Acetic acid (E)-(3R,4R,10S,12S)-12-hydroxy-10-isopropyl-7-methylene-1-oxa-spiro[2.9]dodec-8-en-4-yl ester 在
三氯化铝 作用下,
以
乙醚 为溶剂,
以26%的产率得到Acetic acid (1R,2S,4S,5R,6R,10S)-2-hydroxy-4-isopropyl-7-methylene-12-oxa-tricyclo[4.4.2.0
1,5]dodec-10-yl ester