Method The target compound was synthesized from clarithromycin via hydrolyzation,acetylation,cyclic carbonatation,oxidation,decarbonatation,acylation,cyclic carbamatation and cyclization.

方法以克拉霉素为起始原料,、乙酰、环碳酸酯、氧、脱碳酸酯、酰、环氨基甲酸酯和环等反目标物。

Waste beer yeast polypeptides were made from waste beer yeast by bromidic hydrolyzation, separation, purification and dryness etc.

以啤酒废酵母为原料,菠萝蛋白酶酶、分离、纯、干燥等工序制得啤酒废酵母活性肽。