(1S,5R,7R)-10,10-Dimethyl-4-(3-methyl-but-2-enoyl)-3-phenyl-3,4-diaza-tricyclo[5.2.1.01,5]decan-2-one

(1S,5R,7R)-10,10-Dimethyl-3-phenyl-4-[(E)-(3-phenyl-acryloyl)]-3,4-diaza-tricyclo[5.2.1.01,5]decan-2-one

(E)-4-((1S,5R,7R)-10,10-Dimethyl-2-oxo-3-phenyl-3,4-diaza-tricyclo[5.2.1.01,5]dec-4-yl)-4-oxo-but-2-enoic acid ethyl ester

(1S,5R,7R)-10,10-Dimethyl-4-((E)-pent-2-enoyl)-3-phenyl-3,4-diaza-tricyclo[5.2.1.01,5]decan-2-one

(1S,5R,7R)-10,10-Dimethyl-4-((E)-2-methyl-but-2-enoyl)-3-phenyl-3,4-diaza-tricyclo[5.2.1.01,5]decan-2-one