5-(1-Methyl-2,5-dioxo-cyclopentyl)-2-trimethylsilanyl-pentanoic acid (1R,2S,5R)-5-methyl-2-(1-methyl-1-phenyl-ethyl)-cyclohexyl ester 在
molecular sieve 、
四丁基氟化铵 、
氯化铵 作用下,
生成 (3aS,4S,7aS)-3a-Hydroxy-7a-methyl-1-oxo-octahydro-indene-4-carboxylic acid (1R,2S,5R)-5-methyl-2-(1-methyl-1-phenyl-ethyl)-cyclohexyl ester 、 (3aR,4R,7aR)-3a-Hydroxy-7a-methyl-1-oxo-octahydro-indene-4-carboxylic acid (1R,2S,5R)-5-methyl-2-(1-methyl-1-phenyl-ethyl)-cyclohexyl ester