2231 results about "Solid-phase synthesis" patented technology

Multilayered particulate materials are formed by coating a particulate substrate with a metal and adsorbing an organic layer comprising a recognition moiety onto the metal film. The recognition moiety interacts with an analyte of interest allowing for its detection, purification, etc. Suitable recognition moieties can be selected from a range of species including, small molecules, polymers and biomolecules and the like. The novel particulate materials of the invention can be utilized in an array of methods including, ion-exchange, ion-selective ion-exchange, assays, affinity dialysis, size exclusion dialysis, as supports in solid phase synthesis, combinatorial synthesis and screening of compound libraries and the like.

The present invention features novel compositions, linkers, derivatized solid supports, and methods for the efficient solid phase synthesis of oligonucleotides, including RNA, DNA, RNA-DNA chimeras, and analogs thereof.

PCT No. PCT/US98/02634 Sec. 371 Date Mar. 9, 1999 Sec. 102(e) Date Mar. 9, 1999 PCT Filed Feb. 10, 1998 PCT Pub. No. WO98/34633 PCT Pub. Date Aug. 13, 1998A solid phase peptide synthesis reactor system and method of operating the reactor are provided. The reactor system includes a basket rotatable about an axis within a housing and a receiver which delivers fluid to, and collects fluid from, the housing. The basket has a perforate side wall against which a resin cake for the peptide synthesis is formed. The reactor and receiver form a loop or circuit through which solutions are circulated. The circulation of the solutions prevents the reactor from flooding so that the basket will not be submerged in solution and allows for the use of less liquid. Thus greater amino acid concentrations may be used. The method includes forming a resin cake of uniform depth on the wall of the spinning basket and spraying the solutions against the resin cake while spinning the basket. The solutions will pass through the resin cake and drain to the receiver to be circulated or recycled through the system or discharged from the system. Before a subsequent solution is introduced into the reactor system, the prior solution is purged from the system to help control exposure time of the peptide to the solutions.

The present invention provides a synthesis method of LiB (C2O4)2. It belongs to the field of lithium borate through, and can be used in lithium cell. Said invention adopts solid-phase synthesis method, and includes the following steps: ball-grinding and mixing reaction raw material lithium compound, borno compound and oxalic acid radical compound according to mole ratio of 1:1:2, ball-grinding temperature is 5 deg.C-70 deg.C and ball-grinding time is 1-4 hr., then heating ball-ground raw material to make it produce chemical reaction, its reaction environment is nitrogen gas, argon gas or vacuum environment, its reaction temp. is 80 deg.C-300 deg.C and reaction time is 2-24 hr, so as to obtain LiB(C2O4)2.

The invention provides a method for preparing nano powder of monoclinic phase vanadium dioxide by using a hydrothermal-high temperature solid phase synthesis method. The method comprises the following steps of: a) reacting a vanadium source with a reducing agent to obtain vanadium dioxide (VO2)(B), VO2(A) or VO2 (paramontroseite) by using a hydrothermal method; b) washing the VO2(B), the VO2(A) or the VO2 (paramontroseite) and then thoroughly drying the VO2(B), the VO2(A) or the VO2 (paramontroseite) to form powder; c) vacuum-packaging the powder of the VO2(B), the VO2(A) or the VO2 (paramontroseite) in an airtight and high-temperature resistant container; and d) annealing the container at the temperature of between 350 and 1,200 DEG C for over 3 hours to obtain the nano powder of the monoclinic phase vanadium dioxide. The method has the characteristics of simple production technology, low production cost, environmental friendliness, higher product yield, higher product purity and easy industrial mass production.

The invention relates to a synthesis method of semaglutide. According to the method, a semaglutide product is synthesized by adopting a solid-liquid phase combination method, and three fragments are simultaneously synthesized in a synthesis manner of 16+6+9 fragments, and therefore, the synthesis time of the product is greatly shortened; moreover, by step-by-step analysis on synthesis factors of His-Ala-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly, Gln-Ala-Ala-N6-[N-(17-carboxy-1-oxoheptadecyl-L-gama-glutamyl [2-(2-aminoethoxy) ethoxy] acetyl [2-(2-aminoethoxy) ethoxy] acetyl]-Lys-Glu-Phe, Ile-Ala-Trp-Leu-Val-Arg-Gly-Arg-Gly-OH and the like, the difficulty in synthesis of a peptide sequence in solid-phase synthesis is reduced, the problem of batch amplification in the solid-phase synthesis is solved, and the synthesis efficiency is improved; and as liquid-phase fragment synthesis is adopted, the purification difficulty is effectively reduced, and the production cost is greatly lowered. The synthesis method disclosed by the invention has the advantages that the synthesis time can be shortened by 40%, the cost of materials is lowered, the generation quantities of deletion peptide and hybrid peptide are decreased, and the synthesis method is suitable for industrial large-scale production.

