WitrynaThe total synthesis of KB-3346-5A 9, named naphthacemycin A 9, has been accomplished by combining the Dötz reaction and Suzuki-Miyaura cross coupling as well as employing Friedel-Crafts reaction with dienone-phenol rearrangement as key steps.We also describe the preparation of the simplified tetarimycin A and … WitrynaNaphthacemycin B2 C28H24O7 CID 139589431 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, …
Discovery of glycosylated naphthacemycins and elucidation of the ...
Naphthacemycins (1–17) were purified from a cultured broth of Streptomyces sp. KB-3346-5, isolated from a soil sample collected in Okinawa Prefecture, Japan.5 They are red powders. Compounds 2, 4-6, 8, 11 and 14–17 have one chlorine atom, while 7 and 10 have two chlorine atoms. The IR spectra … Zobacz więcej The molecular formula of naphthacemycin A9 (9) was established as C30H26O8 by HR-FAB-MS. 1H and 13C NMR spectra and HSQC analysis revealed the presence of 30 carbons, including six methyl, six sp2 methine, one … Zobacz więcej The molecular formula of naphthacemycin B1 (12) was established as C27H22O7 by HR-FAB-MS, which indicated 12 was 28 mass units (CO) less than 1. 1H and 13C NMR spectra and HSQC analysis revealed the presence of … Zobacz więcej The circumvention of β-lactam resistance in MRSA was measured by enhancement of imipenem activity on MRSA using the paper disk method. Naphthacemycins alone showed … Zobacz więcej The molecular formula of naphthacemycin C2 (17) was established as C33H31ClO9 by HR-FAB-MS, which indicated 17 was 58 mass units (C3H6O) more than 11. 1H and 13C NMR … Zobacz więcej WitrynaThe total synthesis of KB-3346-5A 9, named naphthacemycin A 9, has been accomplished by combining the Dötz reaction and Suzuki-Miyaura cross coupling as … graffiti hair rexburg
Synthesis of (±)-Naphthacemycin A 9 - PubMed
Witryna8 lis 2024 · Natamycyna jest antybiotykiem, którego główne zadanie polega na zwalczaniu stanów grzybiczych. Zwalcza drożdżaki oraz … WitrynaThe studies towards the total synthesis of the fasamycin congener naphthacemycin B1 led to the development of a new reductive Friedel-Crafts cyclization, enabling an efficient assembly of the dihydro-anthracene core-structure. The desired (enolendo) cyclization was achieved with three different model substrates, though yet unselective. Witryna30 maj 2024 · Dość enigmatyczna nazwa związku chemicznego N-acetylocysteina, potocznie rozpoznawana, pod skrótem NAC, to pochodna cysteiny w konformacji L. … graffiti haircuts rexburg