secondary metabolites, and more than 1000 marine fungal-derived metabolites have already been reported. Despite the absence of marine fungal-derived metabolites in the current clinical pipeline, dozens of them have been classified as potential chemotherapy candidates because of their anticancer activity. Over the last decade, several comprehensive reviews have covered the potential anticancer activity of marine fungal-derived metabolites. However, these reviews consider the term "cytotoxicity" to be synonymous with "anticancer agent", which is not actually true. Indeed, a cytotoxic compound is by definition a poisonous compound. To become a potential anticancer agent, a cytotoxic compound must at least display (i) selectivity between normal and cancer cells (ii) activity against multidrug-resistant (MDR) cancer cells; and (iii) a preferentially non-apoptotic cell death mechanism, as it is now well known that a high proportion of cancer cells that resist chemotherapy are in fact apoptosis-resistant cancer cells against which pro-apoptotic drugs have more than limited efficacy. The present review thus focuses on the cytotoxic marine fungal-derived metabolites whose ability to kill cancer cells has been reported in the literature. Particular attention is paid to the compounds that kill cancer cells through non-apoptotic cell death mechanisms.
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Affiliation(s)
- Nelson G M Gomes
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal.
| | - Florence Lefranc
- Service de Neurochirurgie, Hôpital Erasme, Université Libre de Bruxelles, 808 Route de Lennik, 1070 Brussels, Belgium.
| | - Anake Kijjoa
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal.
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles, Campus de la Plaine, CP205/1, Boulevard du Triomphe, 1050 Brussels, Belgium.
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18
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Synthesis and evaluation of (1S)-1,2-dihydro-1-naphthalenol derivatives against PANC-1 cells. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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19
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Lauer MG, Thompson MK, Shaughnessy KH. Controlling olefin isomerization in the heck reaction with neopentyl phosphine ligands. J Org Chem 2014; 79:10837-48. [PMID: 25333873 DOI: 10.1021/jo501840u] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The use of neopentyl phosphine ligands was examined in the coupling of aryl bromides with alkenes. Di-tert-butylneopentylphosphine (DTBNpP) was found to promote Heck couplings with aryl bromides at ambient temperature. In the Heck coupling of cyclic alkenes, the degree of alkene isomerization was found to be controlled by the choice of ligand with DTBNpP promoting isomerization to a much greater extent than trineopentylphosphine (TNpP). Under optimal conditions, DTBNpP provides high selectivity for 2-aryl-2,3-dihydrofuran in the arylation of 2,3-dihydrofuran, whereas TNpP provided high selectivity for the isomeric 2-aryl-2,5-dihydrofuran. A similar complementary product selectivity is seen in the Heck coupling of cyclopentene. Heck coupling of 2-bromophenols or 2-bromoanilides with 2,3-dihydrofurans affords 2,5-epoxybenzoxepin and 2,5-epoxybenzazepins, respectively.
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Affiliation(s)
- Matthew G Lauer
- Department of Chemistry, The University of Alabama , P.O. Box 870336, Tuscaloosa, Alabama 35487-0336, United States
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Raju R, Gromyko O, Fedorenko V, Luzhetskyy A, Müller R. Oleaceran: A Novel Spiro[isobenzofuran-1,2′-naptho[1,8-bc]furan] Isolated from a Terrestrial Streptomyces sp. Org Lett 2013; 15:3487-9. [DOI: 10.1021/ol401490u] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ritesh Raju
- Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany, and Department of Genetics and Biotechnology, Ivan Franko National University of L’viv, Grushevskogo st. 4, L’viv 79005, Ukraine
| | - Oleksandr Gromyko
- Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany, and Department of Genetics and Biotechnology, Ivan Franko National University of L’viv, Grushevskogo st. 4, L’viv 79005, Ukraine
| | - Viktor Fedorenko
- Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany, and Department of Genetics and Biotechnology, Ivan Franko National University of L’viv, Grushevskogo st. 4, L’viv 79005, Ukraine
| | - Andriy Luzhetskyy
- Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany, and Department of Genetics and Biotechnology, Ivan Franko National University of L’viv, Grushevskogo st. 4, L’viv 79005, Ukraine
| | - Rolf Müller
- Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany, and Department of Genetics and Biotechnology, Ivan Franko National University of L’viv, Grushevskogo st. 4, L’viv 79005, Ukraine
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21
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Use of in situ solid-phase adsorption in microbial natural product fermentation development. J Ind Microbiol Biotechnol 2013; 40:411-25. [PMID: 23526181 DOI: 10.1007/s10295-013-1247-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Accepted: 02/18/2013] [Indexed: 10/27/2022]
Abstract
