(E)-(1S,2R,3S,5S,11S,13R,14S)-5,9,14-Trimethyl-4,12-dioxa-tricyclo[9.3.0.03,5]tetradec-8-ene-2,13-diol 生成 (2,2,2-Trichloro-acetyl)-carbamic acid (E)-(1R,2R,3S,5S,11S,13S,14S)-5,9,14-trimethyl-13-(2,2,2-trichloro-acetylcarbamoyloxy)-4,12-dioxa-tricyclo[9.3.0.0
3,5]tetradec-8-en-2-yl ester