The invention relates to the field of pharmaceutical synthesis and discloses a linaclotide synthesis method. The linaclotide synthesis method includes: performing solid-phase synthesis to obtain linaclotide resin with an N terminal, a Thr side chain, a Cys side chain, an Asn side chain, a Tyr side chain and a Glu side chain of an amino acid sequence shown in SEQ ID NO:1 coupled with protecting groups and with a C terminal coupled with a resin solid-phase carrier, cracking to remove the protecting groups and the resin solid-phase carrier prior to carrying out oxidizing reaction by the aid of a GSH (glutathione)/GSSH (oxidized glutathione) oxidization system to obtain a crude linaclotide product, and purifying the crude linaclotide product so that linaclotide is obtained. By the method, an Mmt protecting group is used for protecting a cysteine side chain, crude linear linaclotide peptide is synthesized by a one-by-one coupling mode, and the linaclotide is obtained by oxidization by the aid of the GSH /GSSH oxidization system. Compared with existing methods, the linaclotide synthesis method has the advantages that purity of the crude linear peptide is improved, the oxidization step can be performed without purification, and purity and yield of the crude linaclotide product are remarkably improved.

The invention discloses a solid-phase synthesis method of Sermaglutide. The method comprises steps of taking 2-Cl-Resin as an initial resin carrier; through a solid-phase synthesis method, orderly connecting the corresponding amino acids in a Sermaglutide sequence, wherein the lysine takes Dde-Lys (Fmoc)-OH as raw material; after linking the side chain raw material, removing Dde protection base of lysine, and performing continuous condensation reaction of a peptide chain; applying specific microwave technology treatment in a reaction process, and obtaining Sermaglutide-2-Cl-Resin; after cutting and settling Sermaglutide-2-Cl-Resin, freezing and drying, and obtaining crude peptide of Sermaglutide peptide. The method applies Fmoc solid-phase synthesis method, 2-Cl-Resin as solid phase carrier, and DIC/HOBt as the condensating agent, thus the lysine raw material is improved, the technical flow is largely simplified; the specific microwave synthetic technique is applied to the condensation reaction, thus the condensation efficiency is improved; the invention largely shortens the reaction time, improves the product yield, and has considerable economic application value and wide application prospect.

The invention discloses a solid phase synthesis method of carbetocin. The technical proposal comprises the following steps of: obtaining Fmoc-Gly-amino resin by reaction of Fmoc-Gly-OH and amino resin with the substitutability being 0.2 mmol/g-0.9 mmol/g; sequentially connecting amino acids with Fmoc protecting groups by the solid phase synthesis method to obtain carbetocin precursor peptide I-amino resin; stripping off cysteine side chain protecting groups to obtain carbetocin precursor peptide II-amino resin; adding organic alkali and lithium chloride in solvent for cyclization to obtain carbetocin-amino resin; cracking to obtain carbetocin crude peptide; and purifying and freeze-drying to obtain the carbetocin. The method adopts the amino resin to synthesize carbetocin by the solid phase cyclization technology. The process is characterized by simple operation, easy post-treatment, high yield, low cost, and the like, and has considerable economical and practical value and broad application prospect.

The invention discloses a solid-phase synthesis method for liraglutide. The solid-phase synthesis method for liraglutide comprises the following steps: 1) firstly synthesizing first to tenth amino acid segments 3, eleventh to nineteenth amino acid segments 2, and twentieth to thirty-first amino acid segments 1, wherein the twentieth lysine adopts Fmoc-Lys(Mtt)-OH, and the first histidine adopts Boc-His(Trt)-OH; 2) synthesizing pal-Glu(OH)-Otbu by adopting a liquid phase synthesis method; 3) selectively removing the Mtt protecting group on the twentieth lysine by use of 5% TFA (Trifluoroacetic Acid), connecting pal-Glu(OH)-Otbu with the side chain of the twentieth lysine to obtain a segment 4; 4) sequentially connecting the segments 2, the segments 3 and the segments 4 to obtain peptide resin completely protected by liraglutide; 5) cracking, purifying, and lyophilizing to obtain the liraglutide product.

