Acetylacetoin synthase (AAS) from Bacillus licheniformis has been partially purified and immobilized on a silica support and its activity was tested under batch conditions in the homo-coupling of a set of α-diketones leading to valuable α-hydroxy ketone derivatives displaying a chiral tertiary alcohol functionality at the α-position. Next, the effectiveness of AAS heterogeneous catalysis has been evaluated
地衣芽孢杆菌的
乙酰丙酮化合酶(
AAS)该化合物已部分纯化并固定在
二氧化硅载体上,并在一批α-二酮的均相偶联中分批条件下测试了其活性,从而生成了宝贵的α-羟基酮衍
生物,在α位上显示了手性叔醇官能度。接下来,通过制造相应的填充床微反应器(耐压不锈钢塔),在连续流动条件下评估了
AAS非均相催化的有效性。已经证明,共价固定在
二氧化硅载体上和流动方式协同作用有助于随着时间的流逝保持酶的活性,从而使得所制备的
生物反应器可以长期操作(长达15天)来生产手性靶标。通过umpolung策略。