Stereocontrolled formal synthesis of (+/-)-platensimycin |
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| Authors: | Matsuo Jun-ichi Takeuchi Kosuke Ishibashi Hiroyuki |
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| Institution: | Division of Pharmaceutical Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan. jimatsuo@p.kanazawa-u.ac.jp |
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| Abstract: | The caged structure of platensimycin, known as Nicolaou's key intermediate for total synthesis of platensimycin, was synthesized stereoselectively by using the following key steps: (i) diastereoselective Diels-Alder reaction between gamma-benzoyloxy enone and tert-butyldimethylsiloxydiene, (ii) formation of a dihydropyran ring by intramolecular catalytic oxypalladation, and (iii) transannular radical cyclization of monothioacetal with tributyltin hydride and AIBN. |
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