Tetrahedron p. 11693 - 11702 (1995)
Update date:2022-08-04
Topics:
Tanaka, Masahide
Ohshima, Toshihiro
Mitsuhashi, Hiroshi
Maruno, Masao
Wakamatsu, Takeshi
The total syntheses of wuweizisu C (4), gomisin J (6), gomisin N (7), and γ-schizandrin (8) having natural configuration were accomplished in a stereoselective manner.The catalytic hydrogenation or the metal mediated 1,4-reduction of the tetracyclic lactones (12, 17, 22, 30) played the significant role for the stereoselective introduction of C6, C7 dimethyl moiety.Furthermore, the neighboring carbonyl group assisted regioselective demethylation of 5 was essential for the synthesis of 6.
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