- CHEMICAL COMPOUNDS FOR COATING OF NANOSTRUCTURES
-
The present application relates to a chemical compound comprising an aromatic core, or a carbocyclic, non-aromatic, core, wherein the aromatic core is a benzene ring or a biphenyl; the carbocyclic, non-aromatic core is a 5 to 7 membered ring. The core has
- -
-
-
- Preparation method for health product resveratrol
-
The invention provides a preparation method for a health product resveratrol. According to the invention, 1, a deprotection method used in the invention is green, environment-friendly and pollution-free, the preparation method is almost free of production of waste gas, waste water and industrial residues, and the product 1,4-pentadiene has economic value; 2, a catalyst used in the invention has good cycle repeatability and can be cyclically used 50 times or more; 3, the preparation method is simple in operation requirements, mild in reaction conditions, good in specificity, simple in post-treatment and purification of the product, and suitable for industrial production; and 4, the resveratrol prepared by using the method is free of impurity and has high purity.
- -
-
Paragraph 0041; 0042
(2017/12/04)
-
- Synthesizing method of piceatannol 3'-O-belta-D-glucopyranoside
-
The invention belongs to the field of synthesizing of compounds, and particularly relates to a synthesizing method of piceatannol 3'-O-belta-D-glucopyranoside. The synthesizing method is characterized in that a compound in a formula VIII is reacted, so as to obtain the piceatannol 3'-O-belta-D-glucopyranoside shown in a formula I, wherein in the formula VIII, R is acetyl, benzyl, allyl or alloc. The synthesizing method has the advantages that the compound of piceatannol 3'-O-belta-D-glucopyranoside is synthesized; the cost of the used reagent is low, and the obtaining is easy; the operation is simple, and the total yield rate is 26%; a simple, efficient and environment-friendly piceatannol 3'-O-belta-D-glucopyranoside synthesizing route is provided, a first path is opened for the chemical synthesizing of the piceatannol 3'-O-belta-D-glucopyranoside, and the important meaning is realized in the field of medicines. The formula I and the formula VIII are shown in the description.
- -
-
-
- High-Boron-Content Porphyrin-Cored Aryl Ether Dendrimers: Controlled Synthesis, Characterization, and Photophysical Properties
-
The synthesis and characterization of a set of poly(aryl ether) dendrimers with tetraphenylporphyrin as the core and 4, 8, 16, or 32 closo-carborane clusters are described. A regioselective hydrosilylation reaction on the allyl-terminated functions with c
- Cabrera-González, Justo,Xochitiotzi-Flores, Elba,Vi?as, Clara,Teixidor, Francesc,García-Ortega, Héctor,Farfán, Norberto,Santillan, Rosa,Parella, Teodor,Nú?ez, Rosario
-
p. 5021 - 5031
(2015/05/27)
-
- Fabrication of self-assembled dendron monolayers
-
A dendron (2) comprising a focal point (4) and a plurality of fluorinated end groups (9) is disclosed, including one having a thiol, a silane, a carboxylic acid, a phosphonate or another moiety at the focal point suitable for chemisorption to a substrate
- -
-
Page/Page column 7-10
(2009/05/29)
-
- Synthesis of supercritical carbon dioxide soluble perfluorinated dendrons for surface modification
-
(Chemical Equation Presented) The rational design, synthesis, and characterization of a series of novel perfluorinated dendrons 14a,b, 25a,b, 26a,b, and 18 are described. The dendrimers were designed to have a thiol at the focal point for attachment to a gold surface to enable the fabrication of self-assembled monolayers (SAMs). Perfluorinated tails were attached to the periphery to provide solubility in supercritical carbon dioxide, and to increase the hydrophobicity and the stability of self-assembled monolayers formed. Mitsunobu reactions were utilized to provide high-yielding steps allowing large-scale production of the novel dendrimers.
