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林贤福
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-1年11月30日
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林贤福
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-1年11月30日
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林贤福
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-1年11月30日
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林贤福, 吴起, 吕德水, 陈志春, 俞国华
高等学校化学学报,2003,10(24):1806~1810,-0001,():
-1年11月30日
研究了无水吡啶中酶催化棉子糖和丁二酸二乙烯酯、己二酸二乙烯酯、癸二酸二乙烯酯的酯交换反应,高选择性地合成了3种具有不同链长的可聚合的棉子糖乙烯酯。化合物经1HNMR,13CNMR和2DNMR表征,确证主要在棉子糖的β-呋喃果糖残基的C-1位OH上酯化。考察了7种不同来源的酶催化棉子糖酯合成的活性及温度)时间对反应的影响。
棉子糖, 乙烯酯, 酶催化合成, 酯交换反应
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【期刊论文】CHEMOENZYMATIC SYNTHESIS OF BIODEGRADABLE POLY (1'-O-VINYLADIPOYL-SUCROSE)
林贤福, De-shui Lu, Qi Wu and Xian-fu Lin*
Chinese Journal of Polymer Science Vol. 20, No. 6, (2002), 579−584,-0001,():
-1年11月30日
Novel polymer containing sucrose group was synthesized by radical polymerization from an enzymatically prepared monomer, 1'-O-vinyladipoyl-sucrose (VAS). Transesterification reaction of sucrose with divinyladipate in anhydrous pyridine catalyzed by an alkaline protease from Bacillus subtilis at 60℃ for 7 days gave VAS (yield 55%) without any blocking/deblocking steps. The vinyl sucrose ester could be polymerized with potassium persulfate and H2O2 as initiator to give poly(1'-O-vinyladipoyl-sucrose) with Mn=33,000 and Mw=53,200, Mw/Mn=1.61. The polymer was biodegradable. After 6 days in aqueous buffer (PH 7), this alkaline protease could degrade poly(1'-O-vinyladipoyl-sucrose) to Mn of ca. 1080, Mw/Mn=3.30 (37℃), and Mn of ca. 5200, Mw/Mn=2.44 (4℃). The polymer containing sucrose branch would be a functional material in various application fields.
Divinyladipate,, Sucrose,, Alkaline protease,, Polymerization,, Biodegradation
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