Organic Chemistry Practice Problems Dihedral Angle Practice Problems Solution: A biosynthetic pathway was recently proposed for t...

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Solution: A biosynthetic pathway was recently proposed for the polycyclic, cytotoxic compound aspernomine, isolated from the fungus Aspergillus nomius (J. Am. Chem. Soc. 2012, 134, 8078–8081): (b) What is the approximate dihedral angle between the two methyl  groups directly bound to the chairs?

Problem

A biosynthetic pathway was recently proposed for the polycyclic, cytotoxic compound aspernomine, isolated from the fungus Aspergillus nomius (J. Am. Chem. Soc. 2012, 134, 8078–8081):

(b) What is the approximate dihedral angle between the two methyl  groups directly bound to the chairs?