This invention relates to methods for preparing cyclic peptides and peptidomimetic compounds in solution and bound to solid supports, and to cyclic peptide or peptidomimetic libraries for use in drug screening programs. In particular, the invention relates to a generic strategy for synthesis of cyclic peptides or peptidomimetics that enables the efficient synthesis under mild conditions of a wide variety of desired compounds. Two approaches were evaluated for their improvements in solution and solid phase synthesis of small cyclic peptides: positioning reversible N-amide substituents in the sequence; and applying native ligation chemistry in an intramolecular sense. Systematic investigation of the effects of preorganising peptides prior to cyclisation by using peptide cyclisation auxiliaries, and developing new linkers and peptide cyclisation auxiliaries to aid cyclic peptide synthesis gives surprising improvements in both yields and purity of products compared to the prior art methods. The combination of these technologies provides a powerful generic approach for the solution and solid phase synthesis of small cyclic peptides. The ring contraction and N-amide substitution technology of the invention provide improved methods for the synthesis of cyclic peptides and peptidomimetics. When used in conjunction with linker strategies, this combination provides solid-phase avenues to cyclic peptides and peptidomimetics.

A process for preparing the composite oxide of Li and transition metals in order to use is as positive electrode of rechargeable Li or Li-ion battery features that the oxides, hydroxides or salts of Li and transition metal (Co, Ni and Mn) are used as raw materials, and the oxide, hydroxide or salt of Co, Ni, Mn, Cr, Al, or Mg is used as doping element, and includes mixing them with fusable salt, heating, constant-temp calcining, cooling, watshing to remove residual salt and baking. Its advantages are high reaction speed, and high specific capacity of product.

The invention discloses a solid-phase synthetic method of a highly ordered mesoporous carbon material. The solid-phase synthetic method comprises the following steps: 1) mixing a structure-directing agent with a high molecular monomer used as a carbon source, and grinding for 5-180 min at 10-100 DEG C; 2), heating for 0.5-120 h at 40-380 DEG C; 3) under the protection of inert gases, rising the temperature to 500-2,100 DEG C at the temperature rising speed of 1-40 DEG C/min, and roasting for 2-10 h at high temperature. The functionalization mesoporous carbon material is synthetized through the organic-organic self-assembly between the high molecular monomer and the structure-directing agent and between the low polymer of the high molecular monomer and the structure-directing agent, and the mechanical grinding. The solid-phase synthetic method is simple to operate, efficient, and low in cost, and the prepared mesoporous carbon material has a highly ordered mesoporous channel, high specific surface area (500-2,500 m<2>/g and large pore volume (pore diameter of 2.5-20 nm and pore volume of 0.1-2.5 cm <3>/g).

The invention provides a method of synthesizing complex mixtures of long polynucleotides by separately synthesizing and assembling shorter component oligonucleotides. In one aspect, pairs of oligonucleotides that form components of such polynucleotides are synthesized on one or more microarrays, or other large-scale parallel solid phase synthesis platforms, after which they are released. Members of each pair contain unique complementary barcode sequences that are used match-up pairs in a hybridization reaction to form duplexes. Such duplexes are then extended with a DNA polymerase and the resulting extension product is amplified to form an amplicon. The amplicon may be either used directly as the desired polynucleotide, or it may undergo further processing, such as capture on solid phase supports and/or additional enzymatic or chemical processing, to produce a desired polynucleotide product, such as a circularizing probe for multiplex analysis of genomic DNA, or the like.

The invention discloses a synthesizing method of anode material of high-pressure solid-phase ferric-lithium phosphate, which comprises the following steps: blending lithium salt, ferric salt and phosphate according to 1:1:1 proportion evenly; grinding the material into ball for 6-24 h to obtain priority; disposing priority for 2-10 h at 200-350 deg.c in the air environment; cooling naturally; grinding to obtain powder material; adding carbon material in the powder material with weight percentage of carbon material at 1-20 percent; grinding again for 6-24 h; disposing for 4-24 h at 450-1000 deg.c in the 1-15 Mpa inert environment; cooling naturally to obtain the product.

