Tetrahedron Letters p. 3755 - 3758 (1997)
Update date:2022-08-04
Topics:
Saito, Takeshi
Suzuki, Takao
Takeuchi, Kazuhiro
Matsumoto, Takashi
Suzuki, Keisuke
In relation to the total synthesis of the furaquinocins, stereoselective methylenation of chiral aldehyde 5 is described. The diastereoselectivity of epoxides 6a/b is high when stabilized sulfur ylides are employed. A double stereo-differentiation phenomenon was observed for the aminosulfoxonium ylide 8: the selectivity with (S)-8 was 30:1, while 5:1 with (R)-8.
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