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专利信息

专利号:US-10487099-B2
优先权日:2017-06-30
标 题:Synthesis of hypervalent iodine reagents with dioxygen
发明人：POWERS DAVID CHARLES; MAITY ASIM; HYUN SUNG-MIN
权利人:TEXAS A & M UNIV SYS
摘要:Methods of synthesis of hypervalent iodine reagents and methods for oxidation of organic compounds are disclosed.

专利号:US-2001041803-A1
优先权日:2000-03-21
标题 :Conversion of 9-dihydro-13-acetylbaccatin III to baccatin III and 10-deacetyl baccatin III
发明人：KASITU GERTRUDE C; NOAH JAPHETH W
摘要:Novel methods and synthetic intermediates to prepare baccatin III and 10-deacetylbaccatin from readily available 9-dihydro-13-acetylbaccatin III are described. Selective protection and deprotection of the C-7 hydroxyl functionality provides an entry into facile synthesis of novel taxol intermediates, as well as, providing new methods for the preparation of paclitaxel and docetaxel in large scale. Selective oxidation of the C-9 hydroxyl without the need for protection of the C-7 hydroxyl is described.

专利号:US-11708320-B2
优先权日:2018-06-29
标 题:Environmentally-friendly hydroazidation of olefins
发明人：XU HAO
权利人:UNIV GEORGIA STATE RES FOUND
摘要:The present invention provides processes for the synthesis of organic azides, intermediates for the production thereof, and compositions related thereto.

专利号:US-8575331-B2
优先权日:2003-01-15
标题:Synthesis and use of 2′-substituted-N6-modified nucleosides
发明人：AN HAOYUN; RAMASAMY KANDA; SHAW STEPHANIE
权利人:AN HAOYUN; RAMASAMY KANDA; SHAW STEPHANIE; VALEANT PHARMACEUTICALS NORTH AMERICA
摘要:An improved method of preparing a sugar modified nucleoside analog includes a protocol in which a hydroxy group of a sugar is selectively deprotected and oxidized prior to nucleophilic modification of the corresponding carbonyl group. The modified sugar is then coupled to a heterocyclic base that is modified with a dual nucleophilic reagent in a further step that provides N6-modified adenosine analogs with high stereoselectivity.

专利号:WO-2007132119-A1
优先权日:2006-05-15
标 题 :In situ or one-pot hydrogenation and reductive amination method
发明人：BURGOS ALAIN; CAILLE JEAN-CLAUDE; LORRAINE GRADLEY MICHELLE; FREIN STEPHANE; DERRIEN YVON; CHENARD ERIC
权利人:PPG SIPSY; NOVACTA BIOSYSTEMS LTD; BURGOS ALAIN; CAILLE JEAN-CLAUDE; LORRAINE GRADLEY MICHELLE; FREIN STEPHANE; DERRIEN YVON; CHENARD ERIC
摘要:The invention relates to a method for the synthesis of an ester compound of the trans-4-amino-cyclohexane carboxylic acid of formula (I). Said method is characterised in that the ester (I) is obtained, in the form of a salt or otherwise, from a compound of formula (II) by means of a Hoffmann rearrangement reaction and optionally transesterification according to diagram A wherein R represents an alkyl, aryl or alkylaryl grouping. The invention provides a very high yield of said ester in an essentially trans form using a method involving few steps.

专利号:US-2019002487-A1
优先权日:2017-06-30
标题:Synthesis of hypervalent iodine reagents with dioxygen