It has been half a century since investigators first began experimenting with adding ion exchange resins during the fermentation of microbial natural products. With the development of nonionic polymeric adsorbents in the 1970s, the application of in situ product adsorption in bioprocessing has grown slowly, but steadily. To date, in situ product adsorption strategies have been used in biotransformations, plant cell culture, the production of biofuels, and selected bulk chemicals, such as butanol and lactic acid, as well as in more traditional natural product fermentation within the pharmaceutical industry. Apart from the operational gains in efficiency from the integration of fermentation and primary recovery, the addition of adsorbents during fermentation has repeatedly demonstrated the capacity to significantly increase titers by sequestering the product and preventing or mitigating degradation, feedback inhibition and/or cytotoxic effects. Adoption of in situ product adsorption has been particularly valuable in the early stages of natural product-based drug discovery programs, where quickly and cost-effectively generating multigram quantities of a lead compound can be challenging when using a wild-type strain and fermentation conditions that have not been optimized. While much of the literature involving in situ adsorption describes its application early in the drug development process, this does not imply that the potential for scale-up is limited. To date, commercial-scale processes utilizing in situ product adsorption have reached batch sizes of at least 30,000 l. Here we present examples where in situ product adsorption has been used to improve product titers or alter the ratios among biosynthetically related natural products, examine some of the relevant variables to consider, and discuss the mechanisms by which in situ adsorption may impact the biosynthesis of microbial natural products.
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22
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Liu XT, Schwan WR, Volk TJ, Rott M, Liu M, Huang P, Liu Z, Wang Y, Zitomer NC, Sleger C, Hartsel S, Monte A, Zhang L. Antibacterial spirobisnaphthalenes from the North American cup fungus Urnula craterium. JOURNAL OF NATURAL PRODUCTS 2012; 75:1534-1538. [PMID: 22934636 DOI: 10.1021/np300221a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Urnucratins A-C (1-3), which possess an unusual bisnaphthospiroether skeleton with one oxygen bridge and one C-C bridge and represent a new subclass of bisnaphthalenes, were isolated from the North American cup fungus Urnula craterium. Their structures, including absolute configurations, were determined by means of HRMS, NMR, and quantum chemical CD calculations. Urnucratin A (1) was found to be active against methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus faecium, and Streptococcus pyogenes with MIC values of 2, 1, and 0.5 μg/mL, respectively.
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Affiliation(s)
- Xue-Ting Liu
- Chinese Academy of Sciences Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
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23
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Podlesny EE, Carroll PJ, Kozlowski MC. Selective oxidation of 8,8'-hydroxylated binaphthols to bis-spironaphthalenones or binaphtho-para- and binaphtho-ortho-quinones. Org Lett 2012; 14:4862-5. [PMID: 22938592 DOI: 10.1021/ol302195e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The selective oxidation of a series of functionalized 8,8'-hydroxylated binaphthols to binaphtho-para- and binaphtho-ortho-quinones has been realized using either a Co-salen catalyst or ortho-iodoxybenzoic acid. A unique spirocyclic bis-spironaphthalenone was also obtained in good yield via a phenyliodonium diacetate promoted oxidative dearomatization.
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Affiliation(s)
- Erin E Podlesny
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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24
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Raghukumar C, Ravindran J. Fungi and their role in corals and coral reef ecosystems. PROGRESS IN MOLECULAR AND SUBCELLULAR BIOLOGY 2012; 53:89-113. [PMID: 22222828 DOI: 10.1007/978-3-642-23342-5_5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Fungi in coral reefs exist as endoliths, endobionts, saprotrophs and as pathogens. Although algal and fungal endoliths in corals were described way back in 1973, their role in microboring, carbonate alteration, discoloration, density banding, symbiotic or parasitic association was postulated almost 25 years later. Fungi, as pathogens in corals, have become a much discussed topic in the last 10 years. It is either due to the availability of better tools for investigations or greater awareness among the research communities. Fungi which are exclusive as endoliths (endemic) in corals or ubiquitous forms seem to play a role in coral reef system. Fungi associated with sponges and their role in production or induction of secondary metabolites in their host is of primary interest to various pharmaceutical industries and funding agencies. Fungal enzymes in degradation of coral mucus, and plant detritus hold great promise in biotechnological applications. Unravelling fungal diversity in corals and associated reef organisms using culture and culture-independent approaches is a subject gaining attention from research community world over.
