(16α,20R,24S)-2,16,20,25-tetrahydroxy-24-methoxycucurbita-1,5-diene-3,11,22-trione 2-O-β-D-glucopyranoside 在
snailase 、
水 作用下,
反应 12.0h,
以2.2 mg的产率得到(8S,9R,10R,13R,14S,16R,17R)-17-[(2R,5S)-2,6-dihydroxy-5-methoxy-6-methyl-3-oxoheptan-2-yl]-2,16-dihydroxy-4,4,9,13,14-pentamethyl-8,10,12,15,16,17-hexahydro-7H-cyclopenta[a]phenanthrene-3,11-dione