R-(-)-benzyl 2-carbamyl-2-methylpent-4-enoate

(1S,2R,5S,8R)-5-allyl-5,8,11,11-tetramethyl-3-oxa-6-azatricyclo[6.2.1.02,7]undec-6-en-4-one

(3S,5aR,6aS,7aS)-3-allyl-5,5a,6,6a,7,7a-hexahydro-3,6,6,7a-tetramethylbicyclo[4.1.0]hept-1(6)eno[3,4-b][1,4]oxazin-2(3H)-one

(3S,6R)-3-allyl-N-1-(tert-butoxycarbonyl)-6-isopropyl-3-methyl-5-phenyl-1,2,3,6-tetrahydro-2-pyrazinone

2-(benzylidene-amino)-propionic acid methyl ester