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Monomethyl polyethylene glycol

A demonstration of liquid-phase combinatorial synthesis was recently introduced whereby the highly soluble, but highly crystalline, monomethyl polyethylene glycol (PEG) was employed to allow solution synthesis of a peptide library and solid phase-like purification by a change to a solvent where the PEG was insoluble. The demonstration penta-peptide library yielded the expected anti-P-endorphin binding sequence [65]... [Pg.13]

Ng [2,3] prepared bioerodible copoly(ortho esters) consisting of the Step 2 product with monomethyl polyethylene glycol ether termini and 1,4-cyclohex-anedimethanol and either an a-hydroxy carboxylic acid, (II), or A -methyl-di-ethanol amine (III), for use as bioerodible matrices for the sustained release of biologically active agents. Other dioxalane bioerodible analogues were prepared by Ng [4] in an earlier investigation. [Pg.63]

A number of polyethylene glycols are also available in molecular weight ranges from commercial suppliers. These are made by initiating the polymerization of ethylene oxide by hydroxide ion. The corresponding monomethyl (or monoalkyl ethers) can be made in a similar fashion by initiating the polymerization with an alcohol. The general reaction is shown below in Eq. (7.2). [Pg.313]

An alternative procedure that avoids the use of a very strong base is heating the salt with KOH in polyethylene glycol monomethyl ether. [Pg.1333]

Multi-armed polymers with a cyclotriphosphazene core XI and XII have been synthesized from the reaction of polyethylene glycol monomethyl ethers with acid chlorides of hexakis(3,5-dicarboxyphenoxy) and hexakis(4-carboxyphe-noxy) cyclotriphosphazenes. Their complexes with LiC104 were investigated, and their maximum conductivities are reported in Table 17 [621]. [Pg.210]

Figure 1 shows a plot of yield vs time for the reaction of 4-chloronitrobenzene with potassium cresoxide, catalyzed by Bu NBr, PEGM 5000 (polyethylene glycol monomethyl ether, avg. molecular weight = 5000) or PVP-X (crosslinked polyvinylpyrrolidone). [Pg.39]

PEGMME-350 = polyethylene glycol monomethyl ether, avg. mol. weight 350 ... [Pg.145]

Janda, Bolm and Zhang generated soluble polymer-bound catalysts for the asymmetric dihydroxylation by attaching cinchona alkaloid derivatives to polyethylene glycol monomethyl ether (MeO-PEG) [84—87]. Since these polymeric catalysts like (24) are soluble in many common solvents they are often as effective as their small homogenous counterparts. Janda et al. prepared catalyst (24) in which two dihydroquinidine (DHQD) units were linked together by phthalazine and finally were attached to MeO-PEG via one of the bicyclic ring system moieties (Scheme... [Pg.217]

E. Garcia-Junceda, et al. Biocatalysis and Biotransformation 2000, 38, 271-281. MPEG consists of a polyethylene glycol 5000 monomethyl ester, see J.J. Kre-pinsky. Advances in polymer-supported solution synthesis of oligosaccharides, In Modern Methods in Carbohydrate Synthesis... [Pg.465]

Polyethylene glycols and their monomethyl ethers are inexpensive, thermally stable, recoverable, and nontoxic, and can be used as green solvents for various transformations [82] including Knoevenagel condensations [83-85]. [Pg.2]

Asparaginase, reaction product with succinic anhydride, esters with polyethylene glycol, monomethyl ether [CAS] Monomethoxypolyethylene glycol succinimidyl L-asparaginase [CAS]... [Pg.518]

ROH, pig liver esterase-polyethylene glycol monomethyl ether (R2 = CH=CH2, enantioselective)... [Pg.1971]

MC MDI MEKP MF MMA MPEG MPF NBR NDI NR OPET OPP OSA PA PAEK PAI PAN PB PBAN PBI PBN PBS PBT PC PCD PCT PCTFE PE PEC PEG PEI PEK PEN PES PET PF PFA PI PIBI PMDI PMMA PMP PO PP PPA PPC PPO PPS PPSU Methyl cellulose Methylene diphenylene diisocyanate Methyl ethyl ketone peroxide Melamine formaldehyde Methyl methacrylate Polyethylene glycol monomethyl ether Melamine-phenol-formaldehyde Nitrile butyl rubber Naphthalene diisocyanate Natural rubber Oriented polyethylene terephthalate Oriented polypropylene Olefin-modified styrene-acrylonitrile Polyamide Poly(aryl ether-ketone) Poly(amide-imide) Polyacrylonitrile Polybutylene Poly(butadiene-acrylonitrile) Polybenzimidazole Polybutylene naphthalate Poly(butadiene-styrene) Poly(butylene terephthalate) Polycarbonate Polycarbodiimide Poly(cyclohexylene-dimethylene terephthalate) Polychlorotrifluoroethylene Polyethylene Chlorinated polyethylene Poly(ethylene glycol) Poly(ether-imide) Poly(ether-ketone) Polyethylene naphthalate Polyether sulfone Polyethylene terephthalate Phenol-formaldehyde copolymer Perfluoroalkoxy resin Polyimide Poly(isobutylene), Butyl rubber Polymeric methylene diphenylene diisocyanate Poly(methyl methacrylate) Poly(methylpentene) Polyolefins Polypropylene Polyphthalamide Chlorinated polypropylene Poly(phenylene oxide) Poly(phenylene sulfide) Poly(phenylene sulfone)... [Pg.959]

Shojaei, A.H., and X. Li. 1997. Mechanisms of buccal mucoadhesion of novel copolymers of acrylic acid and polyethylene glycol monomethyl ether monomethacrylate. J Control Release 47 151. [Pg.467]

Fig. 2. Application of the polyethylene glycol-co-monomethyl ether (MPEG) solid support with an a,a -dioxyxylyl (DOX) diether linker for oligosaccharide synthesis in solution. Fig. 2. Application of the polyethylene glycol-co-monomethyl ether (MPEG) solid support with an a,a -dioxyxylyl (DOX) diether linker for oligosaccharide synthesis in solution.
See other pages where Monomethyl polyethylene glycol is mentioned: [Pg.355]    [Pg.1218]    [Pg.103]    [Pg.107]    [Pg.378]    [Pg.21]    [Pg.21]    [Pg.355]    [Pg.1218]    [Pg.103]    [Pg.107]    [Pg.378]    [Pg.21]    [Pg.21]    [Pg.155]    [Pg.155]    [Pg.138]    [Pg.1319]    [Pg.121]    [Pg.192]    [Pg.246]    [Pg.235]    [Pg.751]    [Pg.197]    [Pg.275]    [Pg.1959]    [Pg.410]    [Pg.1360]    [Pg.1319]    [Pg.81]    [Pg.107]    [Pg.580]    [Pg.581]    [Pg.385]    [Pg.15]    [Pg.1959]    [Pg.498]    [Pg.277]    [Pg.412]    [Pg.618]   
See also in sourсe #XX -- [ Pg.355 ]



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