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Search for "controllable" in Full Text gives 60 result(s) in Beilstein Journal of Organic Chemistry.
Hexacoordinate Ru-based olefin metathesis catalysts with pH-responsive N-heterocyclic carbene (NHC) and N-donor ligands for ROMP reactions in non-aqueous, aqueous and emulsion conditions
Beilstein J. Org. Chem. 2015, 11, 1960–1972, doi:10.3762/bjoc.11.212
- particles is somewhat controllable. It should be noted that DCPD contains two reactive double bonds in the monomer structure. When both undergo metathesis in a ROMP reaction, particularly at elevated temperatures, then the PDCPD material is crosslinked [70]. With respect to the latexes synthesized in this
Regulation of integrin and growth factor signaling in biomaterials for osteodifferentiation
Beilstein J. Org. Chem. 2015, 11, 773–783, doi:10.3762/bjoc.11.87
- the advantage of controlled and sustained influence on cell behavior [82][83], however, the orientation of many growth factors in single molecule level is not well controllable, which decreases the activity of the immobilized factors. In addition, immobilizing osteoinductive proteins on preferably
Multivalent dendritic polyglycerolamine with arginine and histidine end groups for efficient siRNA transfection
Beilstein J. Org. Chem. 2015, 11, 763–772, doi:10.3762/bjoc.11.86
- with low dispersity. Moreover, the tree-like structure of such polymers provides multivalent positions for functionalization and interaction with DNA/siRNA. Dendritic polyglycerol (dPG) can be synthesized on a kilogram scale by a one-step, ring-opening polymerization of glycidol with controllable sizes
Selective methylation of kaempferol via benzylation and deacetylation of kaempferol acetates
Beilstein J. Org. Chem. 2015, 11, 288–293, doi:10.3762/bjoc.11.33
- /bjoc.11.33 Abstract A strategy for selective mono-, di- and tri-O-methylation of kaempferol, predominantly on the basis of selective benzylation and controllable deacetylation of kaempferol acetates, was developed. From the selective deacetylation and benzylation of kaempferol tetraacetate (1), 3,4′,5
- ,-tri-O-acetylkaempferol (2) and 7-O-benzyl-3,4′5,-tri-O-acetylkaempferol (8) were obtained, respectively. By controllable deacetylation and followed selective or direct methylation of these two intermediates, eight O-methylated kaempferols were prepared with 51–77% total yields from kaempferol
- or controllable hydrolysis of kaempferol tetraacetate (1) intending to get the specific hydroxy group free for methylation. The solubility of acetylated kaempferols is improved, and the conditions for the methylation possess more possibilities. As a part of our ongoing work on the synthesis and
Superstructures with cyclodextrins: Chemistry and applications II
Beilstein J. Org. Chem. 2015, 11, 271–272, doi:10.3762/bjoc.11.30
- polyrotaxanes [5][6][7]. The solubility and stability of CD complexes are controllable through the derivatization of CDs. Remarkable progress has been achieved over the past 10 years regarding the regioselective derivatization of cyclodextrins. Synthetic procedures for CD key derivatives such as mono-6-O-tosyl
Release of β-galactosidase from poloxamine/α-cyclodextrin hydrogels
Beilstein J. Org. Chem. 2014, 10, 3127–3135, doi:10.3762/bjoc.10.330
- absorbing considerable amounts of water, and are suitable for a variety of pharmaceutical and biomedical applications, such as drug delivery and tissue engineering. In particular, hydrogels are excellent vehicles for proteins due to their high water content, good compatibility, and controllable release
Biosynthesis of rare hexoses using microorganisms and related enzymes
Beilstein J. Org. Chem. 2013, 9, 2434–2445, doi:10.3762/bjoc.9.281
- has the advantages of using cheaper catalysts without purification and the avoidance of cofactor recycling in vitro, while enzymatic conversion is more controllable and scalable. In addition, immobilized enzymes offer advantages over free and soluble enzymes in many aspects: 1) immobilized enzymes can
C–H Functionalization
Beilstein J. Org. Chem. 2012, 8, 1552–1553, doi:10.3762/bjoc.8.176
- in these types of reactions. The fundamental principles of a number of C–H functionalization transformations have been established but, in many regards, the field is still in its infancy. The ultimate goal would be to have generally programmable and controllable methods for the highly selective C–H
Chemo-enzymatic modification of poly-N-acetyllactosamine (LacNAc) oligomers and N,N-diacetyllactosamine (LacDiNAc) based on galactose oxidase treatment
Beilstein J. Org. Chem. 2012, 8, 712–725, doi:10.3762/bjoc.8.80
- of D-galactose is still not yet completely understood and controllable. The main products of the galactose oxidase reaction are the aldehyde, which occurs as a hydrate in aqueous solution, the corresponding galacturonic acid, and an α,β-unsaturated aldehyde as a dehydrated side product [40][41][42
Highly efficient cyclosarin degradation mediated by a β-cyclodextrin derivative containing an oxime-derived substituent
Beilstein J. Org. Chem. 2011, 7, 1543–1554, doi:10.3762/bjoc.7.182
- units, represent one of the most important classes of host systems in supramolecular chemistry [1]. Their easy availability, their ability to include organic nonpolar molecules into the cavity made up by the cyclically arranged glucose units in aqueous solution, their predictable and controllable
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