CAS: 14987-04-3; Magnesium Trisilicate

专利信息

专利号:US-2008032964-A1
优先权日:2006-04-10
标题:Process for the synthesis of azetidinone
发明人：KANSAL VINOD K; AHMAD SUHAIL; MARIAPPAN SHANMUGAVEL; TYAGI BHUPENDRA; PERLMAN NURIT; LE PAIH JACQUES; ZANOTTI-GEROSA ANTONIO
权利人:KANSAL VINOD K; AHMAD SUHAIL; MARIAPPAN SHANMUGAVEL; TYAGI BHUPENDRA; PERLMAN NURIT; LE PAIH JACQUES; ZANOTTI-GEROSA ANTONIO
摘要:Provided are intermediates useful for the synthesis of hydroxyl-alkyl substituted azetidinones, processes of their preparation, and processes for the synthesis of certain hydroxyl-alkyl substituted azetidinones. Also provided are processes for the synthesis of 1-(4-fluorophenyl)-3(R)-[3-(4-fluorophenyl)-3(S)-hydroxypropyl]-4(S)-(4-hydroxyphenyl)-2-azetidinone, or ezetimibe.

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-9315483-B2
优先权日:2007-09-13
标题 :Synthesis of deuterated catechols and benzo[D][1,3]dioxoles and derivatives thereof
发明人：JONES ANDREW D; ZELLE ROBERT E; SILVERMAN I ROBERT
权利人:CONCERT PHARMACEUTICALS INC
摘要:The present invention provides a convenient and efficient process for the synthesis of d 2 -benzo[d][1,3]dioxoles.

专利号:US-2024400608-A1
优先权日:2021-09-03
标题:Synthesis of bicycle toxin conjugates, and intermediates thereof
发明人：WITTY DAVID; LIMB DARREN; MIN BYOUNG JOON; HE LIWEN; SANDERS WILLIAM J; NNANABU ERNEST OBINNA
权利人:BRICYCLETX LTD
摘要:The present invention relates to Bicycle toxin conjugates, methods for preparation, and methods of use for treating cancer.

专利号:US-2008015197-A1
优先权日:2006-06-26
标题 :Process for the preparatrion of zopiclone
发明人：MAINFELD ALEX; MENDELOVICI MARIOARA
权利人:MAINFELD ALEX; MENDELOVICI MARIOARA
摘要:Provided is a process for the preparation of zopiclone, an intermediate in the synthesis of eszopiclone.

专利号:WO-2010146391-A1
优先权日:2009-06-15
标题:Regioselective synthesis of letrozole
发明人：GORE VINAYAK GOVIND; SHUKLA VINAY KUMAR; BHANDARI SHERYAS; HASBE SURESH; MEKDE SANDEEP
权利人:GENERICS UK LTD; MYLAN INDIA PRIVATE LTD; GORE VINAYAK GOVIND; SHUKLA VINAY KUMAR; BHANDARI SHERYAS; HASBE SURESH; MEKDE SANDEEP
摘要:The present invention relates to an improved process for the preparation of letrozole (I) and its pharmaceutically acceptable salts, to compositions comprising letrozole or a pharmaceutically acceptable salt thereof, and to uses of such compositions. In particular it relates to a process and to novel intermediates for preparing letrozole and its salts substantially free from regioisomeric impurities.