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Your search keyword '"Takahashi, Keisuke"' showing total 6 results
Start Over Author "Takahashi, Keisuke" Journal angewandte chemie international edition
6 results on '"Takahashi, Keisuke"'

4. Total Synthesis of Neooxazolomycin

Author

Onyango, Evans Otieno, primary, Tsurumoto, Joji, additional, Imai, Naoko, additional, Takahashi, Keisuke, additional, Ishihara, Jun, additional, and Hatakeyama, Susumi, additional

Published
2007
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6. Total Synthesis of (−)-Ophiodilactone A and (−)-Ophiodilactone B.

Author

Matsubara, Takaaki, Takahashi, Keisuke, Ishihara, Jun, and Hatakeyama, Susumi

Subjects
*INFORMATION asymmetry, *CARBOXYLIC acids, *OPHIUROIDEA, *BIOMIMETIC chemicals, *ORGANIC acids, *LACTONES
Abstract

The first asymmetric total synthesis of (−)-ophiodilactone A and (−)-ophiodilactone B, isolated from the ophiuroid (Ophiocoma scolopendrina), is reported. The key features of the synthesis include the highly stereocontrolled construction of the structurally congested γ-lactone/δ-lactone skeleton through an asymmetric epoxidation, diastereoselective iodolactonization, and intramolecular epoxide-opening with a carboxylic acid, and biomimetic radical cyclization of ophiodilactone A to ophiodilactone B. [ABSTRACT FROM AUTHOR]

Published
2014
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