(R)-γ-Phenylselenomethyl-γ-butyrolactone

R-(-)-二氢-5-(P-甲苯基磺酰丁氧基甲基)-2(3H)-呋喃酮

(R)-(-)-5-氧代-2-四氢呋喃羧酸

谷氨酸

methyl[2R,5S(S)]-5-[(4-acetoxy-1-oxopentyl)oxy]-2-ethyl-2-methylhexanoate