1
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Kumar P, Nalli Y, Singh S, Wakchaure PD, Gor R, Ghadge VA, Kim E, Ramalingam S, Azger Dusthackeer VN, Yoon YJ, Ganguly B, Shinde PB. Dactylides A-C, three new bioactive 22-membered macrolides produced by Dactylosporangium aurantiacum. J Antibiot (Tokyo) 2023; 76:503-510. [PMID: 37208457 DOI: 10.1038/s41429-023-00632-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/15/2023] [Accepted: 05/02/2023] [Indexed: 05/21/2023]
Abstract
Three new 22-membered polyol macrolides, dactylides A-C (1-3), were isolated from Dactylosporangium aurantiacum ATCC 23491 employing repeated chromatographic separations, and their structures were established based on detailed analysis of NMR and MS data. The relative configurations at the stereocenters were established via vicinal 1H-1H coupling constants, NOE correlations, and by application of Kishi's universal NMR database. In order to get insights into the biosynthetic pathway of 1-3, the genome sequence of the producer strain D. aurantiacum was obtained and the putative biosynthetic gene cluster encoding their biosynthesis was identified through bioinformatic analysis using antiSMASH. Compounds 1-3 showed significant in-vitro antimycobacterial and cytotoxic activity.
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Affiliation(s)
- Pankaj Kumar
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Yedukondalu Nalli
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India
| | - Sanju Singh
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Padmaja D Wakchaure
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Computation and Simulation Unit, Analytical and Environmental Science Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, 364002, India
| | - Ravi Gor
- Department of Genetic Engineering, School of Bio-Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | - Vishal A Ghadge
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Eunji Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Satish Ramalingam
- Department of Genetic Engineering, School of Bio-Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | - V N Azger Dusthackeer
- Department of Bacteriology, National Institute for Research in Tuberculosis, ICMR, Sathyamoorty road, Chetpet, Chennai, 600031, Tamil Nadu, India
| | - Yeo Joon Yoon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Bishwajit Ganguly
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Computation and Simulation Unit, Analytical and Environmental Science Division and Centralized Instrument Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, 364002, India
| | - Pramod B Shinde
- Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific and Industrial Research (CSIR), Bhavnagar, Gujarat, 364002, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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2
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Chen R, Minns SA, Kalaitzis JA, Butler MS, Rosin M, Vuong D, Lean SS, Chooi YH, Lacey E, Piggott AM. Turonicin A, an Antifungal Linear Polyene Polyketide from an Australian Streptomyces sp. JOURNAL OF NATURAL PRODUCTS 2023; 86:2054-2058. [PMID: 37526586 DOI: 10.1021/acs.jnatprod.3c00144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Turonicin A (1) was isolated from Streptomyces sp. MST-123921, which was recovered from soil collected on the banks of the Turon River in New South Wales, Australia. Turonicin A (1) is an amphoteric linear polyene polyketide featuring independent pentaene and tetraenone chromophores and is structurally related to linearmycins A-C (2-4). The structure of 1 was determined by detailed spectroscopic analysis and comparison to literature data. Bioinformatic analysis of the linearmycin biosynthetic gene cluster also allowed the previously unresolved absolute stereostructures of 2-4 to be elucidated. Turonicin A (1) exhibited very potent activity against the fungi Candida albicans (MIC 0.0031 μg/mL, 2.7 nM) and Saccharomyces cerevisiae (MIC 0.0008 μg/mL, 0.7 nM), moderate activity against the bacteria Bacillus subtilis (MIC 0.097 μg/mL, 85 nM) and Staphylococcus aureus (MIC 0.39 μg/mL, 340 nM), and no cytotoxicity against human fibroblasts, making it an attractive candidate for further development as a potential next-generation antibiotic scaffold.
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Affiliation(s)
- Rachel Chen
- Microbial Screening Technologies Pty. Ltd., Smithfield, NSW 2164, Australia
| | - Scott A Minns
- Microbial Screening Technologies Pty. Ltd., Smithfield, NSW 2164, Australia
| | - John A Kalaitzis
- School of Natural Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | | | - Maira Rosin
- Department of Molecular and Applied Microbiology, Jena Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Jena D-07745, Germany
| | - Daniel Vuong
- School of Natural Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Soo Sum Lean
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia
| | - Yit-Heng Chooi
- School of Molecular Sciences, The University of Western Australia, Perth, WA 6009, Australia
| | - Ernest Lacey
- Microbial Screening Technologies Pty. Ltd., Smithfield, NSW 2164, Australia
- School of Natural Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Andrew M Piggott
- School of Natural Sciences, Macquarie University, Sydney, NSW 2109, Australia
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3
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Friedrich RM, Friestad GK. Inspirations from tetrafibricin and related polyketides: new methods and strategies for 1,5-polyol synthesis. Nat Prod Rep 2020; 37:1229-1261. [PMID: 32412021 DOI: 10.1039/c9np00070d] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Covering: up to 2019 Selective synthesis with control of remote stereogenic centers has long been a challenge in organic chemistry. In recent years the interest in this topic has been energized by isolation and synthetic studies of tetrafibricin and other natural products containing 1,5-polyols, such as amphidinol 3, marinomycins, and caylobolide. Here we discuss recent developments in 1,5-polyol synthesis, including an overview of selected bioactive natural products in this class and examples of new synthetic methodologies and strategies dedicated to remote stereocontrol in these structures. To illustrate in greater depth, we review several instructive examples of how these innovations have been applied in synthetic studies on tetrafibricin.
