8a-Methyl-5,6,8,8a,9,10-hexa-hydro-10,12a-epoxy-isoindolo[1,2-a] isoquinolinium iodide-Alder reaction of methallyl chloride with 3,4-dihydro-1-furylisoquinoline. The cation comprises a fused
penta-cyclic Investigation of Chaga Melanin. II. Composition of Hydrocarbon Fraction and iso-branched structures in addition to pristane, phytane, steranes, and
terpanes were identified.
Methyl (9aR*,10S*,11R*,13aS*,13bS*)-9-oxo-6, 7,9,9a,10,11-hexahydro-5H,13bH-11,13a-epoxypyrrolo-[2′,1′:3,4][1,4] diazepino[2,1-a]isoindole-10-carboxylate-Alder reaction between maleic anhydride and 1-(2-fur-yl)-2,3,4,5-
tetra-hydro-1H-pyrrolo-[1,2-a] [1,4]diazepine