Schey, Recueil des Travaux Chimiques des Pays-Bas, 1897, vol. 16, p. 357
作者:Schey
DOI:——
日期:——
Methods of preparing polymers having terminal amine groups
申请人:Zhao Hong
公开号:US20070049725A1
公开(公告)日:2007-03-01
The present invention is directed to methods of preparing linear polymers such as polyalkylene oxides containing a terminal amine in high purity. One preferred method includes reacting a polyalkylene oxide such as polyethylene glycol containing a terminal azide with a phosphine-based reducing agent such as triphenylphosphine or an alkali metal borohydride reducing agent such as sodium borohydride in a solvent to reflux. The resultant polymer-amines are of sufficient purity so that expensive and time consuming purification steps required for pharmaceutical grade polymers are avoided.
RECOMBINANT HOST FOR PRODUCING L-ASPARAGINASE II
申请人:Filpula Ray David
公开号:US20080063632A1
公开(公告)日:2008-03-13
The invention provides a recombinant
Escherichia coli
host cell for producing an
Escherichia coli
-asparaginase II enzyme. The host cell includes an
Escherichia coli
chromosome and at least one copy of a recombinant extrachromosomal vector, wherein the recombinant extrachromosomal vector encodes the L-asparaginase II enzyme, wherein the host cell chromosome also encodes the same L-asparaginase II enzyme, and wherein the host chromosome does not encode any other isoform of L-asparaginase II.
Polymer-Linked Pseudomonas Exotoxin Immunotoxin
申请人:Filpula David Ray
公开号:US20080125363A1
公开(公告)日:2008-05-29
The present invention relates to polymer conjugates of SS1P, and methods of making using the same.
RELEASABLE POLYMERIC CONJUGATES BASED ON ALIPHATIC BIODEGRADABLE LINKERS
申请人:ZHAO Hong
公开号:US20080305070A1
公开(公告)日:2008-12-11
Activated polymeric bicine derivatives such as,
as well as conjugates made therewith are disclosed. Methods of making and using the bicine derivatives are also disclosed.