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Affiliation(s)
- Ryan M Friedrich
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA.
| | - Gregory K Friestad
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA.
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4
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Friedrich RM, Bell JQ, Garcia A, Shen Z, Friestad GK. Unified Strategy for 1,5,9- and 1,5,7-Triols via Configuration-Encoded 1,5-Polyol Synthesis: Preparation and Coupling of C15-C25 and C26-C40 Fragments of Tetrafibricin. J Org Chem 2018; 83:13650-13669. [PMID: 30372076 DOI: 10.1021/acs.joc.8b02034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Diverse classes of natural products contain chiral 1,5,9- and 1,5,7-triol stereotriads, including the novel fibrinogen receptor antagonist tetrafibricin. Biological activities associated with compounds containing these motifs warrant targeted synthetic strategies to 1,5-polyol families from cheap and easily accessible reagents while avoiding the need to determine configurations at each alcohol stereocenter. In the accompanying paper, we present a solution to these problems via an iterative configuration-encoded strategy that exploits Julia-Kocienski couplings of enantiopure α-silyloxy-γ-sulfononitrile building blocks. The stereocontrol is unambiguous, and the building blocks are available in multigram quantities via asymmetric catalysis. This approach efficiently accessed a C26-C40 subunit of tetrafibricin that contains a syn, syn-1,5,9-triol and all of the stereochemistry and functionality needed to advance toward tetrafibricin. A modification afforded the anti, syn-1,5,7-triol within the C15-C25 fragment of tetrafibricin by merging 1,5-polyol synthesis with diastereoselective intramolecular conjugate addition. The union of the C15-C25 and C26-C40 fragments was achieved via a BF3·OEt2-mediated Mukaiyama aldol construction with high 1,3- anti stereoinduction, revealing some unexpected insights on the impact of silyl protecting groups on 1,3- anti diastereocontrol by a β-siloxyaldehyde aldol acceptor. Directed 1,3- anti reduction completed the stereostructure of the C15-C40 portion of tetrafibricin, with configurations established by a combination of NMR experiments.
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Affiliation(s)
- Ryan M Friedrich
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
| | - Jay Q Bell
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
| | - Alfredo Garcia
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
| | - Zican Shen
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
| | - Gregory K Friestad
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
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5
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Friedrich RM, Sreenilayam G, Hackbarth J, Friestad GK. Unified Strategy for 1,5,9- and 1,5,7-Triols via Configuration-Encoded 1,5-Polyol Synthesis: Enantioselective Preparation of γ-Sulfonyl-α-silyloxyaldehydes and Iterative Julia-Kocienski Coupling. J Org Chem 2018; 83:13636-13649. [PMID: 30365891 DOI: 10.1021/acs.joc.8b02033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diverse classes of natural products contain chiral 1,5-polyols, within which may be stereochemical triads of 1,5,9- and 1,5,7-triols. Biological activities associated with compounds containing these motifs warrant targeted synthetic strategies to access all stereoisomers of a 1,5-polyol family from cheap and easily accessible reagents while avoiding the need to determine configurations at each alcohol stereocenter. Here, we address these problems via design and implementation of an iterative configuration-encoded strategy to access 1,5-polyols with unambiguous stereocontrol; the coupling event exploits Julia-Kocienski reactions of enantiopure α-silyloxy-γ-sulfononitriles. These building blocks, bearing sulfone at one terminus and α-silyloxyaldehyde (in latent form) at the other, were prepared via asymmetric catalysis. An efficient scalable route to these building blocks was developed, leading to enantiopure samples in multigram quantities. Preliminary studies of acetals as the latent aldehyde functionality in the α-silyloxyaldehyde showed that Julia-Kocienski coupling of these building blocks was effective, but iterative application was thwarted during acetal hydrolysis, leading to use of nitrile to perform the latent aldehyde function. A variety of 1,5-polyols, including a 1,5,9,13-tetraol and a differentially protected 1,5,9-triol, were prepared, validating the approach. The accompanying paper describes the application of this configuration-encoded 1,5-polyol synthesis to 1,5,9- and 1,5,7-triols found in tetrafibricin.
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Affiliation(s)
- Ryan M Friedrich
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
| | | | - Jacob Hackbarth
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
| | - Gregory K Friestad
- Department of Chemistry , University of Iowa , Iowa City , Iowa 52242 , United States
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6
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Hong H, Samborskyy M, Usachova K, Schnatz K, Leadlay PF. Sulfation and amidinohydrolysis in the biosynthesis of giant linear polyenes. Beilstein J Org Chem 2017; 13:2408-2415. [PMID: 29234468 PMCID: PMC5704753 DOI: 10.3762/bjoc.13.238] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 10/13/2017] [Indexed: 12/24/2022] Open
Abstract
Clethramycin from Streptomyces malaysiensis DSM4137, and mediomycins (produced together with clethramycin from Streptomyces mediocidicus), are near-identical giant linear polyenes apparently constructed from, respectively, a 4-guanidinobutanoate or 4-aminobutanoate starter unit and 27 polyketide extender units, and bearing a specific O-sulfonate modification at the C-29 hydroxy group. We show here that mediomycins are actually biosynthesised not by use of a different starter unit but by direct late-stage deamidination of (desulfo)clethramycin. A gene (slf) encoding a candidate sulfotransferase has been located in both gene clusters. Deletion of this gene in DSM4137 led to accumulation of desulfoclethramycin only, instead of a mixture of desulfoclethramycin and clethramycin. The mediomycin gene cluster does not encode an amidinohydrolase, but when three candidate amidinohydrolase genes from elsewhere in the S. mediocidicus genome were individually expressed in Escherichia coli and assayed, only one of them (medi4948), located 670 kbp away from the mediomycin gene cluster on the chromosome, catalysed the removal of the amidino group from desulfoclethramycin. Subsequent cloning of medi4948 into DSM4137 caused mediomycins A and B to accumulate at the expense of clethramycin and desulfoclethramycin, respectively, a rare case where an essential biosynthetic gene is not co-located with other pathway genes. Clearly, both desulfoclethramycin and clethramycin are substrates for this amidinohydrolase. Also, purified recombinant sulfotransferase from DSM4137, in the presence of 3'-phosphoadenosine-5'-phosphosulfate as donor, efficiently converted mediomycin B to mediomycin A in vitro. Thus, in the final steps of mediomycin A biosynthesis deamidination and sulfotransfer can take place in either order.
