CAS: 3891-59-6; (2R,3R,4S,5R)-6-Oxohexane-1,2,3,4,5-Pentayl Pentaacetate

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CAS号50-99-7 D(+)-无水葡萄糖 | CAS号108-24-7 乙酸酐 | CAS号4984-72-9 [2,3,4,5-tetraa... | CAS号14131-64-7 N-[(2S,3R,4S,5R... | CAS号54220-78-9 N-((2S,3R,4S,5R... | CAS号174761-03-6 indioside I | CAS号1365309-19-8 indioside J | CAS号7726-95-6 溴素 | CAS号64-19-7 冰醋酸 | CAS号572-09-8 2,3,4,6-四乙酰氧基-a...

Penta-O-Acetyl-Aldehydo-D-Glucose Oxime置于盐酸,乙醇,Sodium Nitrite体系中,化学反应生成2,3,4,5,6-Alpha-D-葡萄糖五乙酸酯
参考文献:A New Synthesis Of Aldehydo Sugar Acetates1
标题:A New Synthesis Of Aldehydo Sugar Acetates1
摘要:
Doi:10.1021/ja01323A045

专利信息

专利号:US-6350865-B1
优先权日:1999-02-19
标 题 :Process for the preparation of pentaacetyl-β-D-glucopyranose
发明人：TSUJI MASAHIRO; YAMAZAKI HIROYUKI
权利人:NISSHIN PHARMA INC
摘要:In a process for the preparation of pentaacetyl-β-D-glucopyranose by reacting D-glucose with acetic anhydride in the presence of sodium acetate catalyst, the improvement is provided wherein 5-10 mols of acetic anhydride are used per mol of D-glucose and the reaction is performed in an organic solvent. Pentaacetyl-β-D-glucopyranose is useful as intermediates for the synthesis of raw materials for industrial chemicals, medicines, cosmetics and the like.

专利号:US-4900814-A
优先权日:1985-12-16
标题:Synthesis of podophyllotoxin derivatives
发明人：STERLING JEFFREY; NUDELMAN ABRAHAM; HERZIG JAACOV; KEINAN EHUD; WEINER BEN Z
权利人:STERLING JEFFREY; NUDELMAN ABRAHAM; HERZIG JAACOV; KEINAN EHUD; WEINER BEN Z
摘要:There is provided a novel process for the production of the epipodophyllotoxin glycosides, Etoposide and Teniposide. There are further provided certain novel 4'-demethylepipodophyllotoxin derivatives of the following formula ##STR1## where W is hydrogen or 2,3-di-O-acetyl-4,6,O-ethylidene-D-glucopyran-1-yl. These intermediates are easily transformed into Etoposide and Teniposide and into further derivatives of this series.

专利号:US-6387238-B1
优先权日:1999-08-05
标题:Electrolytic synthesis of peracetic acid
发明人：MERK TOM L; MALCHESKY PAUL S; LIU CHUNG-CHIUN
权利人:STERIS INC
摘要:An electrolysis unit (10, 210, 310) has an anode (16, 216,316) and a gas diffusion cathode (18, 218, 318). Air is fed to the cathode (18, 218) to generate peroxide species, such as hydrogen peroxide, peroxide ions, or peroxide radicals by electrolysis of oxygenated water. A peracetic acid precursor, such as acetyl salicylic acid, reacts with the peroxide to form peracetic acid. An ion selective barrier (20, 220) optionally separates the unit into two chambers, an anodic chamber (12, 212) and a cathodic chamber (14, 214). By selecting either a proton permeable membrane or an anion exchange membrane for the barrier, the peracetic acid may be formed in either an alkaline electrolyte in the cathodic chamber or in an acid electrolyte in the anode chamber, respectively.

专利号:US-10400004-B2
优先权日:2014-08-07
标题 :Chemical synthesis method of phillyrin
发明人：FU LI
权利人:FU LI
摘要:The present invention relates to a chemical synthesis method for phillyrin. The method of the present invention comprises: first dissolving a glycosyl receptor phillygenin and a glycosyl donor in an organic solvent for glycosylation to obtain tetraacyl phillyrin; then dissolving the tetraacyl phillyrin in a second organic solvent, and adding sodium methoxide for deacylation, adding an acidic pH regulator to regulate the pH value of the reaction mixture to neutral; and finally carrying out purification treatment to obtain phillyrin. The advantages and practical values of the chemical synthesis method for phillyrin of the present invention lie in: the raw material is easy to get, the catalysts used for glycosylation are cheap and easy to get, the production cost is greatly reduced, and it can be used for industrial production.

专利号:US-10787576-B2
优先权日:2015-04-30
标 题 :Method for the preparation of a coating comprising oligomeric alkynes
发明人：FRAUENRATH HOLGER; SCHRETTL STEPHEN; SCHULTE BJOERN; LETERRIER YVES
权利人:ECOLE POLYTECHNIQUE FED DE LAUSANNE EPFL EPFL TTO
摘要:The invention relates to a method for the preparation of a coating comprising at least one coating layer on a substrate, the method comprising the steps of a. providing monomers of the type R—(N) x -(L) m -(Câ•?C) n -(L′) o -(N′) y —R′, wherein R is a head moiety, R′ is a tail moiety, (C≡C) n is an oligoyne moiety, L and L′ are linker moieties, N and N′ independently are branched or unbranched optionally substituted C 1 -C 25 alkyl moieties optionally containing 1 to 5 heteroatoms, x, m, o, and y are independently 0 or 1, n is 4 to 12, and wherein the head moiety allows for an interaction with the surface of the substrate; b. bringing the monomers into contact with the substrate wherein the interaction of the head moieties of the monomers with the surface of the substrate induces at least a part of the monomers to align in a defined manner thereby forming a film on the surface and bringing the oligoyne moieties of the monomers into close contact with each other; c. inducing a reaction between oligoyne moieties by providing an external stimulus so as to at least partially cross-link the aligned monomers, thereby forming a coating layer on the substrate. The invention further relates to a coating obtainable according to the method of the invention, the use of a coating obtainable according to the method of the invention, a substrate comprising a coating obtainable according to the invention and the use of solid substrate. The invention further relates to a method for the synthesis ofthe monomers according to the invention.

专利号:US-3201385-A
优先权日:1963-02-11
标 题 :Synthesis of arbutin
发明人：JARRETT ARTHUR D
权利人:POLAROID CORP