专利号:US-9353057-B2 优先权日:2003-12-30 标 题:Synthesis of acyloxyalkyl carbamate prodrugs and intermediates thereof 发明人:GALLOP MARK A; DAI XUEDONG; SCHEUERMAN RANDALL A; RAILLARD STEPHEN P; MANTHATI SURESH K; YAO FENMEI; PHAN THU; LUDWIKOW MARIA; PENG GE; BHAT SEEMA 权利人:XENOPORT INC 摘要:Methods for synthesis of 1-(acyloxy)-alkyl carbamates, particularly, the synthesis of 1-(acyloxy)-alkyl carbamate prodrugs of primary or secondary amine-containing drugs are described. Also described are methods for synthesis of 1-(acyloxy)-alkyl N-hydroxysuccinimidyl carbonates which are useful intermediates in the synthesis of 1-(acyloxy)-alkyl carbamates are also described.
专利号:US-2003181713-A1 优先权日:2002-03-04 标 题:Processes for the synthesis of chloroadenosine and methylthioadenosine 发明人:SRIRANGAM JAYARAM KASTURI; SAENZ JAMES EDWARD 摘要:An in situ process for preparing chloroadenosine is described, wherein adenosine in a non-aqueous solvent is reacted with a thionyl chloride and a pyridine to form a reaction solution; the non-aqueous solvent is exchanged with a lower alcohol, and a base is added to the reaction solution; and the resulting chloroadenosine is filtered, washed and dried. Additionally, a two-step process for the synthesis of methylthioadenosine using the chloroadenosine prepared in situ is described.
专利号:US-6306179-B1 优先权日:1997-10-22 标题:Method for the synthesis of 2-hydroxyalkyl-para-phenylenediamines, new 2-hydroxyalkyl-para-phenylenediamines, their use for oxidation dyeing, dyeing compositions and methods of dyeing 发明人:GENET ALAIN; LAGRANGE ALAIN 权利人:OREAL 摘要:The present invention relates to a new method for the synthesis of 2-hydroxyalkyl-para-phenylenediamines which are substituted or unsubstituted at the 5-position of the benzene ring, new 2-hydroxyalkyl-para-phenylenediamines which are substituted or unsubstituted at the 5-position of the benzene ring, their use for the oxidation dyeing of keratinous fibers, the dyeing compositions containing them, as well as the methods of dyeing using them.
专利号:US-12157751-B2 优先权日:2021-05-12 标题 :Process for the synthesis of oligomeric siloxane having sulfone moiety, and silicon-containing compounds having sulfone moiety 发明人:SINGHAL PRAVEEN KUMAR; TARAFDAR GOURAV; RAMESH APEKSHA 权利人:MOMENTIVE PERFORMANCE MAT INC 摘要:There is provided herein a process for the synthesis of sulfonyl silanes. There is also provided herein various sulfenylated and sulfonylated silicon-containing compounds made by the process.
专利号:US-7619116-B2 优先权日:2003-12-17 标 题:Intermediates for the synthesis of (R)-tamsulosin and of its pharmaceutically acceptable salts and process for their preparation 发明人:DAMBRIN VALERY; LENOIR JEAN-YVES; SCHNEIDER JEAN-MARIE; GUILLAMOT GERARD; FOLLET MICHEL; BECKER ABRAM 权利人:PRODUCTS CHIMIQUES AUXILIAIRES 摘要:A subject matter of the present invention is novel intermediates for the synthesis of (R)-tamsulosin and of its pharmaceutically acceptable salts, and also the associated preparation process.
专利号:US-11370736-B2 优先权日:2019-04-01 标 题:Synthesis of fluoro hemiacetals via transition metal-catalyzed fluoro ester and carboxamide hydrogenation 发明人:DUB PAVEL A; BATRICE RAMI J; GORDON JOHN C 权利人:TRIAD NAT SECURITY LLC 摘要:This application is directed to use of transition metal-ligand complexes to hydrogenate fluorinated esters and carboxamides into fluorinated hemiacetals. Methods for synthesis of certain ligands are also provided.