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Affiliation(s)
- Hui Hong
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, UK
| | | | | | - Katharina Schnatz
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, UK
| | - Peter F Leadlay
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, UK
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7
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Ai Y, Ye N, Wang Q, Yahata K, Kishi Y. Zirconium/Nickel-Mediated One-Pot Ketone Synthesis. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705520] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yanran Ai
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Ning Ye
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Qiaoyi Wang
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Kenzo Yahata
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Yoshito Kishi
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
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8
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Ai Y, Ye N, Wang Q, Yahata K, Kishi Y. Zirconium/Nickel-Mediated One-Pot Ketone Synthesis. Angew Chem Int Ed Engl 2017; 56:10791-10795. [DOI: 10.1002/anie.201705520] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Yanran Ai
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Ning Ye
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Qiaoyi Wang
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Kenzo Yahata
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
| | - Yoshito Kishi
- Department of Chemistry and Chemical Biology; Harvard University; Cambridge MA 02138 USA
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9
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Hu C, Hong G, Qian X, Kim KR, Zhu X, Wang L. AlCl 3 catalyzed coupling of N-benzylic sulfonamides with 2-substituted cyanoacetates through carbon-nitrogen bond cleavage. Org Biomol Chem 2017; 15:4984-4991. [PMID: 28561129 DOI: 10.1039/c7ob01025g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A new cross-coupling reaction of N-benzylic sulfonamides with 2-substituted cyanoacetates for the synthesis of 2-substituted benzylbenzene was reported. In the presence of AlCl3, a broad range of N-benzylic sulfonamides reacted smoothly with 2-substituted cyanoacetates to afford structurally diverse benzylbenzenes in moderate to excellent yields. The conversion could be enlarged to gram-scale efficiently. The practicability of this approach was further manifested in the synthesis of a related bioactive agent with high anti-inflammatory activity.
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Affiliation(s)
- Chen Hu
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals and School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China.
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10
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Friedrich RM, Friestad GK. Access to ananti,syn-1,5,7-Triol by Configuration-Encoded 1,5-Polyol Synthesis: The C15-C25 Fragment of Tetrafibricin. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700373] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ryan M. Friedrich
- Department of Chemistry; University of Iowa; 52242 Iowa City Iowa USA
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11
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Zhang L, Hashimoto T, Qin B, Hashimoto J, Kozone I, Kawahara T, Okada M, Awakawa T, Ito T, Asakawa Y, Ueki M, Takahashi S, Osada H, Wakimoto T, Ikeda H, Shin-ya K, Abe I. Characterization of Giant Modular PKSs Provides Insight into Genetic Mechanism for Structural Diversification of Aminopolyol Polyketides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611371] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lihan Zhang
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Takuya Hashimoto
- National Institute of Advanced Industrial Science and Technology (AIST); 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Bin Qin
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Junko Hashimoto
- Japan Biological Informatics Consortium; 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Ikuko Kozone
- Japan Biological Informatics Consortium; 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Teppei Kawahara
- Japan Biological Informatics Consortium; 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Masahiro Okada
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Takayoshi Awakawa
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Takuya Ito
- Faculty of Pharmaceutical Sciences; Tokushima Bunri University; 180 Nishihama, Yamashirocho Tokushima Japan
| | - Yoshinori Asakawa
- Faculty of Pharmaceutical Sciences; Tokushima Bunri University; 180 Nishihama, Yamashirocho Tokushima Japan
| | - Masashi Ueki
- Chemical Biology Research Group; RIKEN Center for Sustainable Resource Science; 2-1 Hirosawa, Wako Saitama Japan
| | - Shunji Takahashi
- Chemical Biology Research Group; RIKEN Center for Sustainable Resource Science; 2-1 Hirosawa, Wako Saitama Japan
| | - Hiroyuki Osada
- Chemical Biology Research Group; RIKEN Center for Sustainable Resource Science; 2-1 Hirosawa, Wako Saitama Japan
| | - Toshiyuki Wakimoto
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Haruo Ikeda
- Laboratory of Microbial Engineering; Kitasato Institute for Life Sciences; Kitasato University; Kanagawa Japan
| | - Kazuo Shin-ya
- National Institute of Advanced Industrial Science and Technology (AIST); 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
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12
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Zhang L, Hashimoto T, Qin B, Hashimoto J, Kozone I, Kawahara T, Okada M, Awakawa T, Ito T, Asakawa Y, Ueki M, Takahashi S, Osada H, Wakimoto T, Ikeda H, Shin-ya K, Abe I. Characterization of Giant Modular PKSs Provides Insight into Genetic Mechanism for Structural Diversification of Aminopolyol Polyketides. Angew Chem Int Ed Engl 2017; 56:1740-1745. [DOI: 10.1002/anie.201611371] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Lihan Zhang
