CAS: 55726-22-2; Icosanoic Anhydride

相似化合物

623-65-4 645-66-9 626-29-9

上下游产品

CAS号114599-19-8 °Ctadecyl-malon... | CAS号4475-04-1 Propanedioic ac... | CAS号506-30-9 花生酸 | CAS号108-24-7 乙酸酐

📜十八烷基丙二酸 反应生成 花生酸酐
参考文献:Bleyberg; Ulrich,Chemische Berichte,1931,Vol. 64,P. 2511
标题:Bleyberg; Ulrich,Chemische Berichte,1931,Vol. 64,P. 2511

专利信息

专利号:US-8791287-B2
优先权日:2010-07-02
标 题:Process for the synthesis of tapentadol and intermediates thereof
发明人：MOTTA GIUSEPPE; VERGANI DOMENICO; BERTOLINI GIORGIO; LANDONI NICOLA
权利人:MOTTA GIUSEPPE; VERGANI DOMENICO; BERTOLINI GIORGIO; LANDONI NICOLA; EUTICALS SPA
摘要:The object of the present invention is a new process for the synthesis of tapentadol, both as free base and in hydrochloride form, which comprises the step of alkylation of the ketone (VII) to yield the compound (VIII), as reported in Diagram 1, with high stereoselectivity due to the presence of the benzyl group as substituent of the amino group. It was surprisingly found that this substitution shifts the keto-enol equilibrium towards the desired enantiomer and amplifies the capacity of the stereocenter present in the compound (VII) to orient the nucleophilic addition of the organometallic compound at the carbonyl towards the desired stereoisomer. This substitution thus allows obtaining a considerable increase of the yields in this step, and consequently allows significantly increasing the overall yield of the entire tapentadol synthesis process. n A further object of the present invention is constituted by the tapentadol free base in solid form, obtainable by means of the process of the invention. n Still another object of the invention is represented by the crystalline forms I and II of the tapentadol free base. n A further object of the present invention is the mixture of the crystalline forms I and II of the tapentadol free base.

专利号:EP-2589587-A1
优先权日:2011-11-04
标题:Synthesis of nitrogen substituted cyclopropanes
发明人：RASPARINI MARCELLO; TADDEI MAURIZIO; CINI ELENA; MINELLI COSIMA; TURNER NICHOLAS; HUGENTOBLER KATHARINA GLORIA
权利人:CHEMO IBERICA SA
摘要:The invention is about a new synthetic pathway for the preparation of enantiomerically pure nitrogen substituted cyclopropanes, in particular the trans- cyclopropanamine ( 1 ), a key intermediate in the synthesis of Ticagrelor:n n The invention also relates to the processes for preparing said compounds or their salts and the use of said compounds as intermediates in preparing pharmaceutically active ingredients.

专利号:US-8729308-B2
优先权日:2009-12-01
标 题:Process for the preparation of tapentadol and intermediates thereof
发明人：MOTTA GIUSEPPE; VERGANI DOMENICO; BERTOLINI GIORGIO
权利人:MOTTA GIUSEPPE; VERGANI DOMENICO; BERTOLINI GIORGIO; EUTICALS SPA
摘要:The present invention refers to a new process for the synthesis of tapentadol comprising the quantitative resolution of the racemic mixture (V) to obtain the stereoisomer of (S)-3-(dimethylamino)-2-methyl-1-(3-nitrophenyl)-propan-1-one (VII) according to the Scheme 2 below n nusing the (2R,3R)—O,O′-dibenzoyltartaric chiral acid wherein said resolution is quantitative.n n The present invention also refers to some intermediate compounds of the new synthesis process of tapentadol.

