Shigeo Katsumura

Kwansei Gakuin University

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i-10 index

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Document Type

Co-Authors

Hajime Mori

Kyoto Institute of Technology

Katsunori Tanaka

Tokyo Institute of Technology

Takayuki Kajikawa

Kwansei Gakuin University

Noriyuki Furuichi

Chugai Pharma (United States)

Kiyoshi Ikeda

Hiroshima International University

Sachihiko Isoe

Osaka City University

Shinobu Fujii

Osaka University of Pharmaceutical Sciences

Seiji Iwama

Sumitomo Dainippon Pharma (Japan)

Toyoharu Kobayashi

Tokyo University of Pharmacy and Life Sciences

Toshikazu Hakogi

Futaba (Japan)

Cooperative Institutions

Kwansei Gakuin University

Osaka City University

Osaka University

Osaka University of Pharmaceutical Sciences

Kyoto University

The University of Tokyo

Åbo Akademi University

University of Connecticut

Nagoya University

Hokkaido University

Author Statistics

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Citation

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ChemInform Abstract: An Efficient Synthesis of Short‐Chain Sphingomyelin Analogues and Their Susceptibility to Hydrolysis Catalyzed by Sphingomyelinase.

ChemInform (1997)

Masahiro Murakami Seiji Iwama Shinobu Fujii Kiyoshi Ikeda Shigeo Katsumura

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Chain (unit)

10.1002/chin.199745254

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Citations (0)

Highly Activated Vinyl Hydrogen in a Significantly Twisted Styrene

The Journal of Organic Chemistry (2006)

Hajime Mori Takafumi Matsuo Yasunori Yoshioka Shigeo Katsumura

The novel example of a vinylic hydrogen more reactive than a benzylic hydrogen was found by treatment of a twisted styrene derivative with a strong base followed by D2O quenching. In this paper, the full details of the examples of the highly activated vinyl hydrogens in twisted styrene derivatives are described, with a discussion on the correlation between the reactivity of the vinyl hydrogens and the magnitude of the twist. The highly reactive vinyl hydrogens could be rationalized by considering the novel orbital interaction between the π* orbital of the benzene ring and the σ orbital of the vinylic C−H bond in the twisted styrene derivatives.

Reactivity

Derivative (finance)

10.1021/jo061092z

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Citations (16)

Synthesis of a new phospholipase A2inhibitor of an aldehyde terpenoid and its possible inhibitory mechanism

Tetrahedron Letters (1998)

Katsunori Tanaka Mitsunobu Kamatani Hajime Mori Shinobu Fujii Kiyoshi Ikeda

10.1016/s0040-4039(97)10805-x

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Citations (39)

Excited state properties of a short π-electron conjugated peridinin analogue

Chemical Physics Letters (2014)

Nikki Cecil M. Magdaong Dariusz M. Niedzwiedzki Jordan A. Greco Hongbin Liu Koki Yano

Peridinin

Polyene

10.1016/j.cplett.2014.01.002

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Citations (14)

ChemInform Abstract: Efficient Syntheses of Amadori Rearrangement Compounds.

ChemInform (1996)

Tsutomu Iwamoto Tsukasa Kan Shigeo Katsumura Yasufumi Ohfune

Amadori rearrangement

10.1002/chin.199625208

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Citations (0)

Highly Efficient Stereocontrolled Total Synthesis of the Polyfunctional Carotenoid Peridinin

Angewandte Chemie (2002)

Noriyuki Furuichi Hirokazu Hara Takashi Osaki Hajime Mori Shigeo Katsumura

Die konvergente, hoch stereoselektive Totalsynthese des Nor-Carotinoids Peridinin 1 beruhte auf folgenden Schlüsselschritten: a) asymmetrische Sharpless-Epoxidierung, b) Reaktion mit einem Silylfuran-Wittig-Reagens und Oxidation mit 1O2, c) Pd-katalysiertes Dreistufen-Eintopfverfahren für die Herstellung des Yliden-Butenolid-Segments und d) modifizierte Julia-Olefinierung. Supporting information for this article is available on the WWW under http://www.angewandte.com or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.

Peridinin

Wittig reaction

10.1002/1521-3757(20020315)114:6<1065::aid-ange1065>3.0.co;2-9

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Citations (23)

A novel strategy for the synthesis of 2-arylpyridines using one-pot 6π-azaelectrocyclization

Tetrahedron Letters (2008)

Toyoharu Kobayashi Sho Hatano Hiroshi Tsuchikawa Shigeo Katsumura

Generality

Sulfonamide

Base (topology)

10.1016/j.tetlet.2008.05.048

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Citations (30)

Synthesis of Sphingomyelin Carbon Analogues as Sphingomyelinase Inhibitors

The Journal of Organic Chemistry (2002)

Toshikazu Hakogi Yoshiko Monden Misako Taichi Seiji Iwama Shinobu Fujii

The highly efficient and stereocontrolled syntheses of sphingomyelin carbon analogues 1 and 2 were achieved by effectively utilizing Hofmann rearrangement of enantiomerically pure β-hydroxyamide 7, which was prepared by an asymmetric hydrogenation of α-acyl-γ-butyrolactone 9 and ring opening with NH3. Intermediary isocyanate 6 was selectively trapped with the vicinal hydroxy group in an intramolecular fashion to produce an oxazolidinone derivative, 5. In the synthesis of a quite polar compound such as 1, a convenient one-pot procedure of the introduction of a benzyloxycarbonyl group into the hydroxy group resulting from the oxazolidinone ring opening is another key point, because, in addition to the efficiency, this protecting group was easily removable by a simple procedure and workup at the final step. Both synthesized compounds 1 and 2 showed moderate inhibitory activity toward sphingomyelinase from B. cereus.

Derivative (finance)

10.1021/jo025529o

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Citations (40)

ChemInform Abstract: New Type of Azacyclization: Thermal Preparation of 4,6‐Disubstituted 2‐Piperidinone from N‐Sulfonyldienamide and Its Substituent Effect.

ChemInform (2012)

Yuya Maekawa Taku Sakaguchi Hiroshi Tsuchikawa Shigeo Katsumura

Abstract A new thermal cyclization of sulfonamides (I) or (III) proceeds through a 6π‐azaelectrocyclization to yield 4,6‐disubstituted 2‐piperidinones as core structures of alkaloid skeletons.

10.1002/chin.201223149

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Citations (0)

Total Synthesis of (−)-Hippodamine by Stereocontrolled Construction of Azaphenalene Skeleton Based on Extended One-Pot Asymmetric Azaelectrocyclization

Organic Letters (2013)

Shintaro Fujita Taku Sakaguchi Toyoharu Kobayashi Hiroshi Tsuchikawa Shigeo Katsumura

The first asymmetric total synthesis of (−)-hippodamine has been accomplished via the concise construction of its azaphenalene core, which is featured by the 2,4,6-chiral piperidine synthesis based on one-pot asymmetric azaelectrocyclization in the partially activated substituent system and the subsequent intramolecular Mannich reaction.

Piperidine

Mannich reaction

Skeleton (computer programming)

10.1021/ol4010917

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Citations (22)