CAS: 50595-15-8; Tert-Butyl 2-Hydroxyacetate

相似化合物

623-50-7 79-14-1 96-35-5

上下游产品

CAS号5292-43-3 溴乙酸叔丁酯 | CAS号107-59-5 氯乙酸叔丁酯 | CAS号6456-74-2 甘氨酸叔丁酯 | CAS号6297-93-4 2-(1,3-二氧代异吲哚啉-... | CAS号59854-04-5 O-Acetyl-glykol... | CAS号35059-50-8 重氮基乙酸叔丁酯

氯乙酸叔丁酯置于c.I.酸性橙108,三乙胺体系中,用 N,N-二甲基甲酰胺 作为反应溶剂,化学反应生成 2-乙醇酸叔丁酯
参考文献:Kricheldorf,H.R.; Kaschig,J.,Justus Liebigs Annalen Der Chemie,1976,P. 882-890
标题:Kricheldorf,H.R.; Kaschig,J.,Justus Liebigs Annalen Der Chemie,1976,P. 882-890

专利信息

专利号:US-11738092-B2
优先权日:2019-12-04
标题:Methods and compositions for synthesis of therapeutic nanoparticles
发明人：WYENT EMILY A; BLUMENFELD CARL M; LAMM ROBERT J
权利人:DANTARI INC
摘要:Improved methods and reactants for the chemical synthesis of therapeutic nanoparticles are provided. The nanoparticles comprise a polymeric core, to which is attached one or more homing molecules and one or more therapeutic agents. Improvements in speed, yield and purity are attained using the methods disclosed herein.

专利号:US-11306157-B2
优先权日:2018-12-21
标 题:Expedient synthesis of core disaccharide building blocks from natural polysaccharides for heparan sulfate oligosaccharide assembly
发明人：HSIEH-WILSON LINDA C; PAWAR NITIN J; WANG LEI
权利人:CALIFORNIA INST OF TECHN
摘要:Methods for the preparation of oligosaccharide products from polysaccharide starting materials are disclosed. The methods include: hydrolyzing a glucosamine-containing polysaccharide starting material, such as heparin or heparosan, under conditions sufficient to form an oligosaccharide intermediate (e.g., a GlcN-IdoA disaccharide intermediate or a GlcA-GlcN disaccharide intermediate), and converting the oligosaccharide intermediate to the oligosaccharide product. Conversion of the oligosaccharide intermediates to the oligosaccharide products may include one or more esterification, acylation, epimerization, protection, and deprotection steps. Preparation of higher-order oligomers is described, as well as methods for selective oligosaccharide sulfation.

专利号:US-4523022-A
优先权日:1983-07-07
标 题:Analogs of the antibiotic spectinomycin
发明人：THOMAS RICHARD C
权利人:UPJOHN CO
摘要:The present invention concerns the novel, sugar-ring expansion for synthesis of novel analogs of spectinomycin or C-6' analogs of spectinomycin from known aminomethyldihydrospectinomycin and analogs thereof. Additionally, the invention concerns the novel synthesis of novel 7 membered sugar-ring analogs of dihydrospectinomycin and C-6' analogs thereof from novel 7 membered sugar-ring spectinomycin and C-6' analogs thereof by treatment with NaBH4.

专利号:US-10858414-B2
优先权日:2018-03-09
标 题:Chemo-enzymatic synthesis of semaglutide, liraglutide and GLP-1
发明人：NUIJENS TIMO; TOPLAK ANA; QUAEDFLIEG PETER JAN LEONARD MARIO
权利人:ENZYPEP B V
摘要:The invention relates to a method for preparing a coupling product having the sequence P q -W v -His-X-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Y-Glu-Phe-Ile-Ala-Trp-Leu-Val-Z-Gly-Arg-Gly. The method includes enzymatically couplingn (a) a peptide C-terminal ester or thioester having a first peptide fragment represented by the formula P q -W v -His-X-Glu-(thio)ester; and (b) a peptide nucleophile having an N-terminally unprotected amine having a second peptide fragment with the sequence H-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Y-Glu-Phe-Ile-Ala-Trp-Leu-Val-Z-Gly-Arg-Glyn whereinn P represents a protective group at the N-terminal α-amino function of the peptide C-terminal ester or thioester and q is an integer having a value of 1 or 0; W represents one or more amino acid residues, which may be the same or different and v is an integer having a value of 1 or more representing the number of amino acid residues W; X is Ala or an α-amino-isobutyric acid unit (Aib); Y is Lys, which Lys has a free side-chain ε-amino group or a side-chain ε-amino group that is protected with a protective group or a side-chain ε-amino group that is functionalized with an amino acid or another functional group; and n Z is Arg or Lys.

专利号:US-10266467-B2
优先权日:2017-08-02
标 题:Synthesis of glycols via transfer hydrogenation of alpha-functional esters with alcohols
发明人：CHAKRABORTY SUMIT; HEMBRE ROBERT THOMAS
权利人:EASTMAN CHEM CO
摘要:A transfer hydrogenation process for forming vicinal diols by hydrogenating 1,2-dioxygenated organic compounds using alcohols as the reducing agent instead of the traditional H 2 gas. The transfer hydrogenation is carried out under milder conditions of temperature and pressure than is typical for ester hydrogenation with H 2 . The milder conditions of operation provide benefits, such as lower operating and capital costs for industrial scale production as well as savings in product purification due to the avoidance of by-products from exposure of reaction mixtures and products to high temperatures.

专利号:US-10920258-B2
优先权日:2018-03-09
标题 :Chemo-enzymatic synthesis of semaglutide, liraglutide and GLP-1
发明人：NUIJENS TIMO; TOPLAK ANA; QUAEDFLIEG PETER JAN LEONARD MARIO
权利人:ENZYPEP B V
摘要:A method for synthesizing a peptide having the sequence His-X-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Y-Glu-Phe-Ile-Ala-Trp-Leu-Val-Z-Gly-Arg-Gly is disclosed. The method includes enzymatically coupling:n (a) a peptide C-terminal ester or thioester having a first peptide fragment with the sequence His-X-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-(thio)ester; and (b) a peptide nucleophile having an N-terminally unprotected amine having a second peptide fragment with the sequence H-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Y-Glu-Phe-Ile-Ala-Trp-Leu-Val-Z-Gly-Arg-Gly; wherein:n X is Ala or an α-amino-isobutyric acid (Aib) residue; Y is Lys, which Lys has a free side-chain ε-amino group or of which Lys the side-chain ε-amino group is protected with a protective group or of which Lys the side-chain ε-amino group is functionalized with an amino acid or another functional group; and Z is Arg or Lys.