scheme23

Scheme 23. Organocatalyzed aldol/cyclization reaction of α-keto lactone 43 with α-isothiocyanato imide 46. This figure is used with permission from the American Chemical Society[72].
Scheme 23. Organocatalyzed aldol/cyclization reaction of α-keto lactone 43 with α-isothiocyanato imide 46. This figure is used with permission from the American Chemical Society[72].
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