Two-step enzymatic modification of solid-supported bergenin in aqueous and organic media
作者:Umar Akbar、Dong-Sik Shin、Elizabeth Schneider、Jonathan S. Dordick、Douglas S. Clark
DOI:10.1016/j.tetlet.2009.12.119
日期:2010.2
carslberg (SC) extracted into the organic solvent via ion-pairing. Enzymatic cleavage of 7-bromo-4-butyrylbergenin from carboxy-CPG (9.6% final yield) was accomplished using lipase B (LipB) in an aqueous/organic mixture (90/10 v/v of water/acetonitrile), demonstrating the feasibility of solid-phase biocatalysis of a natural product in aqueous and non-aqueous media.
天然黄酮类白菜素以 95% 的产率直接固定在羧酸官能化的可控孔玻璃(羧基-CPG)上。固定化的 bergenin 在水溶液中通过氯过氧化物酶溴化,然后在二异丙醚中通过通过离子对萃取到有机溶剂中的枯草杆菌蛋白酶 (SC) 与丁酸乙烯酯进行酯交换。使用脂肪酶 B (LipB) 在水性/有机混合物(90/10 v/v 的水/乙腈)中从羧基-CPG 酶促裂解 7-溴-4-丁酰伯根素(最终产率为 9.6%),证明了可行性在水性和非水性介质中对天然产物进行固相生物催化。