Tetrahedron Letters p. 4855 - 4858 (1991)
Update date:2022-08-03
Topics:
Smith, Amos B.
Duan, James J.-W.
Hull, Kenneth G.
Salvatore, Brian A.
A convergent, stereocontrolled synthesis of the spiroketal fragment of calyculins A-H has been achieved.Key transformations include the novel iodine monobromide-induced iodocarbonate cyclization of (+)-19, efficient coupling of epoxide (+)-14 with the ste
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