- Total synthesis of d-fagomine and 6-deoxyfagomine
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Total synthesis of d-fagomine and 6-deoxyfagomine from readily available d-lyxose is described. The key steps included regioselective and diastereoselective amination, hydroboration-oxidation, and Appel reaction. The reaction of 3,4-anti-tribenzyl ether with chlorosulfonyl isocyanate in toluene at 0 °C afforded 3,4-anti-amino alcohol, an essential compound for the preparation of d-fagomine and 6-deoxyfagomine, with a high diastereoselectivity (dr=26:1) in 74% yield. The origin of diastereoselectivity can be explained by the neighboring group effect, which leads to retention of the stereochemistry.
- Min, Im Sook,Kim, Seung In,Hong, Seungmin,Kim, In Su,Jung, Young Hoon
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p. 3901 - 3906
(2013/06/27)
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