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(16)制备Gly-Glu(otBu)-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-树脂 (16) Preparation of Gly-Glu(otBu)-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-resin 在步骤(15)的Fmoc-Gly-Glu(otBu)-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-树脂中，加入脱帽试剂10～50℃反应5～30分钟，用真空泵抽干，重新加入脱帽试剂10～50℃反应10～60分钟，抽干，用异丙醇洗涤3次，DMF洗涤3次，重蒸过的DMF洗涤2次，甲醇洗涤2次，用甲醇浸泡0.5～3小 时，抽干，用氮气吹干树脂成很干的颗粒，所得到的树脂为Gly-Glu(otBu)-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-树脂； In step (15) Fmoc-Gly-Glu(otBu)-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val- Add decapping reagent to the resin, react at 10-50°C for 5-30 minutes, drain with a vacuum pump, re-add capping reagent at 10-50°C, react for 10-60 minutes, drain, wash with isopropanol for 3 times, DMF for 3 times , washed twice with DMF and twice with methanol, soaked in methanol for 0.5 to 3 hours, drained, and dried with nitrogen to form very dry particles
