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公开(公告)号：US5393876A
公开(公告)日：1995-02-28
申请号：US44627
申请日：1993-04-09
CPC分类号： C07H13/04 , C07H15/203
摘要： A polyacyl maltooligosaccharide derivative which is a precursor of a maltooligosaccharide derivative having modified groups at the 6-position or 4- and 6-positions of non-reducing end glucose unit and being effectively used as a substrate for measuring .alpha.-amylase activity, can be produced under mild conditions by crosslinking OH groups in the non-reducing end glucose unit of oligosaccharide with a benzylidene group having an alkoxy group, followed by acylation and treatment with a dilute acid.
摘要翻译： 作为在非还原性末端葡萄糖单元的6位或4位和6位具有改性基团并且有效地用作测定α-淀粉酶活性的底物的具有修饰基团的麦芽低聚糖衍生物的前体的多酰基麦芽低聚糖衍生物可以是 通过将低聚糖的非还原性末端葡萄糖单元中的OH基与具有烷氧基的亚苄基交联，然后进行酰化和用稀酸处理，在温和条件下生产。
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公开(公告)号：US06172171B2
公开(公告)日：2001-01-09
申请号：US09321620
申请日：1999-05-28
申请人： Kazuo Shiraki , Hiroyuki Tsurumoto , Tomomitsu Abe
发明人： Kazuo Shiraki , Hiroyuki Tsurumoto , Tomomitsu Abe
IPC分类号： C07C24500
CPC分类号： C08G77/46
摘要： Macroazo compounds, which comprise a repeating unit composed of a moiety of the formula (a), a (b) and a moiety of the formula (c) wherein X, E, Z and T are independently a lower alkylene group, R1, R2, R3 and R4 are independently a lower alkyl group or a cyano group, R5, R6, R7 and R8 are independently a lower alkyl group or an aryl group, and m and n are independently a positive integer, those moieties being bound with one another through a carboxylic acid ester linkage or a carboxylic acid amido linkage, make it possible, for instance, in a case of using the compound as a polymerization initiator, to produce easily and at high efficiency a block polymer containing both polyorganosiloxane units and polyoxyalkylene units in its molecule.
摘要翻译： 大分子化合物，其包含由式（a），a（b）和式（c）部分组成的重复单元，其中X，E，Z和T独立地为低级亚烷基，R 1，R 2 ，R 3和R 4独立地为低级烷基或氰基，R 5，R 6，R 7和R 8独立地为低级烷基或芳基，m和n分别为正整数，这些部分彼此结合 通过羧酸酯键或羧酸酰胺键，使得例如在使用该化合物作为聚合引发剂的情况下可以容易且高效地制备含有聚有机硅氧烷单元和聚氧化烯单元的嵌段聚合物 其分子。
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