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Takuya Hashimoto
- National Institute of Advanced Industrial Science and Technology (AIST); 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Bin Qin
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Junko Hashimoto
- Japan Biological Informatics Consortium; 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Ikuko Kozone
- Japan Biological Informatics Consortium; 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Teppei Kawahara
- Japan Biological Informatics Consortium; 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Masahiro Okada
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Takayoshi Awakawa
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Takuya Ito
- Faculty of Pharmaceutical Sciences; Tokushima Bunri University; 180 Nishihama, Yamashirocho Tokushima Japan
| | - Yoshinori Asakawa
- Faculty of Pharmaceutical Sciences; Tokushima Bunri University; 180 Nishihama, Yamashirocho Tokushima Japan
| | - Masashi Ueki
- Chemical Biology Research Group; RIKEN Center for Sustainable Resource Science; 2-1 Hirosawa, Wako Saitama Japan
| | - Shunji Takahashi
- Chemical Biology Research Group; RIKEN Center for Sustainable Resource Science; 2-1 Hirosawa, Wako Saitama Japan
| | - Hiroyuki Osada
- Chemical Biology Research Group; RIKEN Center for Sustainable Resource Science; 2-1 Hirosawa, Wako Saitama Japan
| | - Toshiyuki Wakimoto
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
| | - Haruo Ikeda
- Laboratory of Microbial Engineering; Kitasato Institute for Life Sciences; Kitasato University; Kanagawa Japan
| | - Kazuo Shin-ya
- National Institute of Advanced Industrial Science and Technology (AIST); 2-4-7 Aomi, Koto-ku Tokyo Japan
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; 7-3-1 Hongo, Bunkyo-ku Tokyo Japan
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13
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Intra B, Greule A, Bechthold A, Euanorasetr J, Paululat T, Panbangred W. Thailandins A and B, New Polyene Macrolactone Compounds Isolated from Actinokineospora bangkokensis Strain 44EHW(T), Possessing Antifungal Activity against Anthracnose Fungi and Pathogenic Yeasts. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:5171-5179. [PMID: 27267862 DOI: 10.1021/acs.jafc.6b01119] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two new polyene macrolactone antibiotics, thailandins A, 1, and B, 2, were isolated from the fermentation broth of rhizosphere soil-associated Actinokineospora bangkokensis strain 44EHW(T). The new compounds from this strain were purified using semipreparative HPLC and Sephadex LH-20 gel filtration while following an antifungal activity guided fractionation. Their structures were elucidated through spectroscopic techniques including UV, HR-ESI-MS, and NMR. These compounds demonstrated broad spectrum antifungal activity against fungi causing anthracnose disease (Colletotrichum gloeosporioides DoA d0762, Colletotrichum gloeosporiodes DoA c1060, and Colletotrichum capsici DoA c1511) as well as pathogenic yeasts (Candida albicans MT 2013/1, Candida parasilopsis DKMU 434, and Cryptococcus neoformans MT 2013/2) with minimum inhibitory concentrations ranging between 16 and 32 μg/mL. This is the first report of polyene antibiotics produced by Actinokineospora species as bioactive compounds against anthracnose fungi and pathogenic yeast strains.
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Affiliation(s)
- Bungonsiri Intra
- Department of Biotechnology, Faculty of Science, Mahidol University , 272 Rama 6 Road, Bangkok 10400, Thailand
- Mahidol University and Osaka Collaborative Research Center on Bioscience and Biotechnology , Bangkok 10400, Thailand
| | - Anja Greule
- Institute for Pharmaceutical Biology and Biotechnology, Albert-Ludwigs University of Freiburg , Stefan-Meier-Strasse 19, 79104 Freiburg, Germany
| | - Andreas Bechthold
- Institute for Pharmaceutical Biology and Biotechnology, Albert-Ludwigs University of Freiburg , Stefan-Meier-Strasse 19, 79104 Freiburg, Germany
| | - Jirayut Euanorasetr
- Department of Biotechnology, Faculty of Science, Mahidol University , 272 Rama 6 Road, Bangkok 10400, Thailand
- Mahidol University and Osaka Collaborative Research Center on Bioscience and Biotechnology , Bangkok 10400, Thailand
| | - Thomas Paululat
- Department of Chemistry-Biology, Organic Chemistry II, University of Siegen , Adolf-Reichwein-Strasse 2, 57068 Siegen, Germany
| | - Watanalai Panbangred
- Department of Biotechnology, Faculty of Science, Mahidol University , 272 Rama 6 Road, Bangkok 10400, Thailand
- Mahidol University and Osaka Collaborative Research Center on Bioscience and Biotechnology , Bangkok 10400, Thailand
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14
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Nong XH, Zhang XY, Xu XY, Wang J, Qi SH. Nahuoic Acids B-E, Polyhydroxy Polyketides from the Marine-Derived Streptomyces sp. SCSGAA 0027. JOURNAL OF NATURAL PRODUCTS 2016; 79:141-148. [PMID: 26684286 DOI: 10.1021/acs.jnatprod.5b00805] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Four new polyol polyketides containing a decalin ring, nahuoic acids B-E (1-4), together with a known analogue, nahuoic acid A (5), possessing an unprecedented carbon skeleton, were isolated from a culture broth of the marine-derived Streptomyces sp. SCSGAA 0027. Their structures were determined by detailed analysis of spectroscopic data and chemical transformations including acetonide formation and Mosher's ester method. Compounds 1-5 showed weak antibiofilm activity against Shewanella onedensis MR-1 biofilm. This is the first series of analogues of the novel selective SETD8 inhibitor nahuoic acid A.
