Výsledky vyhledávání - "Junichi Shiina"

Akademický článek

5-(7-Methanesulfonyl-2-morpholin-4-yl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidin-4-yl)-pyrimidin-2-ylamine mesylate

Autor: Masahide Aoki, Takahiro Ichige, Junichi Shiina, Satoshi Tanida, Koji Shiraki, Masaki Ishigai

Publikováno v: IUCrData, Vol 2, Iss 9, p x171292 (2017)

In the title compound, C15H20N7O3S+·CH3O3S− (CH5132799 mesylate), two molecular entities form a salt with proton transfer from methanesulfonic acid to the aminopyrimidine moiety of CH5132799. In the crystal, methanesulfonate is retained by bifurca

Externí odkaz: https://doaj.org/article/ca1c05c46ac14e978f3d5f6da182e843

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5-(7-Methanesulfonyl-2-morpholin-4-yl-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidin-4-yl)-pyrimidin-2-ylamine mesylate

Autor: Aoki Masahide, Junichi Shiina, Satoshi Tanida, Koji Shiraki, Takahiro Ichige, Masaki Ishigai

Publikováno v: IUCrData, Vol 2, Iss 9, p x171292 (2017)

In the title compound, C15H20N7O3S+·CH3O3S−(CH5132799 mesylate), two molecular entities form a salt with proton transfer from methanesulfonic acid to the aminopyrimidine moiety of CH5132799. In the crystal, methanesulfonate is retained by bifurcat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea6e66dc447b45297963685549c072c7
http://scripts.iucr.org/cgi-bin/paper?S2414314617012925

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Synthesis of Pinguisane-Type Sesquiterpenoids Acutifolone A, Pinguisenol, and Bisacutifolones by a Diels–Alder Dimerization Reaction

Autor: Kensuke Nakamura, Junichi Shiina, Rika Obata, Shigeru Nishiyama, Masataka Oikawa

Publikováno v: European Journal of Organic Chemistry. 2007:5190-5197

The total synthesis of pinguisane-type sesquiterpenoids, acutifolone A (1) and pinguisenol (2), has been achieved by using the Mukaiyama aldol reaction as the key step. The intermolecular Diels–Alder reaction of these monomeric natural products suc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9a76c761ee918482bc9b578cc151885
https://doi.org/10.1002/ejoc.200700522

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A new approach to the bicyclo[4.3.0] ring system of natural products from the liverwort: total synthesis of (±)-chiloscyphone and (±)-isochiloscyphone

Autor: Shigeru Nishiyama, Junichi Shiina

Publikováno v: Tetrahedron Letters. 45:9033-9036

Construction of the tricyclic derivative 5, a common intermediate for the synthesis of sesquiterpenoids 1–4, was accomplished by using the intramolecular Diels–Alder reaction. Availability of 5 was demonstrated by effective total synthesis of chi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c190bc34094a7260a8628c5394cbc377
https://doi.org/10.1016/j.tetlet.2004.10.033

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Intramolecular Diels–Alder reaction leading to tricyclic derivatives as intermediates of natural products synthesis

Autor: Shigeru Nishiyama, Junichi Shiina

Publikováno v: Tetrahedron. 59:6039-6044

Tricyclic compounds 4a and 4b possessing a bicyclo[4.3.0] moiety, were successfully synthesized by using the intramolecular Diels–Alder reaction. The siloxy- rather than acyloxy-substituents increased the ratio of the endo -cylcoadducts 10 and 12 .

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::714960ddccf1df6b24043c053f1890d7
https://doi.org/10.1016/s0040-4020(03)01013-5

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ChemInform Abstract: Synthesis of Pinguisane-Type Sesquiterpenoids Acutifolone A (I), Pinguisenol (II), and Bisacutifolones by a Diels—Alder Dimerization Reaction

Autor: Shigeru Nishiyama, Junichi Shiina, Kensuke Nakamura, Rika Obata, Masataka Oikawa

Publikováno v: ChemInform. 39

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52f3855eb6299684e99d8c6f263252c7
https://doi.org/10.1002/chin.200808183

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The First Total Synthesis of Acutifolone A, a Pinguisane-Type Sesquiterpenoid Isolated from the Japanese Liverwort Porella acutifolia subsp. tosana

Autor: Junichi Shiina, Shigeru Nishiyama

Publikováno v: ChemInform. 37

The first total synthesis of acutifolone A, a sesquiterpenoid carrying the bicyclo[4.3.0]nonane structure 1, was successfully achieved from the intermediate 6 produced by the intramolecular Diels–Alder reaction.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d8bf71052b8970c348d5fc04084c6fd
https://doi.org/10.1002/chin.200608159

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A New Approach to the Bicyclo[4.3.0] Ring System of Natural Products from the Liverwort: Total Synthesis of (.+-.)-Chiloscyphone (I) and (.+-.)-Isochiloscyphone (II)

Autor: Junichi Shiina, Shigeru Nishiyama

Publikováno v: ChemInform. 36

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64f599cccb46848deadfc2b8db1503a2
https://doi.org/10.1002/chin.200513206

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Akademický článek

Synthesis of Chiloscyphones and the Biological Activities of Their Synthetic Intermediates Against Methicillin-Resistant Staphylococcus aureus (MRSA).

Autor: Junichi Shiina, Rika Obata, Hiroshi Tomoda, Shigeru Nishiyama

Publikováno v: European Journal of Organic Chemistry; May2006, Vol. 2006 Issue 10, p2362-2370, 9p

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