Oligomers of cholesterol vinyl ether with methyl vinyl sulfide were synthesized in up to 81% yield (Mn up to 5700) by cationic copolymerization of the indicated monomers in the presence of BF3 ‧ OEt2. The oligomers demonstrate optical activity exceeding that of cholesterol vinyl ether homopolymer.

中文翻译：

---

胆固醇乙烯基醚与甲基乙烯基硫化物的阳离子共聚：迈向新的生物活性低聚物

在 BF3 ‧ OEt2 存在下，通过指定单体的阳离子共聚，合成了胆固醇乙烯基醚与甲基乙烯基硫醚的低聚物，产率高达 81%（Mn 高达 5700）。低聚物显示出超过胆固醇乙烯基醚均聚物的光学活性。