propyl 4-(1-(benzyloxy)propyl)-5-methyl-6-oxo-1,6-dihydropyridine-2-carboxylate

2,3-dihydro-6-methyl-7-[1-(phenylmethoxy)-propyl]-1,5-indolizinedione-2-carboxylic acid 1,1-dimethylethyl ester

(+/-) O-benzylmappicine

trans-Δ19,20-20-O-acetylmappicine