(1S,2R,5S,8R)-5-Benzyl-8,11,11-trimethyl-3-oxa-6-aza-tricyclo[6.2.1.02,7]undec-6-en-4-one

3-Benzyl-5H,10bH-oxazolo[3,2-c][1,3]benzoxazine-2(3H),5-dione

D-丙氨酸

N-4-fluorobenzylidene-DL-Ala isopropyl ester

isopropyl 2-[(E)-1-(4-chlorophenyl)methylideneamino]propanoate