Processes and intermediates for the preparation of protease inhibitors

    公开(公告)号:NZ595817A

    公开(公告)日:2014-03-28

    申请号:NZ59581710

    申请日:2010-04-27

    Applicant: VERTEX PHARMA

    Abstract: 595817 Disclosed herein are processes for preparing a mixture of cis- and trans-octctahydropenta[c]pyrrole-1-carboxylic acids of formula 7, wherein R’ substituents are described in the specification, comprising carboxylation of an azabicyclooctane of formula 6, and equilibrating in the presence of a suitable base wherein the trans-/cis-ratio is greater than 80 to 20, or 90 to 10 or 98 to 2. Also disclosed herein are processes for preparing a compound of formula 4, comprising providing a compound of Formula 7 forming a salt with an optically active amine; crystallizing the salt; esterifying the acid provided in step iii); removing the N-alkoxycarbonyl group to produce (1S,3aR,6aS)-t-butyl-octahydrocyclopenta[c]pyrrole-1-carboxylate, t-butyl ester; reacting the bicyclic aminoester of step v) with a protected amino acid of Formula 26, wherein Z is an amine protecting group, in the presence of a coupling reagent, to produce an amide-ester of Formula 27; removing the protecting group Z from the amide-ester of step vi) to produce the amino compound of Formula 28; reacting the amino compound of Formula 28 with a protected amino acid of Formula 29in the presence of a coupling reagent to produce a tripeptide of Formula 30; removing the protecting group Z in the tripeptide of Formula 30 to produce a free amino-tripeptide of Formula 31; reacting the amino-tripeptide of Formula 31 with pyrazine-2-carboxylic acid in the presence of a coupling reagent to produce an amide-tripeptide ester of Formula 33; hydrolyzing the ester of the amide-tripeptide ester of Formula 33 to produce an amide-tripeptide acid of Formula 34; reacting the amide-tripeptide acid of Formula 34 with an aminohydroxy-amide of Formula 18in the presence of a coupling reagent to produce a hydroxy-tetrapeptide of Formula 35; and oxidizing the hydroxy group of Formula 35 to produce the compound of Formula 4.

    METODOS PARA LA PREPARACION DE COMPUESTOS DE TIOFENO

    公开(公告)号:AR087345A1

    公开(公告)日:2014-03-19

    申请号:ARP120102727

    申请日:2012-07-26

    Applicant: VERTEX PHARMA

    Abstract: También se reivindican métodos para obtener intermediarios. Los compuestos son útiles como antivirales.Reivindicación 1: Un método de preparación del compuesto (1) representado por la fórmula estructural (1), o una de sus sales farmacéuticamente aceptables, que comprende: a) hacer reaccionar el compuesto de fórmula (A) con 3,3-dimetilbut-1-ino en presencia de uno o varios catalizadores de paladio seleccionados del grupo que consiste en Pd(PPh3)4 y Pd(PPh3)2Cl2 y uno o varios catalizadores de cobre seleccionados del grupo que consiste en CuI, CuBr y CuCl para generar el compuesto de fórmula (B); b) tratar el compuesto de fórmula (B) con un ácido para generar el compuesto de fórmula (C); c) reducir la ciclohexanona del compuesto de fórmula (C) en ciclohexanol para generar el compuesto de fórmula (D) ;y d) hacer reaccionar el compuesto de fórmula (D) con una base para generar el compuesto de fórmula (1).

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