The configuration at the exocyclic double bond of the two stereoisomers of 5'-ethoxycarbonyl-3,4-dihydro-3',4'-dimethyl-5(IH)-2,2'-pyrromethenone has been established by .X-ray analysis
Verrucarin E (4-acetyl-3-hydroxymethylpyrrole) (I), a secondary metabolite of the soil fungus Myrothecium verrucaria, crystallizes in space group PI with a = 8.214 (8)
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