甲醇 、
1-(2,2-二甲基-1,3-恶唑-3-基)乙酮 、 Phenylglyoxylsaeure-((1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)-1-cyclohexyl)ester 在
对甲苯磺酸 作用下,
生成 2-(3-Acetyl-5-methoxy-2,2-dimethyl-4-oxazolidinyl)-2-hydroxy-2-phenylessigsaeure-<(1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)cyclohexyl>ester 、
2-(3-Acetyl-5-methoxy-2,2-dimethyl-4-oxazolidinyl)-2-hydroxy-2-phenylessigsaeure-<(1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)cyclohexyl>ester 、 2-(3-Acetyl-4-methoxy-2,2-dimethyl-5-oxazolidinyl)-2-hydroxy-2-phenylessigsaeure-<(1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)cyclohexyl>ester 、
2-(3-Acetyl-4-methoxy-2,2-dimethyl-5-oxazolidinyl)-2-hydroxy-2-phenylessigsaeure-<(1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)cyclohexyl>ester