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Affiliation(s)
- Chandralata Raghukumar
- National Institute of Oceanography, (Council for Scientific and Industrial Research), Dona Paula, 403 004, Goa, India,
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25
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Kwan A, Stein J, Carrico-Moniz D. A catalytic asymmetric entry to enantioenriched tertiary naphthoquinols via a facile tandem oxidation/ring-opening sequence. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.04.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Zhao J, Li Y, Shan T, Mou Y, Zhou L. Enhancement of diepoxin ζ production with in situ resin adsorption in mycelial liquid culture of the endophytic fungus Berkleasmium sp. Dzf12 from Dioscorea zingiberensis. World J Microbiol Biotechnol 2011. [DOI: 10.1007/s11274-011-0750-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Cai YS, Guo YW, Krohn K. Structure, bioactivities, biosynthetic relationships and chemical synthesis of the spirodioxynaphthalenes. Nat Prod Rep 2010; 27:1840-70. [PMID: 21038061 DOI: 10.1039/c0np00031k] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- You-Sheng Cai
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zu Chong Zhi Rd. 555, Shanghai, 201203, People's Republic of China
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28
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Singh MP, Leighton MM, Barbieri LR, Roll DM, Urbance SE, Hoshan L, McDonald LA. Fermentative production of self-toxic fungal secondary metabolites. J Ind Microbiol Biotechnol 2009; 37:335-40. [PMID: 20033470 DOI: 10.1007/s10295-009-0678-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Accepted: 12/03/2009] [Indexed: 10/20/2022]
Abstract
Fungi are well known for their vast diversity of secondary metabolites that include many life-saving drugs and highly toxic mycotoxins. In general, fungal cultures producing such metabolites are immune to their toxic effects. However, some are known to produce self-toxic compounds that can pose production optimization challenges if the metabolites are needed in large amounts for chemical modification. One such culture, LV-2841, was identified as the lead for one of our exploratory projects. This culture was found to be a slow grower that produced trace amounts of a known metabolite, cercosporamide, under the standard flask fermentation conditions, and extensive medium optimization studies failed to yield higher titers. Poor growth of the culture in liquid media was attributed to the self-toxicity of cercosporamide to the producing organism, and the minimum inhibitory concentration (MIC) of cercosporamide was estimated to be in the range of 8-16 microg/ml. Fermentations carried out in media containing Diaion HP20 resin afforded significantly higher titers of the desired compound. While several examples of resin-based fermentations of soil streptomyces have been published, this approach has rarely been used for fungal fermentations. Over a 100-fold increase in the production titer of cercosporamide, a self-toxic secondary metabolite, was achieved by supplementing the production medium with a commercially available neutral adsorbent resin.
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Affiliation(s)
- Maya P Singh
- Biosynthetic Chemistry and Infectious Diseases, Chemical Sciences Division, Pfizer (Legacy Wyeth Research), 401 N. Middletown Road, Pearl River, NY 10965, USA.
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Chen X, Shi Q, Lin G, Guo S, Yang J. Spirobisnaphthalene analogues from the endophytic fungus Preussia sp. JOURNAL OF NATURAL PRODUCTS 2009; 72:1712-1715. [PMID: 19708679 DOI: 10.1021/np900302w] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A study on the chemical constituents of the endophytic fungus Preussia sp. led to the isolation of three new spirobisnaphthalene analogues, spiropreussione A (1), spiropreussione B (2), and spiropreussomerin A (3). Compound 2 is a spirobisnaphthalene analogue with a cyclopenteno-naphthoindene fragment bridged to a 1,8-dioxygenated naphthalene fragment, and compound 1 is the second compound in this series with a spiro-nonadiene skeleton. The structures of 1-3 were elucidated using spectroscopic data interpretation. Compound 1 showed cytotoxicity toward A2780 and BEL-7404 cells with IC(50) values of 2.4 and 3.0 microM, respectively, and weak activity against Staphylococcus aureus (CMCC B26003) with a MIC value of 25 microM.
