O
Osamu Yamabe
Researcher at Tohoku University
Publications - 11
Citations - 116
Osamu Yamabe is an academic researcher from Tohoku University. The author has contributed to research in topics: Enantioselective synthesis & Nucleophilic aromatic substitution. The author has an hindex of 5, co-authored 11 publications receiving 110 citations. Previous affiliations of Osamu Yamabe include Toyohashi University of Technology.
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Journal ArticleDOI
Synthesis, resolution, and absolute stereochemistry of (-)-blestriarene C.
Tetsutaro Hattori,Yuhi Shimazumi,Hitoshi Goto,Osamu Yamabe,Naoya Morohashi,Wataru Kawai,Sotaro Miyano +6 more
TL;DR: It was found that blestriarene C and its 7,7'-diisopropyl ether 2 underwent rapid photoracemization even under ambient light exposure.
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Nucleophilic aromatic substitution on 1-alkoxy-2-nitronaphthalene by 1-naphthyl Grignard reagents for the synthesis of 2-nitro-1,1'-binaphthyls
TL;DR: In this article, the axial chirality into the binaphthyl bond was achieved by using 1-menthoxy-2-nitronaphthalene as the substrate.
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Synthetic study of marine lobane diterpenes: efficient synthesis of (+)-fuscol
TL;DR: In this article, the enantioselective synthesis of (+)-fuscol 4, a representative lobane diterpene, has been achieved in 10 steps and ca. 20% overall yield from (4R,5R)-1-acetoxy-4-isopropenyl-5-methyl-5vinylcyclohex-1-ene 3b, which itself has been prepared as a building block directed toward the asymmetric synthesis of natural products.
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First determination of the absolute stereochemistry of a naturally occurring 1,1′-biphenanthrene, (−)-blestriarene C, and its unexpected photoracemization
TL;DR: A naturally occurring 1,1'-biphenanthrene, blestriarene C, was prepared and its absolute stereochemistry was determined to be Sa-(-) by an empirical method, during which the compound was found to undergo rapid photoracemization even under ambient light exposure.