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

方法以素为起始原料,经水解、乙酰、环碳酸酯、氧、脱碳酸酯、酰、环氨基甲酸酯和环合等反应合成目标合物。

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

以酵母为原料,经菠萝蛋白酶酶解、分离、纯、干燥等工序制得酵母活性肽。