pristimerin 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
1,4-二氧六环 为溶剂,
生成
(2R,4aR,6bR,12bS,14aS)-6b,10,11-Trihydroxy-2,4a,6,9,12b,14a-hexamethyl-1,2,3,4,4a,5,6b,12b,13,14,14a,14b-dodecahydro-picene-2-carboxylic acid methyl ester 、 netzahualcoyene 、 methyl (2R,4aS,6aR,6aS,14aS)-11-[[(4S,6aS,6bS,8aS,11R,14aR)-11-methoxycarbonyl-4,6a,6b,8a,11,14a-hexamethyl-2,3-dioxo-7,8,9,10,12,12a,13,14-octahydropicen-4-yl]oxy]-10-hydroxy-2,4a,6a,6a,9,14a-hexamethyl-8-oxo-1,3,4,5,6,13,14,14b-octahydropicene-2-carboxylate 、 methyl (2R,4aS,6aR,6aS,14aS)-11-[[(4R,6aS,6bS,8aS,11R,14aR)-11-methoxycarbonyl-4,6a,6b,8a,11,14a-hexamethyl-2,3-dioxo-7,8,9,10,12,12a,13,14-octahydropicen-4-yl]oxy]-10-hydroxy-2,4a,6a,6a,9,14a-hexamethyl-8-oxo-1,3,4,5,6,13,14,14b-octahydropicene-2-carboxylate