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Literatura académica sobre el tema "Ophiorrhiside E"
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Artículos de revistas sobre el tema "Ophiorrhiside E"
Kitajima, Mariko, Tadayoshi Onozawa, Noriyuki Kogure y Hiromitsu Takayama. "Elucidation of Absolute Configuration of Ophiorrhiside A by Comparison of ECD Spectra with That of Model Chiral Compound Having a 1,2,3,4-Tetrahydro-β-Carbolin-3-one Skeleton". HETEROCYCLES 102, n.º 1 (2021): 35. http://dx.doi.org/10.3987/com-20-14351.
Texto completoOnozawa, Tadayoshi, Mariko Kitajima, Noriyuki Kogure y Hiromitsu Takayama. "Asymmetric Total Synthesis and Evaluation of Antitumor Activity of Ophiorrhisine A and Its Derivatives". Journal of Organic Chemistry 83, n.º 24 (19 de noviembre de 2018): 15312–22. http://dx.doi.org/10.1021/acs.joc.8b02554.
Texto completoCao, Wei, Yingchao Dou, Cyrille Kouklovsky y Guillaume Vincent. "Total Synthesis of Ophiorrhine A, G and Ophiorrhiside E Featuring a Bioinspired Intramolecular Diels‐Alder Cycloaddition". Angewandte Chemie, 22 de julio de 2022. http://dx.doi.org/10.1002/ange.202209135.
Texto completoCao, Wei, Yingchao Dou, Cyrille Kouklovsky y Guillaume Vincent. "Total Synthesis of Ophiorrhine A, G and Ophiorrhiside E Featuring a Bioinspired Intramolecular Diels‐Alder Cycloaddition". Angewandte Chemie International Edition, 22 de julio de 2022. http://dx.doi.org/10.1002/anie.202209135.
Texto completoTesis sobre el tema "Ophiorrhiside E"
Cao, Wei. "Total synthesis of ophiorrhine A, G and ophiorrhiside E and synthetic studies towards the total synthesis of pestalustaine A". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF077.
Texto completoOphiorrhine A, G and ophiorrhiside E are monoterpene indole alkaloids which were isolated from the plant Ophiorrhiza japonica and trichocarpon. We achieved the first total synthesis of ophiorrhine A, G and ophiorrhiside E. Several strategies were investigated to construct the indolopyridone moiety of ophiorrhiside E, the postulated biosynthetic precursor of ophiorrhine A. Eventually, the Friedel-Crafts-type coupling of indolyl-acetamide with secologanin-derived acid chloride delivered ophiorrhine G. Cyclodehydratation of a protected form of the latter was followed by the desired spontaneous intramolecular Diels-Alder cycloaddition of protected ophiorrhiside E leading to ophiorrhine A, which could be converted to an unnatural product with a carbazole skeleton. We have investigated the total synthesis of pestalustaine A, a sesquiterpenoid which was isolated from an endophytic fungus pestalotiopsis adusta. We performed a ring expansion of a 6-membered intermediated to form the 7-membered core, a ring closing metathesis of a diene to construct the bridged 7/7 skeleton, and an intramolecular 1,4 addition to yield the pivotal tricyclic 7/5/6 framework. Through X-ray diffraction analysis of a crystal of an intermediate with the 7/5/6 core, we discovered that our structure differs from the one proposed in the isolation publication. By analyzing the spectra of the isolated natural product, we thought that the authors might have misassigned the structure