The invention relates to a solar battery cuprum-indium-gallium-selenium film key target material and a preparation method thereof. The target material uses cuprum-indium-gallium-selenium element powders as raw material; CIGS powder is prepared by adopting solid phase synthesis and further isostatic compaction; finally a CIGS target material is prepared by high temperature sintering. The target material is used as raw material and a CIGS film can be achieved by further sputtering. In the invention, the four-element component key target material preparation technology is simplified from 'fractional deposition---selenizing optimization'to'one-step deposition', thereby solving the complex technological process of multiple target replacements and repeated depositions and the quality problem caused by late-stage selenylation; the adjustment of the components is carried out by the target material; the late-stage sputtering technology only needs to ensure the quality of film forming, thereby increasing the controllability of the technology.

The invention discloses a full chemical synthetic method for hybridization of a solid phase and a liquid phase of liraglutide. The method comprises the following steps: chemically synthesizing a liraglutide precursor protected by N terminal and a cetyl derivative; de-protecting to remove tail end protection to obtain a target polypeptide. The liraglutide precursor semi-protected is obtained by polypeptide solid-phase synthesis, and the precursor purified to the drug level enters into the next chemical synthesis.

The invention discloses a one-step method based solid-phase polypeptide synthesis method. The technology of blowing in nitrogen or insert gases to volatilize a volatile solvent and reduce the temperature is adopted in each condensation reaction of connected protected amino acids, the nitrogen or the insert gases are filled into a reaction mixture so that the volatile solvent is volatilized and the temperature of a reaction system can be maintained at 15-20 DEG C, after an auxiliary condensing agent is added to start the condensation reaction, the temperature of the condensation reaction system is always stabilized at 22-28 DEG C by a heat insulation device, and during condensation of protected amino acids, the amino acids are unnecessary to be activated at low temperature in an activator and then be transferred to a condensation reactor, thus all the chemical reactions for synthesizing polypeptide are continuously completed in the same reactor in sequence. The method for synthesizing angiotensinamide is environment-friendly and efficient, has low requirements for equipment and can be applied to large-scale industrial production.

The invention relates to the technical field of polypeptide synthesis, and particularly relates to a solid synthetic method of semaglutide. The solid synthetic method includes coupling Gly and a resin to obtain a Gly-resin; coupling step by step for the first time an ammonia acid or an amino acid derivative to obtain a first peptide resin the sequence of which is shown as SEQ ID No.1; removing a side chain protective group of Lys; coupling step by step for a second time 2-(2-(2-aminoethoxy)ethoxy) acetic acid, 2-(2-(2-aminoethoxy)ethoxy) acetic acid, Glu and octadecanedioic acid to obtain a second peptide resin; performing pyrolysis; and purifying. The solid synthetic method is simplified in operation step, short in synthetic period, low in cost, reduced in production of waste liquid, low in side products and high in product yield, and is suitable for large-scale production of the semaglutide.

A catalyst for gas-phase synthesis of dimethyl (or diethyl) oxalate from CO and nitrite is prepared from alpha-Al2O3 as carrier and Ce and Pd as active components through the dipping method. Its advantages are high reaction activity and selectivity, long service life and easy control of reaction.

The invention discloses a preparation method of thymosin alpha1 through solid phase polypeptide synthesis, comprising the steps of: (1) mixing Fmoc-Asn(Trt)-OH with hydroxyl functional resin, and performing esterification to the mixture so as to obtain Fmoc-Asn(Trt)- resin; (2) mixing Fmoc-Asn(Trt)- resin with a deprotection agent, thus obtaining Asn(Trt)- resin; (3) condensing Fmoc-Glu(OtBu)-OH and Asn(Trt)- resin, thus obtaining Fmoc-Glu(OtBu)-Asn(Trt)-resin; (4) according to solid phase synthesis method, repeating Fmoc removal in step (2) and condensation of amino acid and polypeptide on resin in step (3), and condensing amino acid from end C to end N in an order of Glu to Ser with polypeptide on resin, thus forming polypeptide resin as shown in formula II; and (5) separating the polypeptide on the polypeptide resin as shown in formula II and resin, thus obtaining thymosin alpha1 as shown in formula I.

Polymeric brush substrates and methods for their preparation are provided. Methods are also provided for preparing macromolecular arrays on such polymeric brush substrates. Using polymeric brush substrates allows control over functional site density as well as wettability and porosity of the substrate. These polymeric brushes are useful in solid-phase synthesis of arrays of peptides, polynucleotides or small organic molecules.

The invention discloses a method for preparing semaglutide. By adopting the method, a specific synthesis method is selected, the purity and the yield of a crude product of semaglutide can be greatly increased, the synthesis cost can be lowered, and the semaglutide is applicable to large-scale production and has wide market application prospects.