Search Results - "HIROSE, Tomoyasu"
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Afidopyropen, a novel insecticide originating from microbial secondary extracts
Published in Scientific reports (18-02-2022)“…Afidopyropen, a novel insecticide, is a derivative of pyripyropene A, which is produced by the filamentous fungus Penicillium coprobium. Afidopyropen has…”
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2
Azithromycin, a 15-membered macrolide antibiotic, inhibits influenza A(H1N1)pdm09 virus infection by interfering with virus internalization process
Published in Journal of antibiotics (01-10-2019)“…The pandemic influenza 2009 (A(H1N1)pdm09) virus currently causes seasonal and annual epidemic outbreaks. The widespread use of anti-influenza drugs such as…”
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3
Discoveries and Syntheses of Highly Potent Antimalarial Troponoids
Published in Chemical & pharmaceutical bulletin (01-06-2021)“…Novel derivatives of puberulic acid were synthesized and their antimalarial properties were evaluated in vitro against the Plasmodium falciparum K1 parasite…”
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4
Studies on the Catechin Constituents of Bark of Cinnamomum sieboldii
Published in Chemical & pharmaceutical bulletin (01-05-2023)“…Screening for bioactivity related to anti-infective, anti-methicillin-resistant Staphylococcus aureus (MRSA) and anti-viral activity, led us to identify active…”
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5
Synthesis of the Antimalarial Peptide Aldehyde, a Precursor of Kozupeptin A, Utilizing a Designed Hydrophobic Anchor Molecule
Published in Organic letters (18-10-2019)“…This Letter describes an efficient method of synthesizing highly bioactive peptide aldehydes without any concern about epimerization by liquid-phase peptide…”
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6
Medermycin Inhibits TNFα-Promoted Inflammatory Reaction in Human Synovial Fibroblasts
Published in International journal of molecular sciences (01-09-2023)“…Synovial inflammation plays a crucial role in the destruction of joints and the experience of pain in osteoarthritis (OA). Emerging evidence suggests that…”
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Pot-economical synthesis of cyclic depsipeptides using a hydrophobic anchor molecule toward the construction of an unnatural peptide library
Published in Tetrahedron (03-12-2022)“…Cyclic peptides and cyclic depsipeptides are important sources of novel lead compounds in drug discovery research. However, solid phase peptide synthesis…”
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Towards the total synthesis of aurodox: Preparation of the key hemiacetal-lactone
Published in Tetrahedron letters (02-03-2021)“…[Display omitted] •Toward the total synthesis of aurodox.•Chemo- and stereo-selective epoxidation.•Construction of 5-membered lactone in cascade sequence. We…”
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Pd-catalyzed Regio- and Stereoselective Hydrostannylation of an Alkyl Ethynyl Ether/One-Pot Stille Coupling Enables the Synthesis of 14-Membered Macrolactone of Luminamicin
Published in Organic letters (05-03-2021)“…Regio- and stereoselective hydrostannylation of alkyl ethynyl ethers generates alkenyl ethers, which are useful building blocks in organic synthesis. This…”
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10
A new analog of dihydroxybenzoic acid from Saccharopolyspora sp. KR21-0001
Published in Beilstein journal of organic chemistry (29-02-2024)“…Actinomycetes are well-known as the main producers of bioactive compounds such as antibiotics, anticancers, and immunosuppressants. Screening of natural…”
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11
Koshidacins A and B, Antiplasmodial Cyclic Tetrapeptides from the Okinawan Fungus Pochonia boninensis FKR-0564
Published in Journal of natural products (Washington, D.C.) (25-11-2022)“…Two new antiplasmodial peptides, named koshidacins A (1) and B (2), were discovered from the culture broth of the Okinawan fungus Pochonia boninensis FKR-0564…”
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12
Synthesis and Evaluation of Antibacterial Activity of Bottromycins
Published in Journal of organic chemistry (06-07-2018)“…Total synthesis of bottromycin A2 can be accomplished through a diastereoselective Mannich reaction of a chiral sulfinamide, mercury-mediated intermolecular…”
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13
Fusaramin, an antimitochondrial compound produced by Fusarium sp., discovered using multidrug-sensitive Saccharomyces cerevisiae
Published in Journal of antibiotics (01-09-2019)“…A new compound, fusaramin ( 1 ), along with three known compounds, sambutoxin ( 2 ), N -demethylsambutoxin ( 3 ) and (−)-6-deoxyoxysporidinone ( 4 ), was…”
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14
Synthesis and insecticidal efficacy of pyripyropene derivatives. Part II—Invention of afidopyropen
Published in Journal of antibiotics (01-09-2019)“…The synthesis and insecticidal activity of a series of pyripyropene derivatives with cyclopropanecarbonyloxy group(s) at the C-1, C-7 and/or C-11 position(s)…”
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15
Actinoallolides A–E, New Anti-trypanosomal Macrolides, Produced by an Endophytic Actinomycete, Actinoallomurus fulvus MK10-036
Published in Organic letters (20-02-2015)“…Five new anti-trypanosomal macrolides, actinoallolides A–E (1–5), were discovered from the cultured broth of Actinoallomurus fulvus MK10-036. The structures of…”
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Unified enantioselective total synthesis of 3,6-dioxygenated diketopiperazine natural products, diatretol and lepistamides A, B and C
Published in Tetrahedron letters (16-03-2021)“…[Display omitted] •Total synthesis and determination of the absolute configuration of Dietretol was accomplished.•This synthetic approach involves the use of a…”
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Synthesis and insecticidal efficacy of pyripyropene derivatives focusing on the C-1, C-7, and C-11 positions’ substituent groups
Published in Journal of antibiotics (01-09-2018)“…The C-1, C-7, and C-11 positions of pyripyropene A were chemically modified to improve the insecticidal activity. Some derivatives showed higher insecticidal…”
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18
Efficient synthesis of a ryanodine binding inhibitor verticilide using two practical approaches
Published in Tetrahedron letters (26-03-2020)“…[Display omitted] •Total synthesis of symmetrical 24 membered cyclicdepsipeptide.•Solid support and hydrophobic anchor molecule are practical and efficient…”
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19
Fungal Secondary Metabolite Exophillic Acid Selectively Inhibits the Entry of Hepatitis B and D Viruses
Published in Viruses (06-04-2022)“…Current anti-hepatitis B virus (HBV) drugs are suppressive but not curative for HBV infection, so there is considerable demand for the development of new…”
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Ivermectin Inhibits HBV Entry into the Nucleus by Suppressing KPNA2
Published in Viruses (01-11-2022)“…Hepatitis B virus (HBV) specifically infects human hepatocytes and increases the risks of cirrhosis and liver cancer. Currently, nucleic acid analogs are the…”
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