scheme41

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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