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Affiliation(s)
- Xu-Hua Nong
- Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road, Guangzhou, 510301 Guangdong, People's Republic of China
| | - Xiao-Yong Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road, Guangzhou, 510301 Guangdong, People's Republic of China
| | - Xin-Ya Xu
- Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road, Guangzhou, 510301 Guangdong, People's Republic of China
| | - Jie Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road, Guangzhou, 510301 Guangdong, People's Republic of China
| | - Shu-Hua Qi
- Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road, Guangzhou, 510301 Guangdong, People's Republic of China
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15
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Wan Z, Fang W, Shi L, Wang K, Zhang Y, Zhang Z, Wu Z, Yang Z, Gu Y. Novonestmycins A and B, two new 32-membered bioactive macrolides from Streptomyces phytohabitans HBERC-20821. J Antibiot (Tokyo) 2014; 68:185-90. [PMID: 25204346 DOI: 10.1038/ja.2014.123] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 08/05/2014] [Accepted: 08/11/2014] [Indexed: 11/09/2022]
Abstract
Two new 32-membered macrolide compounds, named Novonestmycins A (1) and B (2), were isolated from the soil strain Streptomyces phytohabitans HBERC-20821. Their structures were elucidated by using spectroscopic methods, including 1D, 2D-NMR and MS spectrometry. The two compounds showed strong activities against the phytophathogenic fungi Corynespora cassiicola, Rhizoctonia solani and Septoria nodorum, with MIC values of 0.78, 0.39 and 0.78 μg ml(-1), respectively. In addition, the two compounds exhibited potent inhibitory activities against four different human tumor cell lines as well as one 5-FU-resistant human hepatocellular carcinoma cell line, with IC50 of 0.15-0.48 μg ml(-1) and 0.24-1.34 μg ml(-1), respectively.
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Affiliation(s)
- Zhongyi Wan
- College of Life Sciences, Wuhan University, Wuhan, PR China
| | - Wei Fang
- National Engineering Research Center for Bio-pesticide, Hubei Academy of Agricultural Sciences, Wuhan, PR China
| | - Liqiao Shi
- National Engineering Research Center for Bio-pesticide, Hubei Academy of Agricultural Sciences, Wuhan, PR China
| | - Kaimei Wang
- National Engineering Research Center for Bio-pesticide, Hubei Academy of Agricultural Sciences, Wuhan, PR China
| | - Yani Zhang
- National Engineering Research Center for Bio-pesticide, Hubei Academy of Agricultural Sciences, Wuhan, PR China
| | - Zhigang Zhang
- National Engineering Research Center for Bio-pesticide, Hubei Academy of Agricultural Sciences, Wuhan, PR China
| | - Zhaoyuan Wu
- National Engineering Research Center for Bio-pesticide, Hubei Academy of Agricultural Sciences, Wuhan, PR China
| | - Ziwen Yang
- 1] College of Life Sciences, Wuhan University, Wuhan, PR China [2] National Engineering Research Center for Bio-pesticide, Hubei Academy of Agricultural Sciences, Wuhan, PR China
| | - Yucheng Gu
- Syngenta Jealott's Hill International Research Centre, Bracknell, Berkshire, UK
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16
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Basar N, Damodaran K, Liu H, Morris GA, Sirat HM, Thomas EJ, Curran DP. Systematic comparison of sets of (13)C NMR spectra that are potentially identical. Confirmation of the configuration of a cuticular hydrocarbon from the cane beetle Antitrogus parvulus. J Org Chem 2014; 79:7477-90. [PMID: 25019530 PMCID: PMC4136713 DOI: 10.1021/jo5012027] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A systematic process is introduced to compare (13)C NMR spectra of two (or more) candidate samples of known structure to a natural product sample of unknown structure. The process is designed for the case where the spectra involved can reasonably be expected to be very similar, perhaps even identical. It is first validated by using published (13)C NMR data sets for the natural product 4,6,8,10,16,18-hexamethyldocosane. Then the stereoselective total syntheses of two candidate isomers of the related 4,6,8,10,16-pentamethyldocosane natural product are described, and the process is applied to confidently assign the configuration of the natural product as (4S,6R,8R,10S,16S). This is accomplished even though the chemical shift differences between this isomer and its (16R)-epimer are only ±5-10 ppb (±0.005-0.01 ppm).
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Affiliation(s)
- Norazah Basar
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia , Skudai, 81310 Johor, Malaysia
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17
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Itoh T, Montgomery TP, Recio A, Krische MJ. Asymmetric alcohol C-H allylation and syn-crotylation: C9-C20 of tetrafibricin. Org Lett 2014; 16:820-3. [PMID: 24422777 PMCID: PMC3932543 DOI: 10.1021/ol403566w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The C9-C20 segment of the fibrinogen receptor inhibitor tetrafibricin was prepared in 10 steps (longest linear sequence). Ruthenium catalyzed enantioselective syn-crotylation is used to construct C9-C13. Iridium catalyzed asymmetric alcohol C-H allylation of a commercial malic acid derived alcohol is used to construct C14-C20. Recovery and recycling of the iridium catalyst is described.
