(1R,2S,6S)-2-Hydroxy-6-methyl-7-oxa-bicyclo[4.1.0]hept-3-ene-1-carboxylic acid (1S,2S,5S,6S,8R)-9-hydroxy-5-((E)-(S)-1-hydroxy-2-methyl-hex-2-enyl)-2-methyl-4-oxo-3,10-dioxa-tricyclo[6.2.1.0
2,6]undec-(7Z)-ylidenemethyl ester 、
甲醇 在
potassium carbonate 作用下,
以
甲醇 、
水 为溶剂,
以2.6 mg的产率得到(1R,2S,6S)-2-Hydroxy-6-methyl-7-oxa-bicyclo[4.1.0]hept-3-ene-1-carboxylic acid methyl ester