为加强研究生学术交流活动，推进学术创新，特开通“研究生学术报告预告区”。我校研究生和教师可以在预告区及时发布和了解有关研究生学术报告的信息，届时参加。也可就某学术报告展开专题讨论与交流。
OA was conjugated with LA through esterification reaction. The product (LA-OA) was analysis by 1H NMR, 13C NMR and MS. LA-OA conjugated with mPEG-NHNH2 via hydrazone bond to obtain mPEG-OA. It was analyzed by 1H NMR, IR and UV-vis. The successful synthesis of products was proved indirectly.