CAS: 824-79-3; Sodium 4-Methylbenzenesulfinate

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专利信息

专利号:US-2021130409-A1
优先权日:2017-09-01
标 题 :Method for the Solid-Phase Synthesis of Cyclic Pentapeptides
发明人：ZHENGGUO JIANG; LUCIANO FORNI; ROBERTSON ALAN
权利人:Alsonex Pty Ltd
摘要:A method for the synthesis of a cyclic ornithine-proline-D-cyclohexylalanine-tryptophan-arginine pentapeptide of Formula A; n n n n n n n n n n n n wherein R 1 and R 2 are, independently, —H, or —C(O)R 3 where R 3 is —CH 2 Ph, —CH 2 CH 2 Ph, —CHâ•?CHPh, —C(NHAC)CH 2 Ph;n nthe method comprising the steps of;n nforming a linear proline-D-cyclohexylalanine-tryptophan-arginine-ornithine pentapeptide of Formula B, attached to a polymeric resin;n n n n n n n n n n n n n n n n n wherein R 1 is as for Formula A, RES indicates the polymeric resin, and P 1 and P 2 are protecting groups;n ncyclising the linear pentapeptide of Formula B to form a cyclic pentapeptide of Formula C, attached to the polymeric resin;n n n n n n n n n n n n n n n cleaving the cyclic peptide of Formula C from the resin providing a cleaved cyclic pentapeptide having a free amine group of an ornithine residue;n noptionally substituting the free amine group of the ornithine residue of the cleaved cyclic peptide;n nremoving the protecting groups P 1 and P 2 , to providethe cyclic peptide of Formula A.

专利号:US-11008285-B2
优先权日:2017-03-27
标 题 :Process for synthesis of mesotrione
发明人：GHARDA KEKI HORMUSJI; MATHUR SUCHET SARAN; JAIN NANDKUMAR JANARDAN; SATHE SHEKHAR VISHWANATH; DAMANIA PRAGNESH DALPATRAM
权利人:GHARDA CHEMICALS LTD
摘要:The present disclosure relates to a process for synthesis of mesotrione. The process comprises reacting 4-toluene sulfonyl chloride with alkali metal sulphite and alkali metal bicarbonate to obtain alkali metal toluene-4-sulfinate. The alkali metal toluene-4-sulfinate is reacted with alkali metal salt of monochloroacetic acid to obtain 4-methylsulfonyl toluene. Further, 4-methylsulfonyl toluene is nitrated to obtain 2-nitro-4-methylsulfonyl toluene. 2-nitro-4-methylsulfonyl toluene is oxidized and then halogenated to obtain 2-nitro-4-methylsulfonylbenzoyl halide. 2-nitro-4-methylsulfonylbenzoyl halide is reacted with alkali metal salt of 1,3-cyclohexanedione to obtain 3-(2-Nitro-4-methylsulfonylbenzoyloxy)cyclohexen-1-one which is reacted with base, a third fluid medium and cyanide ion source to obtain an amorphous mesotrione. The present disclosure also discloses the steps of converting the amorphous mesotrione to crystalline mesotrione having purity greater than 99%. The process of the present disclosure for preparing mesotrione is rapid, economic, and environment friendly.

专利号:US-9650330-B2
优先权日:2013-12-12
标题 :Process for the synthesis of aryl sulfones
发明人：MHASKE SANTOSH BABURAO; PANDYA VIRAT
权利人:COUNCIL SCIENT IND RES
摘要:The present patent discloses a novel, efficient and transition-metal-free room temperature single step process for synthesis of aryl sulfones and substituted aryl sulfones starting from aryl substrates.

专利号:US-5631384-A
优先权日:1992-09-22
标 题:Areno [e]indols, preparation method and application as intermediates in the synthesis of products with antitumoral activity
发明人：ALEXANDER KOEN; DELAMANO GARCIA JOSE; SAS BENEDIKT; TOJO SUAREZ GABRIEL; GARCIA GRAVALOS DOLORES
权利人:PHARMA MAR S A PHARMAR
摘要:The compounds (I) are useful as intermediates in the synthesis of hexahydroareno(e)cyclopropa(c)indol-4-ones with antitumoral activity.

专利号:US-7026339-B2
优先权日:2003-11-07
标题 :Inhibitors of HCV NS5B polymerase
发明人：YANG FAN; ZHANG BO; WICNIENSKI NANCY ANNE; PFEFFERKORN JEFFREY ALLEN; GREENE MEREDITH L; CHEN KE; NUGENT RICHARD A; REDING MATTHEW TODD; KELLY ROBERT CHARLES; MITCHELL MARK A; FUNK LEE A; HEIER III RICHARD FREDERICK; ANDERSON REBECCA MERRY
权利人:YANG FAN; ZHANG BO; WICNIENSKI NANCY ANNE; PFEFFERKORN JEFFREY ALLEN; GREENE MEREDITH L; CHEN KE; NUGENT RICHARD A; REDING MATTHEW TODD; KELLY ROBERT CHARLES; MITCHELL MARK A; FUNK LEE A; HEIER III RICHARD FREDERICK; ANDERSON REBECCA MERRY
摘要:The present invention relates to compounds, process for their synthesis, compositions and methods for the treatment and prevention of hepatitis C virus (HCV) infection. In particular, the present invention provides novel compounds, pharmaceutical compositions containing such compounds and methods for using these compounds in the treatment or prevention of HCV infection. The present invention also provides processes and intermediates for the synthesis of these compounds.

专利号:US-4104301-A
优先权日:1976-04-09
标题:Synthesis of sulfonyl semicarbazides
发明人：HERWEH JOHN E
权利人:ARMSTRONG CORK CO
摘要:A new synthetic route to sulfonyl semicarbazides (sulfonyldiazanecarboxamides) and sulfonyl-1,2-diazanedicarboxyamide wherein a substituted 1,2-diazenedicarboxamide is reacted with a salt of a sulfinic acid.