CAS: 141-52-6; Sodium Ethoxide

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专利信息

专利号:US-11667658-B2
优先权日:2021-06-30
标 题:Chemical synthesis of the organoarsenical antibiotic arsinothricin
发明人：ROSEN BARRY P; YOSHINAGA MASAFUMI; WNUK STANISLAW F; HOWLADER MD ABU HASAN; SUZOL SK MD SAZZAD HOSSAIN
权利人:ROSEN BARRY P; YOSHINAGA MASAFUMI; WNUK STANISLAW F; HOWLADER MD ABU HASAN; SUZOL SK MD SAZZAD HOSSAIN; THE FLORIDA INTERNATIONAL UNIV BOARD OF TRUSTEES
摘要:The subject invention provides methods for the chemical synthesis of racemic arsinothricin (D,L-AST), the novel organoarsenical antibiotic. One is by condensation of the 2-chloroethyl(methyl)arsinic acid with acetamidomalonate, and the second involves reduction of the N-acetyl-protected derivative of hydroxyarsinothricin (AST-OH) and subsequent methylation of the resulting sodium salt of trivalent arsenic intermediate with methyl iodide. The enzyme AST N-acetyltransferase (ArsN1) was utilized to purify L-AST from racemic AST. This expedient chemical synthesis of AST provides a source of this novel antibiotic for future drug development.

专利号:US-2025019732-A1
优先权日:2023-07-07
标 题:Method for chemical-biological cascade synthesis of l-phosphinothricin and mutants therefor
发明人：XUE YAPING; CHENG FENG; ZOU SHUPING; XU JIANMIAO; ZHENG YUGUO
权利人:UNIV ZHEJIANG TECHNOLOGY
摘要:A method for chemical-biological cascade synthesis of L-phosphinothricin is carried out as follows: 3-(methylethoxyphosphinyl) ethyl propionate is synthesized by addition reaction from diethoxymethylphosphine and acrylic acid, then a condensation reaction is carried out with 3-(methylethoxyphosphinyl) ethyl propionate and sodium ethoxide as reactants, then the product is subjected to a hydrolysis reaction with diethyl oxalate to synthesize 4-(hydroxymethylphosphinyl)-2-oxobutyric acid, and finally, L-phosphinothricin is catalytically synthesized by taking 4-(hydroxymethylphosphinyl)-2-oxobutyric acid as a raw material, and using highly active and stable wet cells co-expressing phsophinothricin dehydrogenase and alcohol dehydrogenase or co-expressing a phsophinothricin dehydrogenase mutant and alcohol dehydrogenase as a biocatalyst, thereby solving the problems of existing L-phosphinothricin synthesis being tedious, low asymmetric amination reduction activity and poor stability.

专利号:US-3836544-A
优先权日:1972-04-25
标 题:Synthesis of zearalanes ii and related compounds and intermediates useful in the syntheses thereof
发明人：URRY W; MULLENBACH G
权利人:COMMERCIAL SOLVENTS CORP
摘要:THIS INVENTION PROVIDES A NEW SYNTHESIS FOR NORZEARALANE II AND RELATED COMPOUNDS WHICH RELATED COMPOUNDS AND NORZEARALANE II ARE REPRESENTED BY THE FORMULA 1,5-DI(HO-),2,3-(-CO-O-CH2-(CH2)X-)-BENZENE WHERE X IS AN INTEGER HAVING A VALUE FROM 1 TO 13 INCLUSIVE. THE ANABOLIC AGENT NORZEARALANE II, IN WHICH X=9 IN THEFOREGOING FORMULA, IS PREPARED BY A TOTAL CHEMICAL SYNTHESIS INVOLVING THE REACTION OF 10-UNDECENAL WITH MALONIC ACID TO PRODUCE TRANS-2,12-TRIDECADIENOIC ACID; TREATING THE ACID SO FORMED WITH DIAZOMSTHANE TO YIELD METHYL TRANS-2,12-TRIDECADIENOATE; REACTING THE METHYL ESTER WITH ETHYL ACETOACETATE AND SODIUM ETHOXIDE TO FORM THE SODIUM SALT OF ETHYL 6-(9-DECENYL)-B-DIHYDRORESORCYLATE; BROMINATING THE DIHYDRORESORCYLATE TO PREPARE ETHYL 3-BROMO- 6 - (9-DECENYL)-B-DIHYDRORESOCRYLATE; DE-HYDROBROMINATING THE FOREGOING BROMO DERIVATIVE TO GIVE ETHYL 6-(9-DECENYL)-B-RESORCYLATE; REACTING THE RESORCYLATE ESTER WITH BENZYL CHLORIDE TO PRODUCE ETHYL 6-(9-DECENYL)-BRESORCYLATE DIBENZYL ETHER; SUBJECTING THE BENZYLATED ESTER TO THE ACTION OF DIBORANE, WATER AND HYDROGEN PEROXIDE TO FORM ETHYL 2,4-BIS (BENZYLOXY)-6-(10-HYDROXYDECYL)BENZOATE; TREATING THE FOREGOING BENZOATE WITH SODIUM ETHOXIDE TO PREPARE NORZEARALANE II DIBENZYL ETHER, ONE ALSO TO PREPARE AS A BY-PRODUCT THE DIMERIC DILACTONE OF 2,4-BIS(BENZYLOXY)-6-(10-HYDROXYDECYL)-BENZOIC ACID; HYDROGENATING NORZEARALANE II DIBENZYL ETHER TO FORM NORZEARALANE II. IN GENERAL, A HOMOLOGUE OF NORZEARALANE II AND/OR OF THE CORRESPONDING DIMERIC DILACTONE IS PREPARED BY SUBSTITUTING FOOR 10-UNDECENAL IN THE FOREGOING SEQUENCE OF REACTIONS AN UNSATURATED ALDEHYDE HAVING THE FORMULA CH2=CH-(CH2)X-1-CHO WHERE X IS AN INTEGER WHICH MAY HAVE THE VALUE 1,2,3,4, 5, 6, 7, 8, 9, 10, 11, 12 OR 13 SPECIFICALLY ZEARALANE II (WHERE X=10) IS PREPARED STARTING WITH 11-DODECENAL AND THE DIMERIC DILACTONE FROM 6-(5-HYDROXYPENTYL-B-RESORCYCLIC ACID DIBENZYL ETHER IS PREPARED WHEN THE STARTING ALDEHYDE IS 5-HEXENAL (WHERE X= 4) THE INVENTION ALSO COVERS PHYSIOLOGICALLY ACTIVE COMPOUNDS RELATED TO THE ZEARALANES II AND KNOW AS DIMERIC DILACTONES HAVING THE FORMULA, 1,5-DI(RO-),2,3-(-CO-O-CH2-(CH2)X-(3,5-DI(RO-)-1,6-PHENYL ENE)-CO-O-CH2-(CH2)X-)-BENZENE X IS AN INTEGER WHICH MAY HAVE THE VALUE 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 OR 13 AND WHERE R IS EITHE HYDROGEN OR A BENZYL RADICAL (C6H5CH2-). MORE PARTICULARLY, THIS INVENTION RELATES TO NOVEL INTERMEDIATES PRODUCED IN THE SYNTHESIS OF THE ABOVE COMPOUNDS AND TO PROCESSES FOR MAKING THESE INTERMEDIATES.