专利号:US-6867202-B1
优先权日:1997-06-25
标 题 :Treatment of insulin resistance
发明人：CARPINO PHILIP ALBERT; CHIU CHARLES KWOK-FUNG; PAN LYDIA CODETTA; LEFKER BRUCE ALLEN; TREADWAY JUDITH LEE; ZAWISTOSKI MICHAEL PAUL
权利人:PFIZER
摘要:This invention is directed to methods of treating insulin resistance in a mammal which comprise administering an effective amount of a compound of formula I, n n nwhere the variables are defined in the specification, or the stereoisomeric mixtures, diastereomerically enriched, diastereomerically pure, enantiomerically enriched or enantiomerically pure isomers, or the pharmaceutically acceptable salts and prodrugs thereof to said mammal. The compounds of formula I are growth hormone secretagogues and as such are useful for increasing the level of endogenous growth hormone. In another aspect this invention provides certain intermediates which are useful in the synthesis of the foregoing compounds and certain processes useful for the synthesis of said intermediates and th compounds of formula I. This invention is further directed to methods comprising administering to a human or other animal a combination of a functional somatostatin antagonist such as an alpha-2 adrenergic agonist and a compound of formula I.

专利号:US-8269023-B2
优先权日:2007-03-05
标题 :Process for preparation of duloxetine hydrochloride
发明人：SIYAN RAJINDER SINGH; GOHEL SUNIL KUMAR VINUBHAI; SINGH GIRIJ PAL
权利人:SIYAN RAJINDER SINGH; GOHEL SUNIL KUMAR VINUBHAI; SINGH GIRIJ PAL; LUPIN LTD
摘要:An improved process for synthesis of duloxetine hydrochloride (1) having chiral purity greater than 99.9% that is characterized by the following:n (i) preparation of racemic condensed compound (RS)—N,N-di methyl-3-(1-naphthyloxy)-3-(2-thienyl)propanamine (4) by reaction of racemic hydroxy compound (2) with 1-fluoronaphthalene (3) in presence of a base such as sodamide, potassium amide or potassium bis(trimethylsilyl)amide (KHDMS) in polar aprotic solvent, (ii) optical resolution of racemic condensed compound (5a+5b) with di-benzoyl-L-tartaric acid (7, DBTA, R=H) or di-para-anisoyl-L-tartaric acid (7, DATA, R=OCH 3 ) to obtain crude (S)—N.N-dimethyl-3-(1-naphthyloxy)-3-(2-thienyl)propanamine dibenzoyl tartarate salt (8a) or (S)—N.N-dimethyl-3-(1-naphthyloxy)-3-(2-thienyl)propanamine di-p-anisoyl tartarate salt (9a) respectively, (iii) optionally purification of crude tartarate salts (8a or 9a) by crystallization, (iv) optionally purification of duloxetine hydrochloride (1) by crystallization and (v) racemization of undesired (R)—N,N-di methyl-3-(1-naphthyloxy)-3-(2-thienyl)propanamine (5b) by treatment with base potassium bis(trimethylsilyl)amide (KHDMS) to obtain racemic mixture of condensed compounds (5a and 5b).

专利号:US-2004110228-A1
优先权日:2002-04-01
标 题:Combinatorial organic synthesis of unique biologically active compounds
发明人：MCALPINE SHELLI R; TAYLOR RACHEL E; BOLLA MEGAN L; SEGALL ANCA M
摘要:The invention provides a method for making a combinatorial library of cyclic compounds, such as Holliday junction-trapping compounds, comprising the steps of (a) obtaining a plurality of trimers according to the generic structure X 1- X 2- X 3 , wherein X 1 , X 2 and X 3 can be independently any naturally or nonnaturally occurring amino acids or peptidomimetics thereof; (b) optionally coupling a spacer S to the trimer at either end; (c) cyclizing two trimers or trimer-spacer conjugates in a head-to-tail orientation; thereby obtaining a combinatorial library of compounds, wherein the library does not include an unmodifed or naturally occurring Holliday Junction-trapping compounds. The invention additionally provides methods macrocyclic compounds that are synergimycin derivatives.