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Affiliation(s)
- Takahiko Itoh
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712
| | - T. Patrick Montgomery
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712
| | - Antonio Recio
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712
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18
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Nuhant P, Roush WR. Enantio- and diastereoselective synthesis of N-acetyl dihydrotetrafibricin methyl ester. J Am Chem Soc 2013; 135:5340-3. [PMID: 23530855 PMCID: PMC3679187 DOI: 10.1021/ja401918r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly diastereoselective synthesis of N-acetyl dihydrotetrafibricin methyl ester (34) is described. The synthesis features three enantioselective double allylboration reactions and an intramolecular hydrosilylation/Fleming-Tamao oxidation sequence to establish seven of the hydroxy-bearing stereocenters of 34. Especially noteworthy is the fragment-assembly double allyboration reaction of 2 and 7 using reagent 3, which provides the advanced intermediate 6 with >20:1 diastereoselectivity.
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Affiliation(s)
- Philippe Nuhant
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458
| | - William R. Roush
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458
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19
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Yuan G, Li P, Pan W, Pang H, Chen S. The relative configurations of azalomycins F5a, F4a and F3a. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.09.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Molinski TF, Morinaka BI. INTEGRATED APPROACHES TO THE CONFIGURATIONAL ASSIGNMENT OF MARINE NATURAL PRODUCTS. Tetrahedron 2012; 68:9307-9343. [PMID: 23814320 PMCID: PMC3694619 DOI: 10.1016/j.tet.2011.12.070] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Tadeusz F. Molinski
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive MC0358, La Jolla, CA, 92093
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Drive MC0358, La Jolla, CA, 92093
| | - Brandon I. Morinaka
- Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive MC0358, La Jolla, CA, 92093
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21
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Helaly SE, Kulik A, Zinecker H, Ramachandaran K, Tan GYA, Imhoff JF, Süssmuth RD, Fiedler HP, Sabaratnam V. Langkolide, a 32-membered macrolactone antibiotic produced by Streptomyces sp. Acta 3062. JOURNAL OF NATURAL PRODUCTS 2012; 75:1018-1024. [PMID: 22642587 DOI: 10.1021/np200580g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A new 32-membered macrolactone antibiotic, named langkolide, was isolated from the mycelium of Streptomyces sp. Acta 3062. The langkolide structure was determined by HR-MS and 1D and 2D NMR as a 32-membered macrolactone connected from an overhanging polyketide tail to a naphthoquinone unit mediated by two carbohydrate moieties. The producing strain was isolated from a rhizosphere soil of Clitorea sp. collected at Burau Bay, Langkawi, Malaysia, and was characterized by its morphological and chemotaxonomic features in addition to its 16S rRNA gene sequence. It was identified as a member of the Streptomyces galbus clade. Langkolide exhibited various bioactivities including antimicrobial and antiproliferative activities. Furthermore, langkolide inhibited human recombinant phosphodiesterase 4 with an IC(50) value of 0.48 μM.
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Affiliation(s)
- Soleiman E Helaly
- Institut für Chemie, Technische Universität Berlin, 10623 Berlin, Germany
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22
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Krishna PR, Reddy BK, Srinivas P. Total synthesis of 2-(2-hydroxyalkyl)-piperidine alkaloids (−)-halosaline and (−)-8-epi-halosaline via iterative asymmetric allylation/RCM strategy. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.11.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Nuhant P, Kister J, Lira R, Sorg A, Roush WR. Development of a Double Allylboration Reagent Targeting 1,5-syn-(E)-Diols: Application to the Synthesis of the C(23)-C(40) Fragment of Tetrafibricin. Tetrahedron 2011; 67:6497-6512. [PMID: 21857752 PMCID: PMC3156408 DOI: 10.1016/j.tet.2011.06.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Interest in the synthesis of the C(23)-C(40) fragment 2 of tetrafibricin prompted us to develop a new method for the synthesis of 1,5-syn-(E)-diols. Toward this end, the kinetically controlled hydroboration of allenes 6, 33, ent-39, 42 and 45 with the Soderquist borane 25R were studied. Tetrabutylammonium allenyltrifluoroborate 45 gave superior results and was utilized in a double allylboration sequence with two different aldehydes to provide the targeted 1,5-syn-(E)-diols in generally high yields (72-98%), and with high enantioselectivity (>95% e.e.), diastereoselectivity (d.r. >20:1), and (E)/(Z) selectivity (>20:1). This new method was applied to the synthesis of the C(23)-C(40) fragment 2 of tetrafibricin.
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Affiliation(s)
| | | | | | | | - William R. Roush
- Departments of Chemistry, The Scripps Research Institute, Florida, 130 Scripps Way, Jupiter, FL 33458, USA
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24
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Kumpulainen ETT, Kang B, Krische MJ. C(21)-C(40) of tetrafibricin via metal catalysis: beyond stoichiometric chiral reagents, auxiliaries, and premetalated nucleophiles. Org Lett 2011; 13:2484-7. [PMID: 21469726 PMCID: PMC3084888 DOI: 10.1021/ol200735r] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The C(21)-C(40) fragment of fibrinogen receptor inhibitor tetrafibricin was prepared in 12 steps from propane diol (longest linear sequence). In this approach, 6 C-C bonds are formed via asymmetric iridium catalyzed transfer hydrogenative carbonyl allylation and 2 C═C bonds are formed via Grubbs olefin cross-metathesis.
