scheme55
![Recent advances in organocatalytic cascade reactions for enantioselective synthesis of chiral spirolactone skeletons](https://image.oaes.cc/81dabbbc-923b-43d2-a26d-fe5689f6999d/5406.scheme.55.jpg)
Scheme 55. Experimental results using phenanthrenequinone 111 as an electrophile. This figure is used with permission from the Royal Society of Chemistry[131].
Scheme 55. Experimental results using phenanthrenequinone 111 as an electrophile. This figure is used with permission from the Royal Society of Chemistry[131].
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