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Affiliation(s)
- Xiaomei Chen
- Biotechnology Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People's Republic of China
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30
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Dai J, Krohn K, Draeger S, Schulz B. New Naphthalene-Chroman Coupling Products from the Endophytic Fungus,Nodulisporium sp.fromErica arborea. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801106] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Abdel-Lateff A, Elkhayat ES, Fouad MA, Okino T. Aureobasidin, New Antifouling Metabolite from Marine-Derived Fungus Aureobasidium sp. Nat Prod Commun 2009. [DOI: 10.1177/1934578x0900400315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Two antifouling compounds, aureobasidin (1), a new ester with an unusual 4,6-dihydroxydecanoic acid residue, and (3 R,5 S)-3,5-dihydroxydecanoic acid (2), were isolated from the marine-derived fungus Aureobasidium sp., in addition to (5 R,3 Z)-5-hydroxydec-3-enoic acid (3) and ( R)-3-hydroxydecanoic acid (4). The structures were unambiguously established by IR, 1D and 2D NMR spectroscopic and mass spectral data. Compounds 1-3 were found to be active against Bacillus subtilis, Escherichia coli and Staphyllococcus aureus. Compound 3 showed fungistatic activity against Candida albicans.
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Affiliation(s)
- Ahmed Abdel-Lateff
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Ehab S. Elkhayat
- Department of Pharmacognosy, Faculty of Pharmacy, Azhar University, Assuit 71524, Egypt
| | - Mostafa A. Fouad
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt
| | - Tatsufumi Okino
- Faculty of earth and environmental science, Hokkaido University, Sapporo, 060-0810, Japan
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Murphy AC, Devenish SRA, Muscroft-Taylor AC, Blunt JW, Munro MHG. Synthetic and biological studies on the spiro-mamakone system. Org Biomol Chem 2008; 6:3854-62. [PMID: 18843418 DOI: 10.1039/b812263f] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An exploration of the chemistry of the spiro-mamakone system, exemplified by the cytotoxic, fungal metabolite spiro-mamakone A, is presented. The first reported synthesis of the spiro-mamakone carbon skeleton was achieved, as well as the synthesis of a variety of closely related analogues of the natural product. Biological testing of the synthetic analogues generated a structure-activity profile for the natural product, establishing the importance of the enedione moiety to biological activity.
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Affiliation(s)
- Annabel C Murphy
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand
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van der Sar SA, Lang G, Mitova MI, Blunt JW, Cole ALJ, Cummings N, Ellis G, Munro MHG. Biosynthesis of spiro-Mamakone A, a Structurally Unprecedented Fungal Metabolite. J Org Chem 2008; 73:8635-8. [DOI: 10.1021/jo801564c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sonia A. van der Sar
- Department of Chemistry and School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - Gerhard Lang
- Department of Chemistry and School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - Maya I. Mitova
- Department of Chemistry and School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - John W. Blunt
- Department of Chemistry and School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - Anthony L. J. Cole
- Department of Chemistry and School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - Nicholas Cummings
- Department of Chemistry and School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - Gill Ellis
- Department of Chemistry and School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - Murray H. G. Munro
- Department of Chemistry and School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
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Wagenaar MM. Pre-fractionated microbial samples--the second generation natural products library at Wyeth. Molecules 2008; 13:1406-26. [PMID: 18596666 PMCID: PMC6245344 DOI: 10.3390/molecules13061406] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2008] [Accepted: 06/16/2008] [Indexed: 12/16/2022] Open
Abstract
From the beginning of the antibiotic era in the 1940s to the present, Wyeth has sustained an active research program in the area of natural products discovery. This program has continually evolved through the years in order to best align with the "current" drug discovery paradigm in the pharmaceutical industry. The introduction of high-throughput screening and the miniaturization of assays have created a need to optimize natural product samples to better suit these new technologies. Furthermore, natural product programs are faced with an ever shortening time period from hit detection to lead characterization. To address these issues, Wyeth has created a pre-fractionated natural products library using reversed-phase HPLC to complement their existing library of crude extracts. The details of the pre-fractionated library and a cost-benefit analysis will be presented in this review.
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Affiliation(s)
- Melissa M Wagenaar
- Natural Products Discovery Research, Chemical and Screening Sciences, Wyeth Research, Pearl River, New York 10965, USA.
