scheme41
![Recent advances in organocatalytic cascade reactions for enantioselective synthesis of chiral spirolactone skeletons](https://image.oaes.cc/81dabbbc-923b-43d2-a26d-fe5689f6999d/5406.scheme.41.jpg)
Scheme 41. Spirolactonization reaction of 3-hydroxyoxindoles 69 and α, β-unsaturated N-acylated succinimides 77. This figure is used with permission from the Royal Society of Chemistry[103].
Scheme 41. Spirolactonization reaction of 3-hydroxyoxindoles 69 and α, β-unsaturated N-acylated succinimides 77. This figure is used with permission from the Royal Society of Chemistry[103].
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