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

1.方法克拉霉始原料,经水解、乙酰、环碳酸酯、氧、脱碳酸酯、酰、环氨基甲酸酯和环等反应成目标。

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

2.啤酒废酵母原料,经菠萝蛋白酶酶解、分离、纯、干燥等工序制得啤酒废酵母活性肽。