Tetrahedron p. 1303 - 1312 (1984)
Update date:2022-08-04
Topics:
Tomioka, Kiyoshi
Ishiguro, Tsuneo
Iitaka, Yoichi
Koga, Kenji
A virtually complete asymmetric control in the synthesis of 2,3-disubstituted butan-4-olide (10) was demonstrated by employing the butenolide (12) as the chiral acceptor for the conjugate 1,4-addition.Highly efficient asymmetric total synthesis of natural (-)- and unnatural (+)-steganacin was accomplished.The absolute stereostructure of natural antitumor steganacin was determined to be 1.
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(1907)
