2-acetamido-6-methyl-8β-acetoxy-9β-acetyl-3,4,5,8,9,10β-hexahydroquinazolin-4-one
(E)-1-acetoxy-3-methyl-1,3-butadiene
2-acetamido-6-acetyl-4(1H)-pyrimidinone
acetic anhydride
2-acetamido-6α-methyl-6β,7β-dihydroxy-8β-acetoxy-9β-acetyl-3,4,5,6,7,8,9,10β-octahydroquinazolin-4-one