cis-(-)-2,3,4a,5,6,10b-Hexahydro-1H-naphth<2,1-b><1,4>oxazine 、
cis-(-)-2,3,4a,5,6,10b-Hexahydro-1H-naphth<2,1-b><1,4>oxazine 生成 (4aS,10bR)-2,3,4a,5,6,10b-hexahydro-1H-benzo[f][1,4]benzoxazine;2-[(4R,5S)-5-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-1,3-dioxolan-4-yl]-2-oxoacetic acid