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. 2021 May 13;19(5):273. doi: 10.3390/md19050273

Scheme 5.

Scheme 5

Strategy for the synthesis of (+)-aureol (1) according to Katoh and colleagues [22,23,24]. (a): Retrosynthetic plan. (b): Synthesis of (+)-aureol (1). HMPA = hexamethylphosphoramide; salcomine = N,N′-bis(salicylidene)ethylenediamino cobalt(II); DMF = N,N′-dimethylformamide.