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35
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Macías-Rubalcava ML, Hernández-Bautista BE, Jiménez-Estrada M, González MC, Glenn AE, Hanlin RT, Hernández-Ortega S, Saucedo-García A, Muria-González JM, Anaya AL. Naphthoquinone spiroketal with allelochemical activity from the newly discovered endophytic fungus Edenia gomezpompae. PHYTOCHEMISTRY 2008; 69:1185-1196. [PMID: 18234248 DOI: 10.1016/j.phytochem.2007.12.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2007] [Revised: 10/29/2007] [Accepted: 12/03/2007] [Indexed: 05/25/2023]
Abstract
Chemical investigation of the mycelium of Edenia gomezpompae, a newly discovered endophytic fungus isolated from the leaves of Callicarpa acuminata (Verbenaceae) collected from the ecological reserve El Eden, Quintana Roo, Mexico, resulted in the isolation of four naphthoquinone spiroketals, including three new compounds and palmarumycin CP2 (4). We elucidated the structures of the metabolites by extensive NMR spectroscopy studies, including DEPT, COSY, NOESY, HSQC, HMBC, and chiroptical methods. The trivial names proposed for these compounds are preussomerin EG1 (1), preussomerin EG2 (2) and preussomerin EG3 (3). In addition, the X-ray data for 4 were obtained. The bioactivity of the mycelial organic extracts and the pure compounds was tested against three endophytic fungi (Colletotrichum sp., Phomopsis sp., and Guignardia manguifera) isolated from the same plant species (C. acuminata, Verbenaceae) and against four economically important phytopathogenic microorganisms (two fungoid oomycetes, Phythophtora capsici and Phythophtora parasitica, and the fungi Fusarium oxysporum and Alternaria solani). Spiroketals 1-3 displayed significant growth inhibition against all the phytopathogens. IC50 values for the four phytopathogens were from 20 to 170 microg/ml. Palmarumycin CP2 (4) was not bioactive against any of the fungi tested. Compound 1 showed the strongest bioactivity. The acetylated derivatives of preussomerin EG1 (1), 1a and 1b, were obtained and their biological activity was tested on endophytes and phytopathogens. Preussomerin EG1 1, 1a and 1b exhibited significant bioactivity against all microorganisms tested with the exception of Alternaria solani. This is the first report of allelochemicals with antifungal activity from the newly discovered endophytic fungus E. gomezpompae.
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Affiliation(s)
- Martha L Macías-Rubalcava
- Instituto de Ecología, Departamento de Ecología Funcional, Universidad Nacional Autónoma de México, Apartado Postal 70-275, Ciudad Universitaria, 04510 Mexico DF, Mexico
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Miyashita K, Imanishi T. Syntheses of Natural Products Having an Epoxyquinone Structure. Chem Rev 2005; 105:4515-36. [PMID: 16351052 DOI: 10.1021/cr040613k] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuyuki Miyashita
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
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Abstract
This review covers the literature published in 2003 for marine natural products, with 619 citations (413 for the period January to December 2003) referring to compounds isolated from marine microorganisms and phytoplankton, green algae, brown algae, red algae, sponges, coelenterates, bryozoans, molluscs, tunicates and echinoderms. The emphasis is on new compounds (656 for 2003), together with their relevant biological activities, source organisms and country or origin. Biosynthetic studies or syntheses that lead to the revision of structures or stereochemistries have been included (78), including any first total syntheses of a marine natural product.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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Chemistry of the diboron compounds. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0169-3158(06)80002-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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40
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Quesada E, Stockley M, Ragot JP, Prime ME, Whitwood AC, Taylor RJK. A versatile, non-biomimetic route to the preussomerins: syntheses of (+/-)-preussomerins F, K and L. Org Biomol Chem 2004; 2:2483-95. [PMID: 15326529 DOI: 10.1039/b407895k] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first total syntheses of the title fungal metabolites preussomerins F, K and L are described and their structures confirmed thereby. The syntheses were achieved following a versatile, unified, non-biomimetic approach, which is easily extendable to prepare other known and novel members of this family. Key steps include the functionalisation of a 2-arylacetal anion, tandem one-pot Friedel-Crafts cyclisation-deprotection, regioselective substrate-directable hydrogenation and reductive-opening of epoxides.
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Affiliation(s)
- Ernesto Quesada
- Department of Chemistry, University of York, Heslington, York, UKYO10 5DD
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41
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Quesada E, Stockley M, Taylor RJ. The first total syntheses of (±)-Preussomerins K and L using 2-arylacetal anion technology. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.143] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Biland-Thommen AS, Raju GS, Blagg J, White AJ, Barrett AG. Double benzyne–furan cycloaddition and the assembly of 1,1′-binaphthyl and 1,1′-dinaphthyl ether systems. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Abstract
[reaction: see text] The first total synthesis of a marine-derived potent antitumor antibiotic, (+/-)-spiroxin C, was achieved via a TBAF-activated Suzuki-Miyaura cross-coupling reaction as a key step, which was also shown to be useful for the synthesis of sterically hindered binaphthyl derivatives.