专利号:US-3901922-A
优先权日:1972-04-25
标题 :Synthesis of zearalanone and related compounds and intermediates useful in their synthesis
发明人：URRY WILBERT HERBERT; MULLENBACH GUY TOWNS
权利人:COMMERCIAL SOLVENTS CORP
摘要:WHEREIN X is an integer having a value from 2 to 6 inclusive and Y is an integer having a value from 2 to 8 inclusive. It also provides for new methods of making compounds useful in the synthesis of zearalanone and related compounds. The new compounds useful as intermediates are 2,7-octadienoic acid; methyl 2,7-octadienoate; sodium ethyl 6-(4-pentenyl)- Beta -dihydroesorcylate; ethyl 6-(4-pentenyl)- Beta dihydroresorcylate; sodium methyl 6-(4-pentenyl)- Beta dihydroresorcylate; methyl 6-(4-pentenyl)- Beta dihydroresorcylate; methyl 3-bromo-6-(4-pentenyl)- Beta dihydroresorcylate; methyl 6-(4-pentenyl)- Beta -resorcylate; ethyl 6-(4-pentenyl)- Beta -resorcylate; ethyl 6-(4-pentenyl)Beta -resorcylate dibenzyl ether; tetrahydropyran-2-yl 4-penten2-yl ether; ethyl 6-(6-oxo-10-tetrahydropyran-2-xyloxyundecyl)Beta -resorcylate dibenzyl ether; and 6-(10-hydroxy-6oxounderyl)- Beta -resorcylic acid dibenzyl ether. Methods for preparing these intermediates are also disclosed. This invention provides a new synthesis for zearalanone and for related compounds having more or fewer carbon atoms in the nonaromatic ring than does zearalanone, which related compounds and zearalanone are represented by the formula

专利号:US-8859763-B1
优先权日:2013-05-17
标题 :Process for the synthesis of 3,4-dimethoxybicyclo[4.2.0]OCTA-1,3,5-triene-7-carbonitrile, and application in the synthesis of ivabradine and addition salts thereof with a pharmaceutically acceptable acid
发明人：VAYSSE-LUDOT LUCILE; LE FLOHIC ALEXANDRE; VAULTIER MICHEL; PUCHEAULT MATHIEU; KAMINSKI THOMAS
权利人:SERVIER LAB
摘要:Process for the synthesis of the compound of formula (I): n nApplication in the synthesis of ivabradine, addition salts thereof with a pharmaceutically acceptable acid and hydrates thereof.

专利号:WO-2011101864-A1
优先权日:2010-02-17
标题 :Novel process for the synthesis of phenoxyethyl derivatives
发明人：JAIN RAJESH; JAGDEESHWAR RAO R; MAHENDER RAO SIRIPRAGADA
权利人:PANACEA BIOTEC LTD; JAIN RAJESH; JAGDEESHWAR RAO R; MAHENDER RAO SIRIPRAGADA
摘要:The present invention provides an improved process for the synthesis of 2-[2- (2,2,2-trifluoroethoxy)phenoxy]ethanol intermediate, its derivatives and/or its pharmaceutically acceptable salts, useful in the synthesis of α-1 adrenoceptor blockers such as silodosin.