Chemical and Pharmaceutical Bulletin p. 1977 - 1984 (1995)
Update date:2022-08-03
Topics:
Ara
Takeya
Tobinaga
(±)-Isopodophyllotoxin (1e) and related lactones 12, 13, 14 were synthesized by a biomimetic procedure from the doubly unsaturated esters 11a and 11b by means of an oxidative free radical cycloaddition reaction utilizing a stable cation radical salt, Weitz' aminium salt, in one step. (±)-Isopicropodophyllin (1g), the trans-fused lactones, 12, 13, and 16, and the cis-fused lactone 17 were also synthesized from the esters 11c and 11d by the reaction with the same reagent.
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Doi:10.1055/s-1998-2011
(1998)Doi:10.1002/anie.201205130
(2013)Doi:10.1055/s-1998-2024
(1998)Doi:10.1021/jo9712862
(1998)Doi:10.1016/S0040-4039(98)00152-X
(1998)Doi:10.1055/s-1998-3128
(1998)
