采用相转移催化法以四丁基氯化铵为催化剂合成了端基含磺胺嘧啶的聚乳酸，将肿瘤导向基团引入了可生物降解药物载体。

Sulfadiazine-polylactide, a tumor targeting drug carrier, was successfully synthesized by the phase transfer catalysis(PTC)with tetrabutyl ammonium chloride hydroxide as catalyst.

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实验结果表明：本体系中相转移催化剂的催化效率是苄基三乙基氯化铵大于四丁基溴化铵和四乙基溴化铵；

The results show that catalytic efficiency of the phase transfer catalyst BETAC is higher than TBAB, and TBAB is nearly as efficient as TEBA.

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实验结果表明：本体系中相转移催化剂的催化效率是苄基三乙基氯化铵大于四丁基溴化铵和四乙基溴化铵；

The results show that catalytic efficiency of the phase transfer catalyst BETAC is higher than TBAB, and TBAB is nearly as efficient as TEBA.

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