Convergent assembly of the spiroacetal subunit of didemnaketal B |
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| Authors: | Fuwa Haruhiko Noji Sayaka Sasaki Makoto |
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| Affiliation: | Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan. hfuwa@bios.tohoku.ac.jp |
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| Abstract: | A highly convergent synthesis of the C9-C28 spiroacetal subunit of didemnaketal B has been accomplished. Assembly of the C9-C15 alkylborate and C16-C21 enol phosphate by means of Suzuki-Miyaura coupling and acid-catalyzed cyclization of the derived dihydroxy enol ether enabled a rapid and efficient construction of the spiroacetal subunit. The C22-C28 side chain was incorporated via Nozaki-Hiyama-Kishi coupling to complete the synthesis. |
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