- Luscombe, Christine K.,Proemmel, Steffen,Huck, Wilhelm T. S.,Holmes, Andrew B.,Fukushima, Hitoshi
-
p. 5505 - 5513
(2008/02/09)
-
- Helical porous protein mimics self-assembled from amphiphilic dendritic dipeptides
-
This manuscript reports the synthesis and the self-assembly of (4-3,4,5-3,5)nG2-CH2-Boc-L-Tyr-L-Ala-OMe dendritic dipeptides (n = 12, 16). These dendritic dipeptides self-assemble both in solution and in solid states into helical por
- Percec, Virgil,Dulcey, Andres,Peterca, Mihai,Ilies, Monica,Miura, Yoshiko,Edlund, Ulrica,Heiney, Paul A.
-
p. 472 - 482
(2007/10/03)
-
- Cross-linking dendrimers with allyl ether end-groups using the ring-closing metathesis reaction
-
A third generation Frechet-type dendrimer containing 24 allyl ether end-groups was synthesized, cross-linked using the ring-closing metathesis (RCM) reaction, and the core was removed hydrolytically without significant fragmentation. The results are analo
- Elmer, Stephanie L.,Zimmerman, Steven C.
-
p. 7363 - 7366
(2007/10/03)
-
- Hydrozirconation of first-generation allyl-functionalized dendrimers and dendrimer model compounds
-
Several allyl-functionalized dendrimers and mono-functional model compounds have been prepared. These have been hydrozirconated using [Cp2ZrHCl]x to give zirconocene terminated dendrimers. These dendrimers have been characterized usi
- Meijboom, Reinout,Moss, John R.,Hutton, Alan T.,Makaluza, Tracy-Ann,Mapolie, Selwyn F.,Waggie, Fazlin,Domingo, Mark R.
-
p. 1876 - 1881
(2007/10/03)
-
- Contrast media
-
The invention provides low viscosity iodinated aryl compounds, useful as X-ray contrast agents of formula I wherein n is 0 or 1, and where n is 1 each C6R5moiety may be the same or different; X denotes a bond or a group providing a 1
- -
-
-
- Iodinated x-ray contrast media
-
The invention provides low viscosity iodinated aryl compounds, useful as X-ray contrast agents, of formula C6R6wherein three non-adjacent R groups are iodine and the remaining R groups are non-ionic, hydrophilic moieties, said compou
- -
-
-
- Rapid synthesis of dendrimers based on calix[4]resorcinarenes
-
Calix[4]resorcinarenes are phenolic macrocyclic compounds, and readily available from resorcinols and aldehydes. We were interested in calix[4]resorcinarenes as highly functionalized core molecules for the rapid synthesis of dendrimers because of their ea
- Yamakawa, Yoshitaka,Ueda, Mitsuru,Nagahata, Ritsuko,Takeuchi, Kazuhiko,Asai, Michihiko
-
p. 4135 - 4139
(2007/10/03)
-
- Synthesis of the Adrenergic Bronchodilators (R)-Terbutalinel and (R)-Salbutamol from (R)-Cyanohydrins
-
Stereoselective syntheses of (R)-terbutaline and (R)-salbutamol acetal, which are important bronchodilators, starting from O-protected (R)-cyanohydrins are described. (R)-Terbutaline hydrochloride (R)-9·HCl is obtained in an overall yield of 44% with >98% ee from the O-bisallyl-protected cyanohydrin (R)-4k via a Ritter N-tertiary butylation to the amide (R)-6a, hydrogenation to the amino alcohol (R)-7a, and deprotection of the hydroxyl functions. (R)-Salbutamol acetals (R)-7b,c can be obtained from the corresponding O-protected (R)-cyanohydrins either via the route described for (R)-terbutaline or via selective hydrogenation of the protected cyanohydrin (R)-11 to the imino derivative, transimination with tert-butylamine, followed by hydrogenation with NaBH4 to give the 2-amino alcohol derivative (R)-12. Desilylation of (A)-12 to (R)-7c is performed with LiAlH4. Hydrolytic cleavage of the acetals (A)-7b and c to (R)-salbutamol was not yet possible without racemization.
- Effenberger, Franz,Jaeger, Juergen
-
p. 3867 - 3873
(2007/10/03)
-