(R)-2,2-二甲基-1,3-二氧戊环-4-乙腈

钙二[(2R)-[(4S)-2,2-二甲基-1,3-二氧戊环-4-基](羟基)乙酸酯]

5-(2-hydroxyethylidene)-3,4-dimethoxyfuran-2-one

tert-butyl (S)-2-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)aziridine-1-carboxylate