per-O-benzoyl-α-D-mannopyranosyl bromide

苯甲酸钠

1,5-anhydro-3,6-di-O-benzoyl-2-deoxy-4-O-mesyl-D-arabino-hex-1-enitol

3,6-二-O-苯甲酰-D-葡萄烯糖

苯甲酰氯