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,经水解、乙酰化、环碳酸酯化、氧化、脱碳酸酯化、酰化、环氨基甲酸酯化和环合等反应合成目标化合物。

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,经菠萝蛋白酶酶解、分离、纯化、干燥等工序制得啤酒废酵母活性肽。