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Affiliation(s)
- Esa T. T. Kumpulainen
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712
| | - Byungsoo Kang
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712
| | - Michael J. Krische
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, TX 78712
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25
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Abstract
Efficient syntheses of suitably functionalized top and bottom fragments of tetrafibricin are described. The bottom fragment is prepared by two consecutive Kocienski-Julia couplings, while the top fragment synthesis features a dithiane alkylation and a Horner-Wadsworth-Emmons reaction.
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Affiliation(s)
- Venugopal Gudipati
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260 USA
| | - Dennis P. Curran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260 USA
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26
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Kister J, Nuhant P, Lira R, Sorg A, Roush WR. Enantio- and diastereoselective synthesis of (E)-1,5-syn-diols: application to the synthesis of the C(23)-C(40) fragment of tetrafibricin. Org Lett 2011; 13:1868-71. [PMID: 21375316 PMCID: PMC3064748 DOI: 10.1021/ol2003836] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A highly stereoselective synthesis of (E)-1,5-syn-diols 6 is described. The kinetically controlled hydroboration of allenyltrifluoroborate 8 with Soderquist borane 2 provides the (Z)-allylic trifluoroborate 9, which undergoes sequential allylboration with two different aldehydes to provide (E)-1,5-syn-diols 6 in 72-98% yields with >95% ee and >20:1 dr. Application of this method to the synthesis of the tetrafibricin C(23)-C(40) fragment 19 is described.
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Affiliation(s)
- Jeremy Kister
- Department of Chemistry, Scripps Florida, Jupiter, FL 33458
| | | | - Ricardo Lira
- Department of Chemistry, Scripps Florida, Jupiter, FL 33458
| | - Achim Sorg
- Department of Chemistry, Scripps Florida, Jupiter, FL 33458
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27
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Friestad GK, Sreenilayam G. Versatile Configuration-Encoded Strategy for Rapid Synthesis of 1,5-Polyol Stereoisomers. Org Lett 2010; 12:5016-9. [PMID: 20939544 DOI: 10.1021/ol1021417] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gregory K. Friestad
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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28
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Schweiger P, Gross H, Deppenmeier U. Characterization of two aldo-keto reductases from Gluconobacter oxydans 621H capable of regio- and stereoselective alpha-ketocarbonyl reduction. Appl Microbiol Biotechnol 2010; 87:1415-26. [PMID: 20414648 DOI: 10.1007/s00253-010-2607-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2010] [Revised: 04/01/2010] [Accepted: 04/04/2010] [Indexed: 10/19/2022]
Abstract
Two cytosolic NADPH-dependent carbonyl reductases from Gluconobacter oxydans 621H, Gox0644 and Gox1615, were heterologously produced in Escherichia coli. The recombinant proteins were purified to homogeneity and characterized. Gox0644 and Gox1615 were dimers with native molecular masses of 66.1 and 74.5 kDa, respectively. The enzymes displayed broad substrate specificities and reduced alpha-ketocarbonyls at the keto moiety most proximal to the terminus of the alkyl chain to produce alpha-hydroxy carbonyls, as demonstrated by NMR. With respect to stereoselectivity, protein Gox0644 specifically reduced 2,3-pentanedione to 2R-hydroxy-pentane-3-one, whereas Gox1615 produced 2S-hydroxy-pentane-3-one. Both enzymes also reduced 1-phenyl-1,2-propanedione to 2-hydroxy-1-phenylpropane-1-one, which is a key intermediate in the production of numerous pharmaceuticals, such as antifungal azoles and antidepressants. Gox0644 displayed highest activities with 2,3-diones, alpha-ketoaldehydes, alpha-keto esters, and 2,5-diketogluconate. Gox1615 was less active with these substrates, but displayed a broader substrate spectrum reducing a variety of alpha-diketones and aldehydes.
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Affiliation(s)
- Paul Schweiger
- Institute für Mikrobiologie und Biotechnologie, 168 Meckenheimer Allee, 53115, Bonn, Germany
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29
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Zhang K, Curran DP. Fluorous Mixture Synthesis of Four Stereoisomers of the C21-C40 Fragment of Tetrafibricin. Synlett 2010; 2010:667-674. [PMID: 20686632 PMCID: PMC2914344 DOI: 10.1055/s-0029-1219376] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Four stereoisomers of the C21-C40 fragment are synthesized in a single exercise with the aid of fluorous tagging to encode configurations at C37 and C33. After demixing and detagging, the isomers were found to have substantially identical (1)H NMR spectra. However, there were some small but reliable differences in their (13)C NMR spectra.
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Affiliation(s)
- Kai Zhang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA Fax +1(412)6249861
| | - Dennis P. Curran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA Fax +1(412)6249861
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30
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Gudipati V, Bajpai R, Curran DP. SULFANYLATION OF 1,3-DITHIANE ANIONS BY 5-(ALKYLSULFANYL)-1-PHENYLTETRAZOLES. COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS 2009; 74:7711-7783. [PMID: 20651936 DOI: 10.1135/cccc2008195] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
An unusual reaction between 1,3-dithiane anions and by 5-(alkylsulfanyl)-1-phenyltetrazoles has been discovered in which the dithiane anion formally displaces the 1-phenyltetrazole ring from sulfur to provide a sulfanylated dithiane.
