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专利信息

专利号:WO-0039141-A1
优先权日:1998-12-23
标 题 :Inositol-containing hexasaccharides, their synthesis and their uses
发明人：MARTIN-LOMAS MANUEL; MOSQUERA MARIA FLORES; CHIARA JOSE LUIS
权利人:RADEMACHER GROUP LIMITED; MARTIN LOMAS MANUEL; MOSQUERA MARIA FLORES; CHIARA JOSE LUIS
摘要:The application relates to the design and synthesis of novel hexasaccharides of general formula (I), wherein: each R is independently selected from hydrogen, an alkyl or substituted alkyl group, an acyl or substituted acyl group, a phosphate group (PO3- or PO¿3?H for instance) or a protecting group, or two of the R groups may be cyclic phosphate; NX group represents N3; or in the NX group, X represents one or more groups independently selected from hydrogen, alkyl or substituted alkyl, acyl or substituted acyl; NY represents a phthalimido group (NPht) or N3; or in the NY group, Y represents one or more groups independently selected from hydrogen, alkyl or substituted alkyl, acyl or substituted acyl; or a salt or derivative of said compound. Methods for synthesizing the compounds and their uses are also disclosed.

专利号:US-10364265-B1
优先权日:2015-12-15
标题:Anhydrosugar synthesis
发明人：CHEN LI; WONG MICHAEL S; ZHANG ZONGCHAO
权利人:WILLIAM MARSH RICE UNIVERISTY; UNIV RICE WILLIAM M
摘要:Improved methods of making anhydrosugars by pyrolysis of a substrate sugar to remove at least one water molecule thereby producing a desired anhydrosugar and side products, the improvement being either 1) protecting one hydroxyl group of the substrate sugar before pyrolysis; or (2) pretreating the substrate sugar with a metal salt and optional acid before pyrolysis, wherein lower amounts of said side products are produced by said improved method.

专利号:CN-1337967-A
优先权日:1999-01-28
标 题 :Synthesis of Polyol Fatty Acid Polyester

专利号:CN-1918174-B
优先权日:2003-12-26
标题 :Synthesis of core sugar chain structure of aspargine-linked glycoprotein

专利号:US-8420354-B2
优先权日:2004-02-03
标 题:Methods to manufacture 1,3-dioxolane nucleosides
发明人：SZNAIDMAN MARCOS; PAINTER GEORGE R; ALMOND MERRICK R; CLEARY DARRYL G; PESYAN AMIR
权利人:SZNAIDMAN MARCOS; PAINTER GEORGE R; ALMOND MERRICK R; CLEARY DARRYL G; PESYAN AMIR; UNIV EMORY
摘要:This application provides a process for preparing enantiomerically pure β-D-dioxolane nucleosides. In particular, a new synthesis of (−)-DAPD, suitable for large scale development, is described. In one embodiment the invention provides a process for preparing a substantially pure β-D- or β-L-1,3-dioxolane nucleosides comprising a) preparing or obtaining an esterified 2,2-dialkoxy ethanol; b) cyclizing the esterified 2,2-dialkoxy ethanol with glycolic acid to obtain a 1,3-dioxolane lactone; c) resolving the 1,3-dioxolane lactone to obtain a substantially pure D- or L-lactone; d) selectively reducing and activating the D- or L-chiral lactone to obtain a substantially pure D- or L-1,3-dioxolane; e) coupling the D- or L-1,3-dioxolane to an activated and/or protected purine or pyrimidine base; and f) optionally purifying the nucleoside to obtain a substantially pure protected β-D- or β-L-1,3-dioxolane nucleoside.

专利号:WO-9210496-A1
优先权日:1990-12-05
标 题:ENANTIOMERICALLY PURE β-L-(-)-1,3-OXATHIOLANE NUCLEOSIDES
发明人：CHU CHUNG K; BEACH J WARREN; JEONG LAK-SHIN
权利人:UNIV GEORGIA RES FOUND
摘要:An asymmetric process for the preparation of enantiomerically pure β-L-(-)-1,3-oxathiolane-nucleosides that includes the initial preparation of the key chiral intermediates (2R,5R) and (2R,5S)-5-(O-protected)-2-(protected-oxymethyl)-1,3-oxathiolane from 1,6-thioanhydro-L-gulose. The 2R,5(R,S)-5-(O-protected)-2-(protected-oxymethyl)-1,3-oxathiolane is condensed with a desired heterocyclic base, typically a purine or pyrimidine base, to provide the product nucleoside. The synthesis can be used to prepare the pharmaceutically important compound, β-L-(-)-1-[(2β,4β)-2-(hydroxymethyl)-4-(1,3-thioxolane)]cytosine (β-L-(-)BCH-189).