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Affiliation(s)
- Kazuyuki Miyashita
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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44
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Wipf P, Lynch SM. Synthesis of highly oxygenated dinaphthyl ethers via SNAr reactions promoted by Barton's base. Org Lett 2003; 5:1155-8. [PMID: 12659597 DOI: 10.1021/ol034286z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Electron-rich dinaphthyl ethers were synthesized by S(N)Ar reactions between naphthols and activated fluoronaphthalenes. 2-tert-Butyl-1,1,3,3-tetramethylguanidine (Barton's base) was found to be an excellent, mild alternative to traditional inorganic bases for promoting the coupling reaction.
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Affiliation(s)
- Peter Wipf
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA. pwipf+@pitt.edu
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45
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Krohn K. Natural products derived from naphthalenoid precursors by oxidative dimerization. FORTSCHRITTE DER CHEMIE ORGANISCHER NATURSTOFFE = PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS. PROGRES DANS LA CHIMIE DES SUBSTANCES ORGANIQUES NATURELLES 2003; 85:1-49. [PMID: 12602036 DOI: 10.1007/978-3-7091-6051-0_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Affiliation(s)
- K Krohn
- Fachbereich Chemie und Chemietechnik, Universität Paderborn, Germany
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46
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Inoue M, Nabatame K, Hirama M. A Novel Route to 1,8-Dihydroxy-naphthalene-derived Natural Products. Synthesis of (±)-CJ-12,372. HETEROCYCLES 2003. [DOI: 10.3987/com-02-s32] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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47
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Barrett AGM, Blaney F, Campbell AD, Hamprecht D, Meyer T, White AJP, Witty D, Williams DJ. Unified route to the palmarumycin and preussomerin natural products. Enantioselective synthesis of (-)-preussomerin G. J Org Chem 2002; 67:2735-50. [PMID: 11975523 DOI: 10.1021/jo0110247] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The total syntheses of eight members of the palmarumycin family have been achieved, with identification of the absolute stereochemistry for three of these natural products. In addition, the ras-farnesyl transferase inhibitor (-)-preussomerin G has been synthesized, achieving the first enantioselective route for accessing this family of natural products. Highlights of the synthetic work include an asymmetric epoxidation of a cyclic enone in excellent yield and enantiomeric excess and a potentially biomimetic oxidative spirocyclization for the introduction of the bis-spiroketal array unique to the preussomerin natural products.
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Affiliation(s)
- Anthony G M Barrett
- Department of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London SW7 2AY, UK.
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48
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Wang T, Shirota O, Nakanishi K, Berova N, McDonald LA, Barbieri LR, Carter GT. Absolute stereochemistry of the spiroxins. CAN J CHEM 2001. [DOI: 10.1139/v01-153] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The absolute configuration of spiroxin A has been determined by exciton-coupled circular dichroism (CD). Namely, the difference CD between spiroxin A bis-methoxycinnamate, as well as that between spiroxin A bis-retinoate, both exhibit negative exciton couplings between the acylated phenolic hydroxyl group chromophores. This establishes the absolute configuration as 2S,3R,4S,2'S,3'R,4'S.Key words: circular dichroism, exciton coupling, spiroxins, antitumor, antifungal.
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49
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Wipf P, Jung JK, Rodrı́guez S, Lazo JS. Synthesis and biological evaluation of deoxypreussomerin A and palmarumycin CP1 and related naphthoquinone spiroketals. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(00)00936-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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50
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Abstract
The highly oxygenated antifungal anticancer natural product (+/-)-diepoxin sigma was prepared in 10 steps and in 15% overall yield from O-methylnaphthazarin. Highlights of the synthetic work include an Ullmann coupling and a possibly biomimetic oxidative spirocyclization for the introduction of the naphthalene ketal as well as the use of a retro-Diels-Alder reaction to unmask the reactive enone moiety in the naphthoquinone bisepoxide ring system. A novel highly bulky chiral binaphthol ligand was developed for a boron-mediated Diels-Alder reaction that constitutes a formal asymmetric total synthesis of (+)-diepoxin sigma.
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Affiliation(s)
- P Wipf
- Department of Chemistry, University of Pittsburgh, Pennsylvania 15260, USA. pwipf+@pitt.edu
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