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Affiliation(s)
- Venugopal Gudipati
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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31
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Kwon HC, Kauffman CA, Jensen PR, Fenical W. Marinisporolides, polyene-polyol macrolides from a marine actinomycete of the new genus Marinispora. J Org Chem 2009; 74:675-84. [PMID: 19132943 DOI: 10.1021/jo801944d] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two new polyene macrolides, marinisporolides A and B (1, 2), were isolated from the saline culture of the marine actinomycete, strain CNQ-140, identified as a member of the new marine genus Marinispora. The marinisporolides are 34-membered macrolides composed of a conjugated pentaene and several pairs of 1,3-dihydroxyl functionalities. Marinisporolide A (1) contains a bicyclic spiro-bis-tetrahydropyran ketal functionality, while marinisporolide B (2) is the corresponding hemiketal. The structures of these new compounds were assigned by combined spectral and chemical methods including extensive 2D NMR experiments and correlations of (13)C NMR data with Kishi's Universal NMR Database. Chemical modifications, including methanolysis, acetonide formation, and application of the modified Mosher method, provided the full stereostructures of these molecules. Three additional macrolides, marinisporolides C-E (3-5), which are olefin geometric isomers of marinisporolide A (1), were also isolated and their structures defined. Under room light, marinisporolides A and B readily photoisomerize to C-E indicating that they are most likely produced by photochemical conversion during the cultivation or isolation procedures. Although polyenes, marinisporolides A (1) and B (2) showed weak to no antifungal activity against Candida albicans.
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Affiliation(s)
- Hak Cheol Kwon
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, California 92093-0204, USA
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32
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Bifulco G, Dambruoso P, Gomez-Paloma L, Riccio R. Determination of relative configuration in organic compounds by NMR spectroscopy and computational methods. Chem Rev 2007; 107:3744-79. [PMID: 17649982 DOI: 10.1021/cr030733c] [Citation(s) in RCA: 452] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Giuseppe Bifulco
- Dipartimento di Scienze Farmaceutiche, University of Salerno, Via Ponte Don Melillo, 84084 Fisciano, Salerno, Italy.
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33
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Abstract
[reaction: see text] A stereoselective synthesis of the C(1)-C(19) fragment of tetrafibricin has been accomplished via a highly diastereoselective double allylboration reaction of 6-8 and an iodonium ion promoted urethane cyclization for the installation of the C(15) alkoxy function in 3.
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Affiliation(s)
- Ricardo Lira
- Departments of Chemistry and Biochemistry, Scripps Florida, Jupiter, Florida 33458, USA
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34
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McConnell O, Bach A, Balibar C, Byrne N, Cai Y, Carter G, Chlenov M, Di L, Fan K, Goljer I, He Y, Herold D, Kagan M, Kerns E, Koehn F, Kraml C, Marathias V, Marquez B, McDonald L, Nogle L, Petucci C, Schlingmann G, Tawa G, Tischler M, Williamson RT, Sutherland A, Watts W, Young M, Zhang MY, Zhang Y, Zhou D, Ho D. Enantiomeric separation and determination of absolute stereochemistry of asymmetric molecules in drug discovery—Building chiral technology toolboxes. Chirality 2007; 19:658-82. [PMID: 17390370 DOI: 10.1002/chir.20399] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The application of Chiral Technology, or the (extensive) use of techniques or tools for the determination of absolute stereochemistry and the enantiomeric or chiral separation of racemic small molecule potential lead compounds, has been critical to successfully discovering and developing chiral drugs in the pharmaceutical industry. This has been due to the rapid increase over the past 10-15 years in potential drug candidates containing one or more asymmetric centers. Based on the experiences of one pharmaceutical company, a summary of the establishment of a Chiral Technology toolbox, including the implementation of known tools as well as the design, development, and implementation of new Chiral Technology tools, is provided.
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Affiliation(s)
- Oliver McConnell
- Wyeth Research, Chemical and Screening Sciences, Collegeville, PA 19426, USA.
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35
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Seike H, Ghosh I, Kishi Y. Attempts to Assemble a Universal NMR Database without Synthesis of NMR Database Compounds. Org Lett 2006; 8:3861-4. [PMID: 16898836 DOI: 10.1021/ol061580t] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[structure: see text] The feasibility of assembling 3JH,H profiles from NMR data collected on relevant, but not necessarily specific, NMR database compounds representing a given stereocluster was demonstrated. By this approach, the 3JH,H profile was created for the contiguous tetraol peracetate stereocluster. The reliability and applicability of the database thus assembled were demonstrated for known peracetates derived from two heptoses.
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Affiliation(s)
- Hirofumi Seike
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA
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36
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Higashibayashi S, Kishi Y. Assignment of the relative and absolute configurations of acyclic secondary 1,2-diols. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.08.101] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Recently, the isolation of a new class of human arachidonic acid tetrahydrofuran oxidation products, the isofurans (IsoF's), was reported. These new compounds are available from natural sources only in microgram quantities as mixtures. The enantioselective preparation of a versatile epoxide intermediate and its conversion to the enantiomerically pure isofurans SC-Delta(13)-9-IsoF and 15-epi-SC-Delta(13)-9-IsoF are described. This synthesis will make these metabolites available for physiological evaluation.
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Affiliation(s)
- Douglass F Taber
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA.
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Abstract
[structure: see text] A sequence of chemoselective cross-metathesis reactions and enantioselective allyltitanations of aldehydes has been used to prepare the C1-C13, C15-C26, and C27-C40 fragments of tetrafibricin.
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Affiliation(s)
- Samir BouzBouz
- Laboratoire de Chimie Organique associé au CNRS, ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
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